b16crex

my outlet diameter on my exhuast side of the turbo measures 2.5 inches... I will be using a 3 inch downpipe, so what diameter outlet do i want to get for a T3 5 bolt exhaust flange? should i go with a 5 bolt flange with a 3.0 inch outlet diameter?, 2.75 inch?, or 2.5 inch? does it really matter even? thanks.

90turboteg

just go with the 2.75 or 3", less restrictive, internal or external gate?

whiterice

either way there will be a step to the 3" dp. with the 3" flange your dp will have to be right on. with the smaller sizes you will have some room to weld with.

b16crex

its externally gated. alright, ill probably go with the 2.75 " so i have some room for the welding like whiterice suggested. Thanks doods

b16crex

I see all these t3 5 bolt discharge flanges for my turbo. Which one do i need. I read that many 5 bolt discharge flanges are different...? help meh. thanx

90accordIHI

what is the turbo out of?? they make different flanges for ford and merecedes turbos

b16crex

it's the ford style... off a t-bird

b16crex

i see the mercedes type look different then the other 5 bolt flanges ive been looking at, but then theres 2 others that look similar but slight differences in the shape. says for t3/t4?