Thanks Bob. Seems to me the hardened washer is a good idea. The blue
Loctite might be good too. It appears the reason I had to replace the head
gasket was loose bolts. I think air compressor head bolts are a neglected
item in my garage. When's the last time you re-torqued yours? ;-)
The page on torque setting is a 'keeper'. One thing that concerns me with
the torque spec is the material that the head bolts are in is aluminum. I
think the typical setting might be a bit to much?
By the way, someone wrote me off list indicating they couldn't help me
unless I supplied more information. That information would be:
5/16 - 18 grade 5 bolts
Aluminum 6061 alloy
> -----Original Message-----
> From: firstname.lastname@example.org
> [mailto:email@example.com] On Behalf Of Bob Spidell
> Sent: Tuesday, July 13, 2004 8:37 AM
> To: 'Shop Talk'
> Subject: Re: Air compressor head bolts
> There are several aluminum components--shocks, carbs, thermo
> housting--on my Austin-Healey 3000. I have had success using
> hardened ("grade 8") washers under the bolt heads to securely
> "clamp" the aluminum component (especially the shocks, which
> are known to work loose). I don't believe in using
> lockwashers, because they dig into the aluminum and can loosen.
> If it's a critical component--like the shocks, which in the
> front form part of the suspension--I use blue Loctite on the
> bolts and torque according to bolt size.