<VV> Head Torque - Valve Adjust

[Bob Gilbert]

Howdy,

On the engines I work on I carefuly use an impact wrench to tighten the 
stover nuts ( just hit the air as short of a  time as I can ) then use the 
impact wrench to take the stover nuts off. Usually I have no problem. I have 
a modified 13/16 socket ( ground the tapered entry to the hex flat )  that 
works way better than a stock socket.

Bob
----- Original Message ----- 
From: "Mel Francis" <mfrancis at wi.rr.com>
To: <jwcorvair at aol.com>
Cc: <virtualvairs at corvair.org>
Sent: Tuesday, August 21, 2012 1:03 PM
Subject: Re: <VV> Head Torque - Valve Adjust


> Great question, Joe.
>
> I've had the same problem, both with engines I've built and ones built by
> others.
>
> Recently, I've womdered if a long, thin steel, French lock plate with 
> tabs,
> running the length of the head,
> might help control this tendency.
>
> Do you think this might work?
>
> Mel Francis
> Monza SS replica
> Oconomowoc, WI
>
>
> ----- Original Message ----- 
> From: <jwcorvair at aol.com>
> To: <virtualvairs at corvair.org>
> Sent: Tuesday, August 21, 2012 1:48 PM
> Subject: <VV> Head Torque - Valve Adjust
>
>
>>
>> This past weekend I replaced the O-rings on my oil return tubes - tedious
>> job, but not difficult. When I removed the stover nuts securing the 
>> rocker
>> arms to the rocker studs, several of the studs unscrewed. Now, 
>> considering
>> that the rocker studs are the lower head bolts too, I am a little
>> concerned as to why the stover nuts would have enough torque to remove 
>> the
>> rocker studs.
>>
>> Is this a common occurance?
>> Were the rocker studs not torqued properly? (I used a "click" torque
>> wrench set to 35 lbs to retorque the rocker studs.)
>> Could this be heat related? (My exhaust is very close to the head - 
>> custom
>> exhaust.)
>>
>> Not trying to start a religious war, but I normally adjust my rocker nuts
>> while the engine is running. Now I am concerned about loosening the 
>> rocker
>> stud/head bolts when I make this adjustment.
>>
>> Any thoughts?
>>
>> Regards,
>> Joe White (62 Sedan, 66 Porvair, 64 Spyder Project)

>