428 FE problem: hyd. lifter bleed down too quickly...

[go_sf]

am having a problem with the hyd. lifter bleeding down too quickly (next to distributor hole (last lifter to receive oil from the galley)), checked and have good oil flow to the lifter, check for correct bore diameter - good, bore is not tapered, have 40-50 lbs. oil pressure - drill on the pump, cam lobe is fine, swapped with lifter from a working lifter bore as well as replacing with a new lifter but the lifter still bleeds down really fast. mag'd the lifter bore and found no cracks.

any ideas why the lifter in that bore won't hold pressure?

[RICK LAKE]

go_sf Who's lifters are you running? I would tell you to go to the FE forum and ask the same question. I run crane anti pumpups without any problems. The only thing with them is if you pull the rocker shaft you have to remove all the lifter and get the oil out of the housings. If you don't the valves will stay open and not bleed down. Rick L.

[CWizard]

Originally Posted by RICK LAKE

....I run crane anti pumpups without any problems. The only thing with them is if you pull the rocker shaft you have to remove all the lifter and get the oil out of the housings. If you don't the valves will stay open and not bleed down. Rick L.

Hey Rick - Are you saying that once the pushrod is removed from these Crane lifters you have to get the oil out of the lifter housings? How do you do that? Disassemble the lifter?
Thanks!

[RICK LAKE]

CWizard The anti pumps will not bleed down in my motor when I pull the rocker shafts for the winter. I have a single plane Dove manifold and the holes in the castings where cleaning up before I assemblied the motor. I have just enought move to pull all the lifters without the manifold. A small magnet works great and a 12" long thin screwdriver is all I need to R&R lifters. You need a clean area rags. Remove the horseclip in the center MAKE SURE YOU HAVE A GRIP ON IT. Pull the guts apart and clean the oil out of the lifter and reassemble. No brakekleen, just remove the oil. You will have the play back in the plunger. Reinstall the same way you got it out. I have this down to 20 minutes. Make sure you don't damage the clip and it is seated right. The antipumps will not bleed down in my motor, it may work in other motors with less oil pressure. Mine starts at 130 psi and hot runs in the 70's psi. I setup the lifters with a .010" lifter plunger pushed in. If I miss a shift the valves are only stuck open .013" and will not hit anything in the motor like pistons This is my way and may not be the correct way to setup valve trains. Rick Lake