Wietse
Well-Known Member
Hey guys,
As i had rocker shafts removed i decided it was a good idea to redo the hydraulic lifter pre-load after reinstalling the shafts.
I noticed that some of the lifters do not feel quite as solid as the others.
After setting zero lash with the adjustment screw on the rocker i give it a full turn on the screw as pre-load, though most of them are "tight" and actually open the valve, but after a minute or so the valve is closed already and the lifter has bled off, the push rod can then be twisted by 2 fingers. (still can feel resistance, not sloppy or so)
I found a few lifters that will bleed off straight away and therefore do not feel as "tight", the valve does not get off the seat.
Does that mean those lifters are getting worn out and bleed off faster then the others?
Would that give any issues? I guess that during engine operation they are always full of oil and pressurized and do their job as any other lifter.
Just wondering if it is time for a new set of lifters now.
Oil pressure is 50-60 psi with 20W50 oil, 440 HP engine.
Anyone has some thoughts about this?
As i had rocker shafts removed i decided it was a good idea to redo the hydraulic lifter pre-load after reinstalling the shafts.
I noticed that some of the lifters do not feel quite as solid as the others.
After setting zero lash with the adjustment screw on the rocker i give it a full turn on the screw as pre-load, though most of them are "tight" and actually open the valve, but after a minute or so the valve is closed already and the lifter has bled off, the push rod can then be twisted by 2 fingers. (still can feel resistance, not sloppy or so)
I found a few lifters that will bleed off straight away and therefore do not feel as "tight", the valve does not get off the seat.
Does that mean those lifters are getting worn out and bleed off faster then the others?
Would that give any issues? I guess that during engine operation they are always full of oil and pressurized and do their job as any other lifter.
Just wondering if it is time for a new set of lifters now.
Oil pressure is 50-60 psi with 20W50 oil, 440 HP engine.
Anyone has some thoughts about this?