BROKEN BENTLEY / ROLLS ROYCE 6 ¾ L-Series V8 Full Engine Teardown
Summary
TLDRThe 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
🚗 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.
👀 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.
⛽️ 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.
😱 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.
😩 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.
🔧 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.
⛓️ 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.
🛠 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.
😲 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.
❌ Even More Disassembly Challenges
Difficulties persist in disassembly, including accessing main caps and removing the crankshaft. The narrator proceeds methodically despite the challenges.
🔬 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.
🏁 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.
👍 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.
Mindmap
Keywords
💡Bentley engine
💡CIS
💡teardown
💡hydrolocked
💡Bentley
💡machining
💡oil
💡British engine
💡electronics
💡crankshaft
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
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