ok guys i need to find out from your guys that have a t3 turbo and when it comes on boost im tryin to find out if mines a t3 or not i cant see anythin written on it without taken it off and i cant be bothered to do that yet, so the situation is my turbo is boosting at 4k at 18-20psi and the acuator is fine and there are no air leaks i had it checked so let me know guys thanks

 

difficult to saywithout taking the pump off
on the side of the turbine , you will see 0.48 in raised lettering on the casting
on the compressor side , you will see 0.42 , also on the casting
this would be a std t3/t3

regards
Steven Botes

 

steven botes

No offence, but ur wrong lol

The turbine (exhaust) housing is marked on the inside - where the flange meets the manifold.

Secondly - an RST turbo is 0.36 as std - cossie T3's are 0.48.

You are correct about the compressor housing - 0.42 A/R - the same on all RS T3's. How ever, the compressor wheel is different - 45 trim on an RST, 55 trim on a 2wd cos, 60 trim on a 4by cos.

BIGEVILRTS

Only way to know is to take it off. Boost at 4k could be a wild or incorrectly timed cam, or a 48 rear housing.

 

It could be partially down to the cam.

Rick - How can you tell if the turbo is off?, im interested to know.

 

Turbine housing size is usually stamped inside the housing, just beneath the flange where it bolts to the manifold.

 

While my RS was on the road, it dont hit full boost until about 4k, I put it down to having a piper 285t2 cam, and probablly in need of a good setup.

Been off the road for god knows how long now!