building a 3" turbo downpipe for my 4cyl front wheel drive racecar. curious as to where i should start with my TIG settings? it's 3" .065" wall 304 stainless. i am using an Eastwood TIG 200. i have a backpurge setup already, just never needed to weld this thin stuff before
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3" stainless downpipe
- Thread starter that-guy
- Start date
steel 35
Well-known member
I would start my test piece at about 40A the most critical thing is the speed and watching for a very slight boil wait to see it before you start moving, then its straight smoothe, steady & 90 Degrees to keep the 100% penetration and you should be able to do it in only two starts. Start at the bottom and go clear to the top then do the other side; good luck the first 20 or so try's.
finn
Well-known member
300 series stainless has poor thermal expansion characteristics, which is why oem's use 400 series stainless.
Not as pretty but it works.
Not as pretty but it works.