How to adjust hydraulic lifters with engine off?
The ’74 Service Manual, to which I was referring, adjusts hydraulic lifters with the engine off. Do you think that has anything to do with why GM instructs a whole turn extra, while most everyone else suggests 1/4 to 1/2? Manual states, “…additional 1 turn to place the hydraulic lifter plunger in the center of its travel.” Thanks for your help!
Can you replace lifters in a Chevy V-8?
Replacing a set of lifters in an engine like the classic Chevy V-8 is one of those automotive rites of passage that every mechanic has to go through at least once. Lifter replacement isn’t particularly difficult from a technical perspective — but it does require unbolting large chunks of your engine…
How do I set preload on the intake lifter?
This puts the intake lifter on the base circle of the lobe so we can set the intake preload. With the intake preload set, now bump the engine until the intake valve is halfway closed (IC). Now you can set the preload on the exhaust. With the first cylinder finished, you can move to the adjacent cylinder and run through the process again.
Why does my hydraulic lifter have no preload?
If clearance exists between the pushrod and the seat in the hydraulic lifter, you will have no lifter preload. In this case the valve train will be noisy when the engine is running. All of the hydraulic force produced by the lifter will be exerted against the lifter’s retaining lock, and this could cause the lock to fail.
The ’74 Service Manual, to which I was referring, adjusts hydraulic lifters with the engine off. Do you think that has anything to do with why GM instructs a whole turn extra, while most everyone else suggests 1/4 to 1/2? Manual states, “…additional 1 turn to place the hydraulic lifter plunger in the center of its travel.” Thanks for your help!
What’s the procedure for a solid lifter adjustment?
The steps for solid lifter adjustment are similar to hydraulic lifter adjustments. However, instead of turning a wrench 1/8 to 1/2 turn we will be using a feeler gauge to verify the lash setting. First, warm the engine to operating temperature (about 15-minutes) and then quickly remove both of the valve covers.
How often should you tighten the valve on a lifter?
Tighten 1/8 to 1/4 turn (Depending on moon phase) This gives a total of 5/8 -3/4 of a turn after reaching zero lash. (I personally prefer 2/3.) A bit more than the 1/2 many people recommend but less than the full turn I’ve seen from GM. Well within the “safe zone” of the lifter travel, IMO. Cardinal was real close to getting it all right.
What are the signs of a faulty hydraulic lifter?
Signs of a Faulty Hydraulic Lifter. The most obvious symptom of a faulty hydraulic lifter is the noise it creates in your car’s engine. You can usually distinguish the faulty lifter by the distinct sound.