Quote:
Originally Posted by epson1
Oh really how many times have YOU broke your aluminum exhaust in the street?
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I have a bit of experience with different exhaust constructions.
If you're going to attack this project you need to do some series research into tubing thickness and more importantly heat management. Aluminum tubing does not like high heat and the constant, quick heat-cycling that comes with use on a street car (think rapid thermal expansion and contraction of a brittle metal).
On top of that, there's a reason why aluminum is used for performance radiators other that its light weight - good heat conductivity. If you're going to put it on a non-race car, load up on the heat shielding, especially close to the catalyst and around the exhaust tip, otherwise you're going to have burns and melted plastics.
There's a reason why those looking for lightweight exhausts go for Titanium as the primary choice.