940 turbo, blown turbo

New Turbo, 

You can use a garrett no problem. easiest thing to do would be to pull one from a scrapped volvo or find one on ebay. Only thing is make sure that it has the same exhaust manifold. There are 2 types of manifold, those fitted to pre 1990 and post 1990. the post 1990 ones have round runners as opposed to square ones and more importantly have a round locating lip on the turbo mating face.

blown turbo 

Turbo pressure 

Hi Volvoman, I have just bought the same car you have. How do I turn up the boost?