fritztod
Member
Wrong lifters that are leaking by?
Are you sure that you got all of them???
What about the two that go behind the camshaft thrust plate???
What were the bearing tolerances you measured when you built it?
What kind of cam and lifters are you running? High lift and certain lifters can expose the oil gallery, bleeding pressure.
Wrong lifters that are leaking by?
Even the plug on the drivers side inside from the rear? I missed that one before.i put all the block plugs in when assembling it
Do you still get 50 psi with a drill when priming and 25 when engine running, I am suspecting your distributor drive is damaged or broken.hello everyone, i rebuilt a 318 la back in may , all new bearings and rings, cam, etc, it never gets past 25psi at 4k-5krpms, less than 10 at idle , its got a brand new oil pick up, ive changed the pump 3 times, the 3rd one i put a mopar performance spring in it, i run valvoline vr1 20-50
its always read 50psi with a drill when priming and im assuming 700 rpms with restistance when pump gets oil, ive tried 2 different guages, ive tried both guages on my 75 d100 ( also a 318 la) and both read 50 psi
any advice will be appreciated thank you
Do you still get 50 psi with a drill when priming and 25 when engine running, I am suspecting your distributor drive is damaged or broken.
Even the plug on the drivers side inside from the rear? I missed that one before.
Did you use the same gauge priming as you are in the car?
Make sure the line to the gauge somehow didn't get kinked.yes same gauge along with another gauge i tried
Not the drive gear, but the hex that engages the pump. They can round off.yes 50 with drill, 25 max with engine running, drive gear isnt broken or anything
RIGHT! Also, nine times outta ten, when the hex on the intermediate shaft rounds off, the female hex in the pump is damaged, too.Not the drive gear, but the hex that engages the pump. They can round off.
Its the only thing that fits what he is saying. Normal pressure when priming. Inadequate with engine running. How can it be anything else but a slipping rounded off hex. If it's not that then I'm gonna learn something here lol.RIGHT! Also, nine times outta ten, when the hex on the intermediate shaft rounds off, the female hex in the pump is damaged, too.
Its the only thing that fits what he is saying. Normal pressure when priming. Inadequate with engine running. How can it be anything else but a slipping rounded off hex. If it's not that then I'm gonna learn something here lol.
Ok but do you think it would be 25 pounds less? That seems excessive to me.Depending on aftermarket grooves in cams journals and bearings, when engine isn’t running, oil isn’t supplied to the top end, giving you higher pressure when priming. Also, when priming the engine would always be colder.
THAT's a name I haven't heard in a few years..... my son trades parts with Ken's son Nick, once in a while.The first engine that I built had low oil pressure... Everyone kept telling me it was the bearings because the oil pump drive gear didn't mesh well and we started it and ran it for a few minutes with low oil pressure.... I didn't buy that short of run time could wipe out new bearings that fast and I was right...
I went to Ken Neve the founder of Mopar Muscle club in Chicago and he gave me the best advice to solve the problem:
Put the engine on the stand and prime the pump... Tear it down a little at a time until you see oil gushing - that will be where the problem is...
Remove the intake, timing chain cover, and oil pan and look for oil gushing out....
That's how I fixed the problem with my engine...
THAT's a name I haven't heard in a few years..... my son trades parts with Ken's son Nick, once in a while.
hex is not rounded off on mineNot the drive gear, but the hex that engages the pump. They can round off.