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Rodan
Rodan SuperDork
12/8/22 12:16 p.m.

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.

PMRacing
PMRacing GRM+ Memberand UltraDork
12/8/22 12:42 p.m.

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.  

Iusedtobefast
Iusedtobefast Reader
12/9/22 10:03 a.m.

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

GameboyRMH
GameboyRMH GRM+ Memberand MegaDork
12/9/22 10:23 a.m.
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 laugh

 

 

ProDarwin
ProDarwin MegaDork
12/11/22 7:00 p.m.

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

gearheadE30
gearheadE30 Dork
12/12/22 10:25 a.m.

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.

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