Adjusting my valves...again...can't stop the ticking!

[Anonymous]

I have followed directions from Mike (http://cquesttechnologies.com/fspp/ValveAdjust.asp) on adjusting the full roller rockers, but I can't seem to get them right. I've still got a ticking in there. I backed them all off last night and started again (the engine was plenty warmed up).

Should I be spinnig the PR until i can no longer spin it with a fair amount of force or just light pressure? Is there a better and/or more precise way to do this for a shadetree mechanic like me? Once "locked" in? should the rocker head jiggle at all by hand (motor not running) and if it does jiggle, do I just tighten it a bit more until it stops?

I can't determine exactly which rocker(s) is/are ticking. Is there an old-guy's trick to it like "press here and see if it stops..." kinda thing?

Thanks as always gents!

 

[MustangSix]

You have hydraulics, correct? Old mechanics tip coming up:

First turn the engine until the valve is closed completely and the lifter is on the cam base circle. Then tighten the lifter until the PR just stops spinning. Do this on all the valves.

Second, (this could get messy, so get some rags). Set the VC on the engine but not bolted down, start the engine and warm it up to operating temps.

Next, remove the VC. Now start the engine. Look for oil on all the rockers. Then start with #1 and loosen the first rocker until it startes to clack. Now tighten until it just stops and turn it 1/2 turn more. Repeat for all of them. It is a PITA to get a wrench on a moving rocker, but this technique will definitly get the clatter out IF IT IS LASH RELATED. If the valve clatter is due to a collapsed lifter, a worn cam lobe, or a bad rocker, this won't help.

 

[Anonymous]

Thanks Jack. I KNOW it's a PITA getting on the moving rockers! That's the last step I need to try as I've done your first suggestions to a "T".

The cam is BRAND new (like 200 miles on it), the rockers and lifters are very new as well (few thousand on them at most).

 

[80broncoman]

Roller rockers can make more noise than standard rockers. They have much less contact area at the valve, and since they have less friction they have less contact at the pivot also. They flex less don't dampen harmonics as well as stock arms.