welding to the turbo downpipe

[Eric]

I just did a 3" downpipe back in Sept for my car.  It is outlined in the exhaust section of my web site listed below.  I started from scratch on everything instead of reusing parts, but the general rule for SS welding is use a filler rod that is equal to or greater than the highest grade you are welding.  So yeah 308L would work fine.  

I don't know what to tell you on the flange.  I welded on a flex couplier and then slip fit it into my slip fit 3" cat.  Try to find who in your area supplies the local exhaust shops.  I found that and payed next to nothing on most of my parts.  They would likely have access to someone who makes the SS flanges.

Good luck

--
Eric Sanborn

http://sofadog.net/4ktq/


-----Original Message-----
From: Timmmy <quattro at inspirinium.com>
Sent: Dec 2, 2003 8:53 AM
To: quattro at audifans.com
Subject: welding to the turbo downpipe

Hey All

I am about to start making my new 3" exhaust system. DOes anyone out there
know what the downpipe is made of as I need to cut the thing up and weld
new parts onto it.

I think it is probably 304 Stainless, but that is only a guess. If anyone
out there has done this, what grade of wire did you use? will 308L be OK?

Also I am trying to source some weld on 3 bolt 3"  Stainless flanges,
anyone got a good fast sourece for them?

My intention is to cut the downpipe below the wastegate, flare the pipe
and weld on a 3"flange. from there I will go round the corner and weld in
the 3" IDx6" stainless flex. on the back of that goes the 3"ID Stainless
cat with a 3"stainless flange on the back. From there back will all be
aluminized mild steel.

Cheers

Timmy
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