Hey all, I just took the 'stock' (or at least I think it is) turbo off my rb20... and when I compared it to the turbo that I have been told is from a Rb25, I noticed something strange.
The compressor wheel on the Rb25 turbo is bigger as expected... however, when I look at the exhaust wheels, the rb20 turbo appears to have a larger exhaust wheel... why would this be?
I would have expected the rb25 would have been bigger at the exhaust wheel as well due to having more gasses passing thru it due to being bolted onto a bigger engine.
I've included pics, can anyone shed some light on this?
Also, when I took the rb20 turbo off, some coolant came out of the dump pipe... again, should this be a concern?
Thanks in advance
RB20 turbo on RHS in this pic:
RB20 turbo on LHS in this pic: