Preload issue, need educated opinion
Preload issue, need educated opinion When I orignally put my motor together, I did not check the preload, so yesterday I pulled the valve cover off and used a dial-indicator to check it.
I am coming up with .050. I am using 7.400" CompCams PR. I know the range is .050 to .100 and if I go to the next size PR is 7.450". That would put me at .100 and probably quiet the valvetrain down.
I would rather split the difference and go with a PR that is in the 4.430" range, but that does not seam to be an option.
My lifters are CompCams OE ProMagnum, Rockers are Jessel 1.7 and the cam is a CompCams 232/234 .595/.598 LSA 112.
Should I leave it alone, or get the longer PR?
I am coming up with .050. I am using 7.400" CompCams PR. I know the range is .050 to .100 and if I go to the next size PR is 7.450". That would put me at .100 and probably quiet the valvetrain down.
I would rather split the difference and go with a PR that is in the 4.430" range, but that does not seam to be an option.
My lifters are CompCams OE ProMagnum, Rockers are Jessel 1.7 and the cam is a CompCams 232/234 .595/.598 LSA 112.
Should I leave it alone, or get the longer PR?
You could try it and see how noisy it is. Or, you could use the 7.425" Comp pushrods.
From Thunder Racing web site:
63-7796-16 Comp Cams Hi-Tech One-Piece Chromemoly pushrods, 7.425" (.025" Long LS1,-2,-6, Gen III)
From Thunder Racing web site:
63-7796-16 Comp Cams Hi-Tech One-Piece Chromemoly pushrods, 7.425" (.025" Long LS1,-2,-6, Gen III)
I checked it cold, lifter pressure bled off.
Originally Posted by Ping King
you are checking this when the motor is hot..correct?
i usually run preload a little on the softer side.
if this is when the motor is hot, then i think you should still be ok.
i usually run preload a little on the softer side.
if this is when the motor is hot, then i think you should still be ok.
