Rocker stud, nut locks.
Thread Starter
Melting Slicks
Joined: Dec 2004
Posts: 2,137
Likes: 5
From: Howard PA
Rocker stud, nut locks.
How do you properly lock these down? I'm talking about the nuts that have the allen screw inside to lock them down. We had one come loose on a 383 LT1 we built a while back.
For real I didn't lock them down and can't say for sure my buddy didn't forget to tighten one down fully. It WAS only one that was loose. Scary as hell though, it could have caused major catastophic engine failure.
For real I didn't lock them down and can't say for sure my buddy didn't forget to tighten one down fully. It WAS only one that was loose. Scary as hell though, it could have caused major catastophic engine failure.
Le Mans Master
Joined: Feb 2005
Posts: 5,146
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From: The Motor City
Originally Posted by ALLT4
How tight though? Is there a torque spec, generally?
Thread Starter
Melting Slicks
Joined: Dec 2004
Posts: 2,137
Likes: 5
From: Howard PA
Ehh, oh well, I just think he forgot to tighten that one anyway as it was the only one. Hopefully it doesn't happen again.
Personally I can't see how it would have come loose on its own, the little allen screw tightens down pretty good.
Personally I can't see how it would have come loose on its own, the little allen screw tightens down pretty good.
Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Originally Posted by ALLT4
Personally I can't see how it would have come loose on its own, the little allen screw tightens down pretty good.
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by STL94LT1
I either initially didn't get one tight or it came loose, and almost cost me an engine.
RACE ON!!!
Thread Starter
Melting Slicks
Joined: Dec 2004
Posts: 2,137
Likes: 5
From: Howard PA
Originally Posted by CFI-EFI
It is difficult to get a lot of force behind the Allen headed lock screw. After I have the outer, adjusting nut where I want it, I snug down the Allen lock screw. Then while I hold the lock screw snug against the stud, I back off on the adjusting nut a small amount, like a 1/16th or an 1/8th turn. Then I turn both wrenches, together, to reestablish my initial adjustment AND to jam the Allen screw tightly against the stud.
RACE ON!!!
RACE ON!!!
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Melting Slicks
Joined: Jun 1999
Posts: 2,872
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From: Wilmington NC
how did you adjust your rocker arms? did you tighten the nut until the pushrods did not spin? if so this is INCORRECT!
tells us the procedure you used and maybe this could be an answer.
Chris
tells us the procedure you used and maybe this could be an answer.
Chris
Thread Starter
Melting Slicks
Joined: Dec 2004
Posts: 2,137
Likes: 5
From: Howard PA
Originally Posted by lcvette
how did you adjust your rocker arms? did you tighten the nut until the pushrods did not spin? if so this is INCORRECT!
tells us the procedure you used and maybe this could be an answer.
Chris
tells us the procedure you used and maybe this could be an answer.
Chris
I'd never adjust rockers with that silly spin method. Even when we corrected the loose one the same method was used. Wiggle pushrod up and down 'till zero is found and then 1/2 turn.
