??t3/t4??

whats the difference between the t3 and the t4 flange?

T4 flange is bigger in all dimensions that the T3 flange. Some T4’s use a divided housing (but not all).

Bob Myers

Yup … Main difference is just a bigger dia. all around

as in ID or just bolt pattern or both?..do they make t4 flanges to weld onto manifolds?

No clue about the weld ins … sorry

the bolt patterns are different and the t4 is bigger and can make alot more power on it unless you like the to make big power on a little t3 turbo and a little 1.6L 1595CC MOTOR LOL

1

t3:
http://www.forcedinductions.com/images/T3flange.gif

t4:
http://www.forcedinductions.com/images/T4flange.gif

hmm interesting