Ok, i have been hearing a lot of people say that you cna rebuild a stock s4 or s5 turbo with parts from a TO4. I just put a TO4b on my car and pulled the stock one.

Here's my question:

The To4 is oil cooled only. stock is water cooled. so are the parts interchangeable enough for me to throw new seals and bearings in the stock core, and put the TO4 compressor and turbine wheels and housings on it? they look pretty close externally....


thanks
Pat

 

anybody?

 

one more bump