Subject: RE: exhaust nut testimonial
Author: stephen brenton
Date: Jan 11, 2002, 12:55 PM
Post ID: 1709361155
The thread had an OD of around 1.88, therefore circumference would be
less than 6". But it's not circumference that matters is it? Isn't it
diameter? And if stainless isn't used what's the other choice? Steel?
Brass? How do their CTE's compare to Alum? Unless you use Alum (or a
material with the same CTE as Alum) there will be dimensional changes as
temperature changes. But they are small.
Where are we going with this?
-s.
Tim Youtsey wrote:
| As far as Coefficient of thermal expansion (CTE) aluminum is about twice that of steel. If we say the circumference of the exhaust port is around 7 inches, the difference would be about .020 inches at 400 degrees F. Tim |