C:Shim up the shafts to .000-.010 or use adj. rockers (adj pushrods are JUNK imho)Originally posted by J Banning
Thanks for the info Bill. I'm headed to the garage here in a few minutes to test the car out after the work I did on the grounds.
What you said about Comp Cams lifters not liking much preload is interesting. I did a search and found a couple other people saying the same thing. What do you recommend for preload? How much less than .030?
Thanks,
-Banning.
P.S. I'm interesting in seeing the new toy of yours at Cecil. You put a 3.8 in that Banshee?
I wouldn't assume anything. Did you check preload?Originally posted by bob86gn
Seeing as the drivers side is quiet I assume it is not a psuhrod length issue.
Any thoughts?
Originally posted by J Banning
1) What can I use as shims?
2) Do I need to check EVERY pushrod, or is it safe to test a couple and then apply the same shim to every one?
3) Is there any chance that I'd be reducing the integrity of the rocker shaft and/or bolts by using shims? I plan to take the motor to 5600-5700 RPM.
4) Should I still use the recommended torque specs on the rocker shaft bolts?
Thanks,
-Banning.
You just place the shims under the shaft at the mounting points where the bolts go.Originally posted by bob86gn
I am not sure what you are going to shim? Are you going to shim the rocker shaft off of the pedestals?
Also, I have to relieve one of my pedestals since it is rubbing on the exhaust of #2.
Originally posted by J Banning
Preliminary results show that...
1) I had stock length pushrods in the motor.
2) My lifter preload was between .050 - .060.
Since the Comp Cams lifters are supposed to have little to no preload, perhaps this is the cause of my 5000+ RPM stutter (valve float)? I'm headed out now to see if I can find any metal stock to use as shims. Will post results later tonight.
-Banning.
Originally posted by EightSecV6
Glad to see things are working out, once you get the preload right (.000-.010) they will make more power than the cheapies as they stay pumped up at the top of the RPM range.
Bill