View Full Version : quick t3/t4 flange question

10-15-2003, 12:00 PM
How thick should the downpipe flange be that bolts on to the back of my t3/t4? I am having my downpipe made and dont want to have to replace that flange later on because it was too thin and warped from all the heat... the turbo uses the 5 bolt style flange (its externally wastegated) if that makes a difference.

steve shadows
10-15-2003, 12:01 PM
www.Cheapturbos.com (http://www.Cheapturbos.com)

the flange you need is on there


10-15-2003, 12:50 PM
ummm, thanks... but my question was what is the minimum thickness a flange like that should be, not where I can buy one...

10-15-2003, 02:02 PM
I'd say that 3/8" should be good, although you may want to get 1/2".

10-15-2003, 08:36 PM
1/2" flanges r the best less warpage when u weld on it

10-15-2003, 09:58 PM
thanks all, I have a 3/8" flange that im going to use for now. In a couple months I think Ill get a 1/2" flange or maybe even a vband, hopefully I wont have any problems with the 3/8" flange in between now and then.