on my rb20 i recently swapped a rooted S1 turbo for an S2.
while both were off the car i noticed that the 2 have slightly different compressors. the upper blades seem to be the same, but the lower blades on the S2 sat further in and were more tucked away out of sight when looking directly down on it. the S1 though had clearly visible lower blades that stuck out past the upper blades a little and seemed to come up higher towards the edge of the upper blade...
sorry for the crappy description
anyway, i ran it past cubes and he suggested it may be the R34 compressor and sent me a couple of pics. the turbo is on the car now so i cant do a proper comparison, but from what i remember its very similar to whats in the pics.
does anyone know for sure if the R34 compressor is the same as the R33 S2?
i always assumed S1 and S2 were the same, just made from a different material. and from what i've seen on here most people think the same thing too
any help would be great
cheers, showza