quattro digest, Vol 1 #3182 - 16 msgs

[JShadzi at aol.com]

taka, maybe you are referring to 321 stainless, which is only necessary for
turbo headers and ultra high output race applications.  Most Downpipes and
exh. systems are fine with 304 stainless.  321 has a bit of titanium in it
giving it the high heat durability and aircraft specification.

This is all at the thinner 16 and 18 gauge sizes.  I used 304 stainless for
my header, but the wall thickness is 1/8", and is more than strong enough.

Javad

<< You'd need to go to 2.5"
 dual
 pipe to see significant increases in cross-sectional area, and then it
 really
 gets prohibitively expensive- I checked those Burns stainless prices for
 421 stainless- ouch.

 Taka >>