BROKEN BENTLEY / ROLLS ROYCE 6 ¾ L-Series V8 Full Engine Teardown

Summary

The narrator tears down a broken 1987 Bentley Mulsanne V8 engine obtained from a salvage yard. He details the unusual and antiquated features of the engine, including its CIS fuel injection system, gear-driven valvetrain, and lack of cam bearings. As he disassembles the engine on a difficult-to-use stand, he uncovers damage from apparent hydrolock as well as previous disassembly attempts. He removes each component, assessing wear and marveling at the intricate machining. After 8 grueling hours, he confirms his theory that the engine sucked in water, bent a connecting rod, and punched holes in the oil pan and block.

Takeaways

• 😲 The video details tearing down a broken 6.75L V8 Bentley engine from 1987
• 😎 The engine is very complex and tricky to disassemble due to tight spaces and odd fastener sizes
• 🧰 Many custom tools and creative problem-solving techniques are required during the process
• 🔨 There is damage from both the engine failure itself and from someone trying to get it apart
• 🔎 Upon inspection, it appears a piston hydrolocked against a counterweight, breaking a connecting rod
• ⚙️ The engine features some interesting old technology like a mechanical fuel injection system
• 🔧 Dissassembly takes 8 very challenging and frustrating hours
• 🤔 The presenter believes cheap oil and infrequent changes contributed to the failure
• 🛠 Despite difficulties, it's a rare chance to tear down an old English engine
• 😊 The presenter has great appreciation for the experience and learning opportunity

Q & A

What kind of engine is being taken apart in the video?

A 6.75 liter V8 engine from a 1987 Bentley Mulsanne S.

What fuel injection system does this engine use?

It uses a Constant Injection System (CIS) with a fuel distributor.

What caused the failure of this engine?

The engine seems to have been hydrolocked, likely from sucking in water, which bent a connecting rod and punched holes in the oil pan and engine block.

How much horsepower and torque did this engine produce originally?

Around 230 horsepower and 400 ft-lbs of torque.

What complications were encountered when mounting the engine on the stand?

Non-standard bolt sizes made it very difficult, taking over an hour just to mount the engine.

How long did the full teardown process take?

The full teardown took around 8 hours, much longer than normal.

What previous repair attempts were evident on the engine?

The cylinder head had been poorly resurfaced and there were saw marks where someone had cut the oil pan in half to aid disassembly.

What driven camshaft design is used in this engine?

It uses a gear driven camshaft rather than a belt or chain.

What are some unique or notable design elements of this engine?

The gear driven valvetrain, two-piece timing cover, use of cotter pins to secure internal components, and lack of camshaft bearings.

How many engines has the narrator torn down on this YouTube channel?

Over 170 engines across various types, brands and configurations.

Outlines

00:00

🚗 The Origin Story

The paragraph describes how the narrator got an offer from his friend Josh at a salvage yard to get a broken Bentley engine for his YouTube channel. Though unsure of the specifics, he agrees as he enjoys learning about engine construction and dysfunction.

05:03

👀 Initial Exploration of the Engine

The paragraph documents the narrator's first impressions of the engine upon receiving it. He notes the antiquated technology, damaged state, and unrecognizable parts. Mentions finding hardware in the intake ports and a plan to disassemble the engine to evaluate the issues.

10:04

⛽️ Removing the Fuel System

The narrator works on removing fuel system components like the cold start injector, fuel distributor, and lines. He provides background on the CIS fuel injection system and notes it will likely be sold for parts due to condition.

15:05

😱 Removing the First Cylinder Head

The narrator struggles greatly to remove the first cylinder head, needing to resort to hammering and prying. Upon removal, he finds significant sludge, varnish, and wear, but no obvious damage. The head gasket is blown.

20:06

😩 Continued Cylinder Head Removal Difficulties

Removal of the second cylinder head proves even more challenging, requiring further extreme measures. The narrator finds evidence of previous amateur work and damage. Further testing confirms failed head gasket.

25:07

🔧 Beginning Disassembly of the Short Block

With the heads removed, the narrator starts disassembling the short block. He removes external components like pulleys, covers, and brackets. An attempt to remove the damper fails.

30:09

⛓️ Valve Train Disassembly Struggles

The narrator works to remove valve train components. He highlights the gear driven system and lightweight cam gear. Difficulty arises in accessing the camshaft due to trapped components.

35:11

🛠 Making Progress on Short Block Disassembly

Steady progress is made on short block disassembly by removing lifters, camshaft, hardware, oil pump, and various brackets/covers. Damage becomes visible on components like the camshaft.

40:14

😲 Damage Discovery and Analysis

Removing the oil pans reveals catastrophic failure from hydrolock. The narrator analyzes the components and damage patterns to determine how the failure occurred at low RPM.

45:16

❌ Even More Disassembly Challenges

Difficulties persist in disassembly, including accessing main caps and removing the crankshaft. The narrator proceeds methodically despite the challenges.

50:18

🔬 Failure Analysis

With the components removed, the narrator closely analyzes the failure points. He confirms the hydrolock theory and notes the lack of RPM or combustion evidence on components.

55:19

🏁 Closing Thoughts on the Teardown

The narrator reflects on the uniqueness of the engine versus the many he's torn down. He thanks Josh for the opportunity and signs off after the long, challenging, but rewarding teardown.

00:19

👍 Parting Words

Final paragraph where the narrator reiterates his enjoyment of the teardown despite the difficulties. Mentions being able to source engine parts and provides contact details.

Keywords

💡Bentley engine

The main subject of the video is a 6.75L V8 engine from a 1987 Bentley Mulsanne S luxury sedan. This old British engine with antiquated technology represents an unusual and challenging teardown project for the host.

💡CIS

CIS or Constant Injection System is the fuel injection system used on this Bentley engine. It relies on air flow to determine the fuel amount, representing outdated technology no longer used today.

💡teardown

The core activity in the video is tearing down and disassembling this complex Bentley engine to examine its internal parts and determine why it failed.

💡hydrolocked

The host concludes the engine failure was caused by hydrolocking, which is when liquid enters the cylinder and cannot be compressed, leading to mechanical damage.

💡Bentley

Bentley is an iconic luxury automotive brand known for high-end sedan and coupes. This video examines an engine from one of their 1980s models, the Mulsanne S.

💡machining

The host frequently compliments the machining and construction of the Bentley engine components, despite the engine's flaws and failure.

💡oil

The oil system is examined in the video, including the condition of the oil pump, pickup, and passages. Oil quality issues likely contributed to the engine's demise.

💡British engine

As the host's first teardown of an authentic old British engine, this Bentley V8 poses unique challenges and learning opportunities through its unconventional designs.

💡electronics

The engine utilizes antiquated electronics by modern standards, including early mechanical fuel injection and spark systems, contrasting modern digital engine controls.

💡crankshaft

Removing the large and heavy crankshaft proves a considerable challenge. Its counterweights likely contacted a piston during the hydrolock event, directly causing engine failure.

Highlights

This is a 6.3L V8 from a 1987 Bentley Mulsanne S

The cam has a little bit of damage where it sits in the cam bearings and the lobes have some wear

The crankshaft doesn't look too bad although I banged it up a little pulling it out

The rod bearings aren't terrible but they aren't great either, one is delaminating

This rod is bent from its neighbor piston which did a catastrophe

The mark on the piston shows it likely hit the crank counterbalance when hydrolocked

I don't think this failure happened at high RPM under heavy load

The crosshatching in the cylinder walls is still visible but it had moisture sitting in it

There is a massive amount of damage to one cylinder bore

I think this engine sucked in water when hydrolocked and that's what caused the failure

The crank inertial mass punched holes in the oil pan and engine block

This is the most unique engine I've torn down compared to the 170+ others

This was an 8 hour tear down, one of the longest, but a fun challenge

I had constant 'oohs and aahs' seeing how this engine was machined and constructed

This was my first proper antique British engine tear down

Transcripts

a couple of months ago I was pushing

buttons on my computer machine at work

when I got a message from my buddy Josh

at norbs Auto Salvage buy from them

somewhat frequently he said hey do you

want a Bentley engine for your channel

and I don't know about you guys but my

head goes to yeah is it out of like a

continental is it out of a Rolls-Royce

something

awesome he's like it's out of some 8s

Bentley we've had it for a really long

time and it's broken so I think you'll

want it

well I do like broken engines I also

like learning how engines are

constructed whether they're super late

model or from the beginning of time so

we worked out a deal and now I have this

lump this is a 6 and 34 L V8 appears to

be a push rod engine out of a what I

assume from my research is a

1987 Bentley msan s it's a 230

horsepower about 400 foot-pound of

torque V8 that propels that land yacht

to 60 in a yawn inspiring 17 some OD

seconds it was the 80s got to remember

that and from looking at it uh at first

I don't even know what all these parts

are I know what they're trying to do but

I don't even know what they're called so

we're going to take this thing apart

we're going to see uh how bad it's

broken I can tell

you bad and uh hopefully we have some

fun in the process so uh let's just get

this out of the way this is something

called CIS or constant injection system

it's a fuel injection system where it

has a fuel distributor this plate which

uh is supposed to return a little faster

than that which dictates how much fuel

goes to the nozzles based on the air

flow going through the engine this is

the non-turbo version of this engine the

l

410i i this engine came out in the ' 50s

I think it ran to the late 2000s they

had turbos on them and they made a lot

more power like like 450 horsepower or

something but uh this is what I would

consider Antiquated technology you won't

find CIS systems on anything modern I

had a system like this on my 1983 320

and it was uh not the easiest thing to

figure out especially since it's before

my time there's other things going on

here uh this looks like a secondary air

injection tube

maybe I think and uh

it's got this weird Top Hat Thing on top

of the we're just going to take it apart

one thing I did notice as I was

unpacking

it it's hurt pretty bad um there's a

certain Door song that comes to mind but

not all of this damage was done from

whatever happened to this engine this

engine was probably locked up from this

explosion I think those holes in the pan

were from whatever happened from the

inside but there's also some saw marks

on it uh there's it's been looks like

it's been hammered on I think they had

to do some things to take it partially

apart so they could get the transmission

off to get all the torque converter

bolts out which by the way of all of the

engines I've ever had in this shop and

there's been a lot this was the worst

one I've ever dealt with to put on an

engine stand you'll notice that I'm

using my old my original engine stand

because I am unwilling to chop down the

arms on my nice one and I don't have any

bolts for this because these bolts are 9

mm diameter thread nines why could you

just make it an even 10 and then the

smaller ones are

sevens but why English that's why well

the first logical step is to turn it

over and it actually has a crankshaft

nut and it is a 34 mm I'm going to call

out some of the bolt sizes when I find

them ridiculous because when's the last

time you got got a chance to work on a

Bentley

engine

ah I hate the

stand okay so it moves about 6° not

even this is going to be a real fun one

let's pull the

plugs oh man when I pulled the first

spark plug out of this engine I was like

Champions this isn't a lawnmower and

then two cylinders later I literally

pulled a lawn War spark plug out it's

also a champion and I just uh I I've

torn down some engines in my day and i'

I've I've never I've never seen that not

not ever not once

I I mean it fit you got to give him some

credit I a man this

is this is not what I expected uh so the

the gap on some of these plugs is way

too small so that leads me to think that

uh we might find some malice in the

combustion Palace in this

engine the straps are kind of bent to

the side on a couple and then of course

there's our our uh used Champion

lawnmower I'm going to keep that I think

that fits mine and uh I also found like

a spider's nest in one it's clear engin

uh had some sort of life that I wish I

could see so I I know we need to start

taking some bolts out I don't really

know where to start because I mean look

at it but I did want to point something

interesting out this vehicle has a cold

start injector this is something that a

lot of Volkswagens and Audi's use uh

from the 80s and early 90s I guess

that's probably when it started to fade

away and they used them to inject extra

fuel it's a static injector does not

pulse it's just on or off a lot of Turbo

guys in the '90s and early 2000s used to

use these as an additional fuel source

you'd uh grab one of these drill a hole

in your charge piping before the

throttle body and then uh control it

with a Hobs pressure switch that you

stole off a soab turbo I know that's

kind of nostalgic for a few of you but I

think we're going to take this

contraption

off I I think I mean the bolts have to

be on the inside of this

right what's underneath this thing an

intake

Plum okay so I don't really know what

the proper order

is so we're just going to start taking

stuff

apart did that do anything for

me how does that even come off I think I

take it off

here I don't know if that was the move

I think that's the throttle

body all right well we're just going to

deal with that later so here are the

bolts inside that plenum if you look

closely I have to bend two little tangs

so that I can get the socket on them I

guess that's to keep them from backing

out and going down the

intake

I'm not really sure what the U on all

these bolts stands for if somebody knows

please put that in the

comments also seems like none of the

hardware has flanged nuts or

bolts that's where the carb goes next I

think we're going to start cracking some

of these fuel lines loose hopefully they

come right out I have

hope

I wonder though should I leave the lines

in no I don't even know if I can I feel

like if I ship it that way if I sell it

this is the only valuable part besides

the valve covers I think from this

engine I also have to find someone with

a msan

s it's going to be an easy

task

all right well these are almost all

loose I think I'm going to crack them

loose at their

nozzles yeah that's what we're going to

do hey it's

off that's some other type of injector I

think it looks like that's what that

is

oh we have some fuel in there

still whoa that's

bad I just need to be able to get that

loose and swung out of the

way

all of this is working against

me all right I think we're pretty close

to pulling the Cs unit out I think the

only thing holding it in is this rubber

piece I think this

is

a yeah that's what size it was so these

fuel Distributors this fuel system is

often called jetronic there's l jetronic

k jetronic and they were pretty common

in European cars in the early 80s late

7s all the way pretty much through the

the late 80s depending on what kind of

car it is and it has this fuel

distributor and I'm not going to take

this apart uh I'm not saying that I

couldn't put it back together but I

don't remember how bad that is but you

have a plunger here and air rushes past

this which has a fulcrum and pushes a

pin up in here and the pin has a slot

that gets bigger the further up it goes

letting more fuel out that's essentially

how it works there's all kinds of

different things for adjustment and um

the system is relatively reliable as

long as old gas doesn't sit in it like

what happened to this so this will

probably be sold as a builder's part

someone to take it apart clean it and

reseal it I think I can get these fuel

lines wait

wait yes all right we're almost ready to

start peeling the intake manifold off

but we have some weird stuff I don't

really know what this part does but it

needs to come

off at least this line

does oh it's tied into this thing crank

a vent I don't

know this is starting to smell very

poorly you know what this power steering

pump that's got to

leave eviction notice is now it also

weighs like 48 lbs and the brackets

loose is that I I can't even tell what

size the bolts are on this

engine those were a/2 inch next we're

going to remove this smog pump line air

injection Line This is a 3/4

in I guess we can pull the plug wires

off

now so my next move was to pull the

intake manifold we just got some bolts

here but there's this one bolt that's

blocked right here I thought okay maybe

I can get a wrench on that or maybe I'll

just remove this piece and this is

probably o-ringed

in and I just have to remove this off

the timing cover water pump housing but

then you've got this pipe here with a

backwards bolt and I don't know how to

get to that I'm just going to start

taking some bolts out and see what

happens I think this is what the manual

says you should

do look at all that

room and now the backwards bolt what do

I do

here

okay

uh mhm blue what happens when

I oh we have

movement the question is can I get this

out of the way

enough without breaking it oh wait I

think I can do something else there's

another bolt right

here I think I'm getting

somewhere

oh this bracket's in the way who

designed this and

why

what well that didn't help me I guess

we'll take this bracket

out you know what I think I can pull it

up with the intake now I don't think I

need to pull that bracket let's try that

so I have this Fancy Pants socket it's

not really

fancy this will work

we got this okay and now I think we can

zip the rest of these bolts

[Music]

out that sounded like all the bolts were

out yeah well these intake ports are

just

massive I don't really see any problems

in here and they're pretty clean you can

see that injector coming down that's

that right

there same deal on this

side looks like some Hardware made its

way down in there it's not a big

deal

all right now I'm going to remove the

valley cover I'm dying to know what's

behind

[Music]

this oh spring

loaded oh

neat I still don't know what these do

it's some sort of pump so each of those

things is a little pump it's driven off

the cam there's the lobe right there

that drives

it and there's the other lobe I'm not I

suppose that's

fuel I don't know what else it would be

but this is like old school di but it's

not because the uh injectors are not in

the combustion

chamber it's pretty

interesting and there's

these pretty simple

also if you're wondering I got a mess of

parts with this engine it was partially

disassembled when it got

here I don't know what I'm going to do

with it but I have it next I'm going to

take a minute and remove the exhaust

manifolds

okay it's time for the dipstick tube

it's going to be okay it's

English I don't know if that has any

bearing on it or not

but see it is finally time to peel a

valve cover off we've been at this for a

while now and now we can get a valve

cover off of

it what's it look like in there that's

incredibly simple this is a pretty

simple

design feel like I'm looking at a

tractor here I don't see anything

obviously wrong it's pretty varnished in

here but you have to remember in the 80s

and '90s the quality of oil is not what

it is

today although I have seen engines from

that era that look perfect inside so

maybe this wasn't

maintained now we're going to remove the

rocker arm and The Rocker shaft I think

these are

7/16 now we'll pull the push rods

out it's pretty interesting rocker

design these actually bolt to head bolts

I'll show you that in a

minute there's our push rods

they are there's a lot of varnish a lot

of sludge on them for what they are but

I don't see any

damage all this

looks about as what I'd expect for what

we've seen so far so the head bolts got

your Center

bolts and then outside bolts here and I

believe these are bolts here

too I think it's about that time that we

crack these loose and this is going to

be a ton of fun on this engine stand

that doesn't have brakes it'll be like

old times so this is going to be

interesting I have no idea what the

sequence is I don't know if it matters

I'm going to do my best and I can't use

an impact socket uh just because of the

proximity to the seat of the spring and

how small this is I need a thin wall

socket so I love everything about

this hopefully they're not that

tight they're not so

far these are also nuts and they're

going to get stuck in every

single trigger

Pole

[Music]

I don't think I missed any I also don't

know what it's going to take to get this

head up but I am going to get the pan

and do my best in case anything falls

out all right let's see if we can break

the

seal oh I think I'm breaking the seal

now oh caught a little bit of leakage

as are stud so it's going to be a little

harder to get the uh head

off that made no difference please

please

please it's laughing at me I mean I have

a

forklift I don't know if it knows

that I think you guys know that we are

leaking these washers are screwing me up

here man I am not only riding The

Struggle Bus I'm driving it I'm going to

remove all of these uh washers and see

if that helps

me it's no different it's not better

it's not

worse not the way I like to do it but

we're

moving all right I've resorted to

hammering soft

things will that help

us no

this side is Loose as a Goose that side

tight as some other animal that rhes

with

tight oh hey hey we're moving I've been

at this for like 15 minutes now just to

get the head

off

wow so I'm actually prying against the

head gasket surface which that doesn't

really bother me so

much I still don't like the way I have

to do this but this head has to come off

I mean that's just part of the

rules it's like stuck on one of the

studs in the center I

think I sure hope the other one's not

going to be like this too I guess we get

some penetrator to spray on it I don't

think that's going to help me right now

we're going to think about this a little

different we're going to hammer some

wood in places and it's going to be fine

I

think maybe not

there's only one way to find out

though I've never had to do this

before oh we're making progress not the

way I like it

all right guys I don't know how much

more I got to do on this thing

but I don't even think I'm moving it any

further looks like it's just coked oil

holding this thing in that'd be

insane I'm stronger than oil I guess now

I can do this

too

I don't know what I'm doing

anymore doub in

life it's going to pull really

hard didn't work come on cylinder head

release I'm back with some more

wood I don't understand I didn't want to

do this but got my little bar

it'll get things

out trying not to scar up the heads you

know you know all those Rolls-Royce

people are going to get mad at

me I really care about the block we know

that's broken I'm not sure what to do

here

guys I don't like destroying things but

I don't know how this head's going to

come

off

all right I don't think this is going to

work whatsoever

but well somebody's got some better

ideas actually look at that it's got a

wedge I should probably do it on the

other

side we get somewhere with this oh I

think I think we're

somewhere we are so impossibly

close

and that head stud

sucks all right I got it a little

warm see if that changes

anything whoo there whoo there whoo

there whoo

there I think we're getting somewhere

because I can

see

yes I I can hear

sizzling that was painful so painful and

it stinks remind me not to agree to do a

head job on one of these ate some

Japanese food earlier

so

uh at least I had some ammo see if we

can get this head gasket off I bet we

can it's no longer in the condition it

used to

be

I don't know if I can get this off

because of all the junk built up on the

bolts so that's what was keeping me from

getting a head

off

man I need something for this

heartburn so much

crud that's that's

rust and burnt oil

stuff

okay head gas gets

off does not appear to be damag any more

than I damaged it well first things

first we need to do our

test not

okay three out of four is not bad this

looks like a war zone in here

but that's not from uh that's not from

me those little marks on there I don't

think those are from me so if you look

that piston is straight and this one's a

little a little rotated in in the

bore cylinder walls don't look terrible

from what I can see we're going to we're

going to really clean this up quite a

bit cylinder head doesn't look

terrible this is the cylinder that uh uh

probably will have a little bit of valve

damage might be okay might have

survived I have no idea if these heads

are worth I don't know anything about

what the value of this this engine has

except for the valve covers and the uh

fuel distributor that's it finally we

can start on the other side

finally now this side looks a little

cleaner than the other side

so I got hope that maybe I won't fight

this so much here right this side is

definitely

cleaner I don't really see anything

wrong I don't see any piles of forbidden

glitter nothing's broken or bent that I

can tell yet next we'll cram these

rockers

off these push rods look a lot better

I'm going to get this crank case

ventilation piece off it'll be easier to

get the head bolts

out back to head

bolts

I think we're going to deal with the

same

problems oh man it feels like it where's

my big

Mallet I think we're going to be okay

with this one leaking I don't even care

anymore I've got pigm and floor cleaner

please please

please oh my that's what I needed well

if you notice this head gasket looks

different because someone's been in here

but it didn't

matter cuz that's that's it's got a

bloed head

gasket it's

bad

and the rest of this doesn't look very

good there's some Rust in that

cylinder we got one suspiciously clean

piston not in the vicinity of the one

that's uh you know blown let's go look

at that cylinder head so I don't know if

you can

tell but this was expertly

resurfaced this is for sure one of those

I know a guy that can do it

cheaper but it's only it's okay because

it's on a

Bentley and then if you

look that valve isn't seated it might be

bent but it's not seated the rest of

these appear to be

seated looks like they even used The

Whiz wheel in that combustion chamber I

don't understand people I mean okay

maybe this was the 80s or 90s when this

happened I still don't understand it was

even cheaper back then to have a head

resurfaced all right let's see if we can

get this head gasket off I am so happy

that head came off much easier that

would explain why that someone's been in

here yeah look at that right

there not good now it's time for our

test a perfect score now we can start on

the short block let's get this broken

crank

pulley

that wasn't terrible now will this come

off

okay do I need a puller for this please

tell me I don't need a p for

this nah we're

good I don't even know if I needed to do

that

blue Woody and blue what do you

know

on hang in

there watch

out I have no idea if this is going to

work I'm going to go with no but you

guys can

watch maybe you'll learn what not to

do it's literally laughing at me this is

not the way let's try this puller will

it work I don't know no that's why I

said

try doesn't appear to want to work let's

try

this there seems to be Parts falling off

of this is it important parts yes it's

important

parts

yeah it came right off of there

again

that's not supposed to

happen all right what happened we were

moving now we're not let's try this

again it doesn't seem to be too happy

right now let's uh get a breaker bar on

it hopefully it doesn't rotate the

puller like

that bad stuff's happening all right

we're going to have to reset well guys I

got really

lucky really lucky I literally just put

this on here and

pulled and it came

off that was not fun and I know what

you're were saying you should just use

the bolt holes use your puller with the

bolt holes well I would do that if uh

these weren't 7 by 75 or whatever size

this

is yeah not great well now that that

debacle is over let's start zipping some

more bolts

out

[Music]

I probably could use that

bolt and that

one well I'll save him for next time

look at this horse hockey the bolts were

R my face the whole

time there this bracket that's in the

way here wait a

minute H someone's been here before

well I have two more

13s this is one of the most bizarre

engines I've worked on in a long

time I think I've got all the bolts out

of

it it looks like it might have a

two-piece timing cover like it looks

like there's a seam right here which

seems like a very bad idea to me but

what do I know let's uh give it a little

thk

wow did not expect

that see inside of the timing cover it's

got this little overlap here with uh it

looks

like nothing keeps it from leaking I

don't see a seal or RTV I would wager

they're supposed to be let's see if we

can get the bottom one off

now

wow that's kind of cool this is uh

unexpected I did not expect to find a a

gear driven valve train but that's what

we have here this is a giant cam

gear and I bet that weighs a lot maybe

it's

aluminum there's no tensioner to

fail this is kind of cool I'm going to

unbolt this and we we'll see what

happens parts are

falling it's aluminum look at that piece

of equipment right

there that's uh that was unexpected it's

pretty neat

actually I kind of like it now it's time

to pull the

lifters nope those

staked they sure are this is going to be

fine it's going to be fine guys it's

fine Bend these clips with magic you

know what I I can probably slide these

lifters up and out without pulling these

out yeah flat taets will they all fit

out this way what do we

think yes no maybe

so so far so

good and they're out these are flat

taets there's a little bit a

wear they don't look

terrible I think we would see some

damage to the cam if we saw a damage to

one of

these all look pretty

good and they're

just pretty simple design because I

don't know how the distributor is driven

I'm just going to remove this little

pedestal

I do have the distributor but it just

wasn't

installed I don't know if this is going

to do anything or not I'm going to go

with

not just give it a little

tap does that come out on its

own hey that was the right call next

this cam plate oh all of those have

little Keepers too actually all of these

are like that this is going to take a

hot minute

okay let's see what

happens that's all that is so I have one

long bolt it came with the

hardware from this engine we're going to

use that to pull the cam shaft out hope

this is all it takes

it isn't all it takes missed the

lifter I don't think that's going to be

enough

though oh

no this just got a lot more complicated

so it appears that there's an access

panel back here for what I don't know

but uh it's going to be a lot of fun to

get to because the ring gear is trapped

in here and hopefully it doesn't get in

the way is I really don't want to pull

the engine back off the stand it's not

fun it's not a great time guys okay wish

me luck

here it's fine just don't look there so

there's a

gear oh that's for the that's the

distributor gear I can do

this oh please don't be

staked they don't look like they're

staked or chickened this just keeps

getting more funner and funner figured

I'd try a little light on the situation

here so you can see what I'm

doing all right there's

one I think I got it and I when I say

staked I mean there's just a piece

holding it that's Stak is a different

thing I know

that oh this is so fun this is one of

those things you do before you take

anything else apart uh let me get an

extension this is quarter drive this is

going to be

great how can I lock the cam up now that

nothing can stop the cam from turning

well I have some ideas this will do it

right see goes like that and stops it

right or will it go this way either way

I think we're

covered

I think we are in

luck now will this just fall right off

probably not let's see if we can get

this cam to knock that off of

there yeah and then will this come

out wow that's That's Heavy that's

brass that's kind of cool it'd be a cool

piece on the desk okay see this should

just come out nice and easy

can help it on the other side since I've

access through the

valley well the cam definitely has a

little bit of damage where it sits in

the cam

bearings lobes have a little bit of wear

as well they're not quite as peaky as

they used to

be they just looks like a tired old cam

shaft a six and 3/4

race cam I'm just kidding and this uh

distributor drive gear is some pretty

nice machine work on this engine I must

admit and it looks like this engine

doesn't use cam bearings at least not

there or anywhere else so if it trashes

this um I guess you you drill it out and

you put a bearing in its

place they don't look terribly

worn it's pretty interesting design

though

next we're going to see if there's any

residuals in the oil pan before I roll

it

over empty that's what I like to see

well now I'm going to roll this thing

over this is the part I've been

dreading since I had it on the stand I

just I don't I'm not looking forward to

this hopefully I've taken enough weight

off of this to uh make it not so

terrible please don't be terrible

oh we're leaking I don't I I'm pan lless

whatever I got enough pigm

here oh it's leaking all kinds of stuff

well it looks like someone shot a couple

rods through the pan Which um it's

probably what happened here it also

looks like someone tried to saw this

thing in half it actually looks like

there's only one bolt holding it

together there's only one bolt holding

it together so this is a one piece pan

converted to a two-piece

pan look at those Exit

Wounds and this is thick steel this is

from the 80s that 80s British steel and

what do we have in here oh oh there's

some damage let's pull the second oil

pan off of

this

[Music]

M it's not quite the party platter I

hope for but we still got some stuff

well um it looks like there's damage

from both the engine itself and what

someone did to

it that's a a spectacle there this right

here stay in one spotl this is from

using an air ch with a non-turn collet I

think I don't think that's something the

engine did to itself and that is a piece

of

block and uh the Picasso in there that's

the engine's

doing what is

this I can't tell what that is but

there's another piece right

here well I think that eliminates the

fact that that's rod bearing that's not

it's probably pan gasket and someone

definitely cut this thing in half

probably to get this to turn over so

they could get the torque

converter what a terrible job that was

they had a bad day the inside of the

crane case isn't quite as chaotic as you

would

expect I have a feeling that some of

this was done not by the engine itself

but by whoever tried to get this thing

unstuck and I can tell you that this one

is loose that's just fingertight this

hole is massive and it was probably made

so that they could get access to both of

these I mean when the engine's broken

the engine's broken you can't really

help it if you want to sell the

transmission now I have no idea who is

putting a transmission in a 1987 msan

but if you want to sell it you got to

have it

out pickup isn't full of

debris I think at this point it is time

to pull the oil pump off this engine

it's right here and uh we'll see how

that

goes thank God those weren't cap

captured there's something else holding

this in let's get blue on this

job I'm I'm ruining it which is okay

with

me selling an oil line out of a engine

that's blown up like this is not really

on my list of uh achievements that I'd

like to to do in my

life well that's ruined now

jeez yeah

has some stuck in some doels you know

we're going to take this apart it's old

technology I want to see if there's a

Paddle Wheel in

here I don't know if I'll be able to get

either of these out oh that one comes

out oh

cool those are pretty neat

pieces this one's going to

require some some time that I'm not

going to spend I could take that uh

looks like a cotter pin get that off

but let's get this sprayed down and see

if we can see any damage well there is

somewhere at the

edge of this

rotor I don't know if that's normal this

is the you know this is the very first

one of these I've

ever torn down but that definitely looks

like some wear to me the rest of it

looks pretty decent little bit of wear

on that and I can't really tell what

this looks like but I would wager it's

similar to these two pieces

here kind of neat pieces and more

captured stuff it looks like it's my

favorite can I use this to turn the

crank nope I can use it to turn the

motor just not the crank I I got to

start at the front it's like my thing

you know hygiene but uh I am going to

start with what I have access

to and that's just how it's going to

have to be I don't see any other way

suppose we're going to start with these

two cylinders here if I can get on yes I

can these are 12 point half inch I'm

just kidding they're

[Applause]

13s

I'm not sure I can get these out this

way I might have to do this with all of

them although I don't know if I can do

that that way let's see if we can tap

them

out

yeah look at them

suckers

gigantic see if we can get

this oh

yes wait a minute something's wrong here

I think this is the one that blew

up hey look at that that's what did all

the

damage I know I might ruin

it well that part is inside the broken

side

so that doesn't want to go anywhere so

we're going to come back to that we're

going to go to something else we can get

out now this may not work because the

studs at the rod cap bolts

to might hit the

block or the

crank it does can I have my glove

back yes so that does not work uh let me

get my big bar and let's see if we can

turn this thing over first let's try

this I don't really want to pry against

the meeting surface of the oil

pan also I suppose I should put the bolt

back in it and by bolt I mean pin of

course pin I wouldn't do this with a

bolt okay well it bent my long punch but

it's okay we can just do it the other

way and get it back straight see you can

never tell if this doesn't do it it

should have H that didn't do

it there we go we moved it a little bit

can almost get that one

out ah yes I think I can get that one

out my hope is that the more I remove

the easier this gets to turn

over oh that's full of fluid I think I

can get this one off now oh

yeah

now I have no idea what uh I want to do

oh look at that oh

yes that is

stupendous okay we'll get uh this one

and these two that's

it

[Applause]

uh-oh we have problems the bolt is

spinning because it popped out of the uh

pumped out of the

rod there we're back in

Biz okay let's get these main cap bolts

out will you shut up fitting it's

actually not the fitting it's the Air

Line itself need to replace

it

okay so to get these out I just need

to I have no idea if that's doing

anything how are you supposed to get

these out they're not threaded so you

can't use a uh Slide Hammer maybe you're

supposed to use blue I don't

know yeah that seems reasonable

yeah that's what you're supposed to

do that wasn't too bad now the next

question can I lift the crank out of

it okay it's heavy

this is going to be a problem this is

going to be a problem it's all going to

be

fine this is good for

it I think every step of this engine has

been a

[Music]

challenge

well the crank's

out

ah ah yeah all right now I'm going to

use my brass drift I'm going to get this

thing

out well let's start with the rod

bearings they're not

terrible they're not great either

that one's

delaminating there's definitely been

some uh low quality oil I would say low

quality oil as well as extended oil

change intervals for time these cars

typically don't get a bunch of miles on

them and I'm not going to say that's

because they don't run long enough for

that to happen but you can say that and

let's get to what's broken so rods and

pistons they are

massive

they don't look great this one has a

bunch of damage and that's from its

neighbor which did a

catastrophe that Rod is

bent and there's the short end of the

rod and this is very telling this is

this is going to tell us exactly what

happened here

because see that Mark right there on the

bottom of the

Piston I would bet money real money like

10 cents or so that the bottom of this

piston made contact with counterbalance

of the crankshaft because it compressed

a liquid now whether that was fuel

whether that was coolant or whether that

was water uh that's anybody's guess at

this point but this engine was

hydrolocked and it broke a rod I think

it happened at a relatively low RPM but

if you think about the rotational mass

of all of this the size of that Crank

that can do some major damage especially

on a cast block like it is so that's the

damage there

the rest of the rods and pistons don't

look too bad they're full floaters

interesting interesting uh piston design

they're very

heavy not a ton of uh skirt wear Okay I

lied there's some skirt

wear not not on all of

them some of them are worse than

others

these I have no idea if anybody would

ever buy these unless you wanted one for

your desk in which case everything out

of this engine's available uh I don't

think anyone that actually owns one of

these old cars needs parts or maybe they

need all the parts who knows and if you

own one of these cars and you need parts

for it well I'm

sorry now let's go to the

crankshaft so the crankshaft doesn't

look too too terrible although I did

kind of bang it up a little bit pulling

it out I'm not going to lie wasn't the

nicest to it I don't know that this has

any value whatsoever but let's see if we

can find marks on the counterbalance let

me uh turn this crank over well this is

the area that would have struck it and I

don't really see a whole

lot of marks on

here which is kind of

surprising but I think the crankshaft

did make that Mark or maybe it was at

the neighbor I don't think it was the

neighbor Rod it was it was definitely

the crankshaft that would have done

that it makes the rod shorter and the

clearance between these counterbalances

and the base of the Piston I'll grab the

Piston take a look at

that see it would have been this this

this direction

here yeah maybe

uh maybe it it didn't it didn't even hit

it that hard but it was enough to break

the rod I think this happened at low RPM

I don't think this was a high RPM

failure pain bearings aren't super

bad that one's starting to come

apart not awful the inside of the

block there's a massive damage to that

boore and and again I don't think all of

this these holes all of this missing

block was from uh what occurred to this

engine I think most of this was actually

from someone trying to get the crank to

turn because with that short Rod bent at

an angle I'm sure it did

not the rest of this looks pretty decent

I'm going to roll this over and we'll

take a look at those BS well the

cross-hatching is very visible

still and it definitely had some

moisture sitting in it you know this

engine I think it sat on the shelf for

many many many years before Josh thought

it was a great idea for me to have it on

the channel I

agree I think this was

fun everything looks pretty solid here

not a lot of work needed to fix this

except for you know the gaping holes in

it here's a better look at the damage at

the

bottom it's pretty

bad the rest of the boards look really

quite

nice

what's interesting too is see there's a

little bit of material missing right

there not on accidents by

Design look like liners

actually there's only one thing left to

do see if the shoe

fits I and there's something about

Cinderella in this I'm not talking about

a glove I'm talking about a

shoe look at look at that it's almost

perfect yeah I don't think this engine

turn I think we can probably count the

number of revolutions this crankshaft

turned after the rod snapped I would say

this is probably two or three hits

that's one and then the one or two in

the block this shut down really quickly

I've torn down 170 something engines

over the last 3 years on this channel

which is a staggering statistic and it

blows my mind but we've covered a lot of

bases we've had gasoline engines we had

diesel engines medium duty diesel engine

a caterpillar did a v twin out of a

motorcycle a three-cylinder lots of four

cylinders six-cylinders 8 cylinders

we've done several v10s a V12 a rotary

we' had push rod engines overhead cam

engines direct injected Port injected

dual injected carburated small block

Chevrolet turbocharged supercharged twin

turbocharged we've had engines from

every single continent that produces

cars and if you average those all

together and you formulate the normal

engine that we would find on my stand

every Saturday night this is the

furthest departure from normal that I

can remember it is also the first proper

English engine that I've torn down yes

I've done Jaguars and I've done Rover

engines but those are Ford engines this

was a real British

engine and I had a great time this was

so much fun so many oo and Oz inside my

brain when Parts came off to see how it

went together the Machining was

interesting the tooling was unique this

was a I had such a great time it also

took 8 hours this was an 8 Hour tear

down most of my tear Downs are between 3

and 4 hours I am tired my back hurts my

brain hurts my 11 mm socket hurts this

took a lot it took an hour just to get

this engine on the stand there was a lot

that was an ordeal but I had a great

time regardless and I I owe Josh a huge

thank you for even the suggestion

because this is not an engine I would

normally have on my radar but the fact

it was offered to me put it there and we

all have Josh to thank for that now this

engine I think uh sucked in water I

don't think it was fuel because fuel

typically would clean a piston same with

hot coolant but cold standing water

won't and it also still doesn't compress

I think it compressed that Rod it broke

the rod and if you think about that 75lb

crankshaft plus eight rods and pistons

which are not light and the valve train

under power it takes a lot for that to

stop I don't think it was at high RPM

under heavy load or anything but that's

still a lot of inertia and it punched

several holes in the pan in the block it

did a lot of damage for a relatively low

RPM that's just the way I see this

failure

regardless this has a lot of really cool

parts so if you want any of the parts

out of this engine or anything else I've

torn down you can go to import apart.com

or you can email us I'll put our email

in the video description or if you want

Parts off of another Miata yeah I know I

buy Miatas okay gosh anyway I hope you

enjoyed this tear down I'm ready to go

home and get some sleep as always I love

all the comments all the feedback and

even the criticism I love it all and

I'll catch you on the next one one