Assembling a Ford V-8 351C Engine: EVERYTHING you need to know

Summary

The video shows the process of rebuilding a Ford Mustang engine from start to finish. It covers disassembling the original engine, inspecting and cleaning the engine parts, machining and modifying components like the crankshaft and cylinder heads, reassembling the engine with upgrades like a roller camshaft and high performance valve springs, test fitting and adjusting parts like pushrods, priming the oiling system, installing accessories like headers, and finally test firing the newly built engine on an engine stand.

Takeaways

• 😀 Measure and verify clearances between engine components to ensure proper assembly.
• 🔧 Use proper tools like a spring tester to validate parts meet specifications.
• ⚙️ Degree the camshaft to manufacturer recommendations for optimal valve timing.
• 🔧 Dial indicators and degree wheels precisely set timing and clearances.
• ⚒️ File piston rings to the bore clearance recommended for proper sealing.
• ⚙️ Adjustable pushrods dial in valvetrain geometry with different components.
• 🔧 Check piston to valve clearances to avoid catastrophic contact.
• 🛢️ Priming the oiling system verifies flow before initial startup.
• 🧰 Header gaskets require quality parts to avoid leaks.
• 😀 Breaking in a roller camshaft requires less stringent procedures than flat tappet.

Q & A

What process is used to clean the engine block threads?

The threads are chased with a thread chaser tool to clean out any particles or rust that may be present.

Why are the ends of the piston ring seal not aligned with the piston cap?

The ends are offset by about 1/4 inch so the seams don't line up, making it less likely to leak.

What is the purpose of painting the lifter valley?

The glyptal paint seals off the pores in the cast iron to improve oil flow back to the oil pan.

How is the piston ring gap measured?

The ring is placed in the cylinder bore and a feeler gauge is used to measure the end gap when the ring is squared in the bore.

Why are lighter valve springs used during mock up?

The lighter springs prevent the hydraulic lifters from compressing without oil pressure to allow the valve train to be actuated.

How is zero lash set on hydraulic lifters?

The lifter is preloaded slightly by rotating the rocker nut a quarter to half turn past zero lash.

How does the oiling system lubricate the valve train?

Oil travels up push rod tubes to rockers, then down to lubricate the roller tip, valve stem, and spring.

Why are headers removed after installation?

It's impossible to install the engine and headers fully assembled, so headers are removed and reinstalled in the car.

What is done to break in a roller camshaft?

Roller cams only need to be run for about 10-20 minutes with some heat cycles for break in.

How are leaks in the exhaust diagnosed?

A mechanics stethoscope can be used to listen for leaks at the header gaskets.