Quote:
Originally Posted by Dimman
Expands and contracts too much with temp changes. Weak when hot. Probably severe corrosion issues when hot, too.
There are aluminum race mufflers, but a full exhaust wouldn't last very long.
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If the whole thing is aluminum expansion wouldn't be an issue but I guess the headers see some high temperatures and that would be bad. However how much mechanical stress does the exhaust even go through? And how would it have corrosion issues when hot? Sorry if these are dumb questions I sorta don't see what's so bad about aluminum, steel doesn't seem to be any better
