[Supras] ARP-2.2 mm Cometic head bolt retorquing

[Walker, Brian (Rich. Dist)]

Really, I thought that was the original problem (stock spec not being
beyond yield) and the reason people suggest not re-using stock bolts.
I'm not debating the need for retorquing, just stating what I thought
was a reason the torque may not have backed off (unlike wheel lugs which
can loosen considerably). Personally I wouldn't want someone doing
engine work that wasn't familiar with Al. heads or I-6's. 

Thanks for the insight on the gauges Jim, I didn't realize some are
glycol/oil filled. I'll make sure that's what I'm using.

-----Original Message-----
From: Jim Jobe [mailto:jjobe2 at supratech.org] 
Sent: Monday, October 29, 2007 9:57 AM
To: Walker, Brian (Rich. Dist)
Cc: berniek at technicaldevelop.com; Supras at supras.com
Subject: Re: [Supras] ARP-2.2 mm Cometic head bolt retorquing


Neither stock no ARP bolts/studs for the 7M are TTY.  I've always
retorqued once after a few thousand miles but make sure to turn the
bolts/nuts as little as possible when breaking free to avoid losing all
clamping force on the HG.  This is a very subjective area and most of
the "racers" and "engine builders"
do not have experience with inline 6's, much less those with aluminum
heads.

Most fuel pressure gauages are oil filled.  They leak oil (and only a
little) when broken, not fuel unless the internals broken too.  Most
have a rubber plug on the back where you can refill them.  The problem
with them however is the reading will change with temperature.