<VV> Head Torque - Valve Adjust

[Mel Francis]

Seth, this happened on our impeccably clean, fresh-rebuilt engine from Dave 
Clemens.

Not a loosening of the entire stud, but a loosening of the rocker studs when 
backing off the rocker nuts during a valve adjustment.
Initially, I put it down to wear and polishing of the stud/rocker stud 
thread interfaces over time.

I don't fault Dave, I just think some form of locking device would go a long 
way to holding rocker stud torque,
while we do adjustments to the valve train. BTW, I adjust lifters cold.....

Mel Francis
Monzqa SS replica
Oconomowoc, WI


----- Original Message ----- 
From: <Sethracer at aol.com>
To: <jwcorvair at aol.com>; <virtualvairs at corvair.org>
Sent: Tuesday, August 21, 2012 2:06 PM
Subject: Re: <VV> Head Torque - Valve Adjust


> In a message dated 8/21/2012 11:49:08 A.M. Pacific Daylight Time,
> jwcorvair at aol.com writes:
>
> Any  thoughts?
>
> Regards,
> Joe White
>
> Some thoughts. The upper studs/nuts are exposed to the elements and  they
> often rust on. And it is visible. People take pains during removal, 
> cleaning
> threads, penetrating oil, etc. The lower studs are better protected,  with
> the thread interface being blind on top. But enough liquid or corrosive
> material can get up on the back side of the head, and down the passageway 
> to
> the  back side of the lower stud. And they are, until removed, invisible 
> to
> the  mechanic. There is probably no easy way to get penetrant in there 
> before
> removal. I would remove the rocker stud and (with loctite) re-install the
> stud, after making sure the threads - both sets - are clean. - Seth 
> Emerson
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