downpipe flange fittings [Archive] - SaabCentral Forums

: downpipe flange fittings


snowboardin58
7th October 2006, 02:39 AM
I bought this http://store.summitracing.com/partdetail.asp?autofilter=1&part=HED%2D21118&N=700+4294923429+4294838977+4294865471+4294902233+ 4294791244+4294865463+400143+115&autoview=sku for my downpipe..Are these going to fit and bolt right up to the turbo? I would like to start soon, but maybe I need a different size.

sleeper9kt
7th October 2006, 11:22 AM
no, they won't. The stock flange is somewhere around 2.5" and I fear that the 3" will almost slide right over the studs that hold the DP on. As far as suggestions go...you could buy the 2.5" version of that and hammer the flared part a bit so it will fit, or you could figure out a way to make your own (not sure how :-( )

Good luck!

Sirhc
7th October 2006, 11:53 AM
I should have checked to see how much you paid for that unit, but you can get a three bolt flange from most local exhaust stores. One issue to watch out for is the at the bolt pattern on the flange might be a standard size and not fit exactly perfectly, you may need use a drill bit to expand the hole sizes. Once you have the flange fitting perfectly you just need the pipe and mild steel pipe is very inexpensive. If I had to guess to get something like this made locally it would cost around $15 tops. Not sure if this way is more cost effective then the unit you bought once you add in the shipping. In terms of what size to get the oem unit uses a 2.25 flange while some upgraded downpipes offer 2.5 but I have not seen anything larger mating up to the turbo without major changes needed.