Oil Pressure Help

[Gaz64]

Originally Posted by Gaz64

Your pressure is not that bad to worry about.

Your pressure is pump volume minus all the internal "leaks", the pressure is lower all at rpms now because the bearing clearances are slightly larger.

It was probably on the tight side of clearance when it was built.

Pressure without flow is more than likely to fail than higher flow from lower pressure.

10000 miles in 10 years, how many oil changes has it had?

Your bearings could be wearing out chemically from acid in the oil.

Originally Posted by Guy Johnson

I removed the valve covers and Found one of the push rods not even close the the rocker arm.


I am not sure how to remove the rocker arm. Here is a picture.

Star style nut with an allen screw. What is the procedure on how to unlock these?

Guy,

Loosen the 12 point locknut, wind out the setscrew/pushrod cup seat to set valve lash, lock the locknut.

The amount of "screw" out of the nuts are different for what I can see in the photo.
This tells me your adjustment procedure/preload is not the same for all valves.

Can you also give some info to my questions, and why you believe a roller lifter has failed.

[Guy Johnson]

Originally Posted by Gaz64

Guy,

Loosen the 12 point locknut, wind out the setscrew/pushrod cup seat to set valve lash, lock the locknut.

The amount of "screw" out of the nuts are different for what I can see in the photo.
This tells me your adjustment procedure/preload is not the same for all valves.

Can you also give some info to my questions, and why you believe a roller lifter has failed.

I can stick two fingers between the pushrod and the back of the roller rocker arm set screw.Second the engine did this 9,000 miles ago.

Does that allen screw need to turn Clockwise or counter? Because the allen head is on really hard.

I run solid roller lifters.

[Gaz64]

Originally Posted by Guy Johnson

I can stick two fingers between the pushrod and the back of the roller rocker arm set screw.Second the engine did this 9,000 miles ago.

Does that allen screw need to turn Clockwise or counter? Because the allen head is on really hard.

I run solid roller lifters.

Guy,

Although we can't see it in the photo, I'll assume it is the middle pushrod in the photo that you are talking about.

I would be pulling the intake off, then pulling the lifters and cam out.

If you have had a roller lifter self-destruct, shrapnel will be in the sump.

You say it did this 9000 miles ago, did you replace the cam as well or only the lifter? Who set the valve lash? Does it have adequate valve to piston clearance? Plus all the other clearance checks around the valvetrain?

The locknut holds the setscrew, like the majority of shaft mounted adjustable valvetrains.