Hi there, i have a customer interested that i build an aluminiun exhaust for his evo 5 , never made an al exhaust really , ive seen some of these but i'd like to know if will be safe to make that after downpipe of course. Any experience with this?

Thanks!

 

As long as the downpipe and manifold isnt aluminum you should be good. Aluminum melts quicker than steel and would not make good candidate for header material. For piping it should be fine. Tig weld it to make it look the way it should as mig welded al exuasts look like a wste of energy.

 

Proper bracing at key point, support the hanger and use all the hanger.

 

I would find key points where vibration could create stress cracks and address them.

 

We have had better luck with 14 gauge compared to 16 gauge for aluminum exhausts. But it holds up fine. I even have an aluminum down pipe on my car

 

i use 14g for the 8.5lb alum exhaust i build for the 2.0 genesis.

 

I've used 16 gauge and 11 gauge on 2 different cars.. both have been holding up just fine, both are turbo cars making over 500whp and 3-4 years on car.

 

I haven't delt with the import stuff much or many street cars running it but on some of the turbo racecars I am around they all use it. I have seen a 800ish hp blower car melt the aluminum exhaust that connected to the longtubes while on the 2 step. I am not sure what condition it was in before that happened but it went from kinda loud to really loud quickly.

 

thanks for info! b20luda, what muffler didt you use? how much and where to get it? Thanks!

P.S Aluminium downpipe? i'd like to see some pictures of that!!! nice.

 

I keep forgetting to get a better picture of it but this is one on a guys car that I help with.

 

Where do you guys buy your aluminum for exhaust work?

 

www.globaltecheng.com

 

http://www.hyperformanceracing.com/

 

what gauge? nice work!

 

Thats just 16 guage but some use 11 guage for right off of the turbo.

 

Super important if you plan on street driving it at all . . .