I wasnt talking about cores or bearings as they are all the same other than being water cooled or not and ball bearing or floating bearing etc.


The T34 and T4 compressor housing, compressor wheel and back plate are different and can not be mixed matched.

The exhaust housing is also different, obviously. As one turbo uses a std size T3 shaft and the other a T4 shaft.

A T4 shaft will not fit into a T3 housing that the T34 uses. Either housing cosworth setup or escort rs or any other.

You can mod the T4 shaft by machining it down to fit into a T3 housing. Waste of a T4 shaft tho.

Next is that a T4 compressor wheel will not fit a T3 shaft so again you cant use bits of one and another.






Im not a trader on this site so cant offer any prices or quotes for work etc, just offer advise and help for those who asked for prices.

Regards
Jano