----- Original Message -----
From: Florrie & Allen Bachelder <firstname.lastname@example.org>
Sent: Tuesday, December 28, 1999 1:24 PM
Subject: Stud or bolt?
> I don't know, but I have found this solution present in a lot of cars. In
> re-assembling, I've always used studs though. The bolts will either be
> long to properly torque the manifold down, or they won't thread all the
> in and the torque will be pulling on fewer threads. I wonder if there
> any heat transfer issues, although that seems a bit far-fetched.
Seems to me the reason for using studs is very simple. The threads in the
head will wear to a small extent every time a bolt is removed/replaced.
Multiply this by the number of times the bolt is shifted than add the
eroding effect of sticking through corrosion and you have the recipe for a
helicoil, sooner or later.
IMHO, the best combination is steel studs and stainless or brass nuts.
> David Hill/Psychomotor
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