Anybody tried an aluminum exhaust?

In reply to Byrneon27 :

AutoX and street won't develop the same kind of heat in the exhaust as track driving...  I've had urethane exhaust hangers melt on track with a stock Miata engine.

My Miata came with an AL exhaust.  It was an autox car I redid for track days.  Melted the exhaust 2nd weekend out in front of the cat. That was after it looked like it farted out a squirrel because all the muffler packing blew out the tailpipe. I had to piece together a straight pipe exhaust to finish the weekend and drive home.  

My late grandfather replaced the exhaust on his motor home with 2" copper. The kind used for water services. I don't recall it melting,ever. It was probably pretty heavy, that was a long run to the back. He owned a construction company that put in water and sewer so he had access to plenty of copper

Iusedtobefast said:

My late grandfather replaced the exhaust on his motor home with 2" copper. The kind used for water services. I don't recall it melting,ever. It was probably pretty heavy, that was a long run to the back. He owned a construction company that put in water and sewer so he had access to plenty of copper

I assume it eventually turned the same color as the Statue of Liberty? Also if a meth-head ever went looking under there, they would've ended up dancing the whole way to the scrap yard with the pipes to this tune

 

Dave Coleman is back on the GRM forums? Please stick around this time :)

In reply to Iusedtobefast :

I didn't know how to weld when I was 17 and built the first version of my turbo 318is, so I used copper flex piping intended for plumbing. I never had an issue with it, aside from melting all the paint off of the bottom of the hood and inner fender.