Polylock Torque Spec.
Thread Starter
Race Director
Joined: Jul 2004
Posts: 12,672
Likes: 329
From: Scottsdale Arizona
Polylock Torque Spec.
Does anyone know the torque spec for the locking Allen screw on the polylocks for Comp Cams roller rockers?
Hand tight with a 3 inch Allen key? Breaker bar with moderate force? Impact wrench set on kill?
Presumably closer to the first guess?
Hand tight with a 3 inch Allen key? Breaker bar with moderate force? Impact wrench set on kill?
Presumably closer to the first guess?
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
This was taught to me buy a NHRA national record holding machine shop owner: Set the allen lock set-screw, and turn the poly lock hex into the stud about 1/8-1/3 of a turn to "lock" the poly locks into place. Be careful with this method, you can overdo it and the next time you try to back them off, you'll pull the studs out of the cylinder head. I used to have trouble with my valve lash holding but, I never have after adopting this system.
