Hey,

Did some searching and found a few subjects on it but nothing certain. I know I can have a custom manifold made if needed but I have an extra 13bt manifold doing nothing along with the s4 turbo.

I know racing beat has the flange as well. On that how does it work? Do you cut off the 13bt flange and weld that racing beat flange on?

Or can you machine the 13bt flange to fit?

Thanks,
Mike

 

u'll probably have to go with a custom built intake. the problem with using the t2 intake on a 12a is the front and rear intake ports wont mate up with the ports on the engine, and none of the bolt holes will line up.

 

Simplest way to get good flow, easy bolt on and clearance is to buy the RB 12A and 13B flange and heavy wall pipe, schedule 40/80. Cut the pipe to the length and angles needed for spacing, weld up, buy 2 exhaust gaskets.