I changed my turbo too with out any problems. I have another car so could soak the studs for a long time (a week +) Some of the studs came out with the nuts stuck to them. I replaced these studs. I used all new nuts. And new gaskets, washers and the oil filter adapter o-ring.

studs = $8
exhaust manifold gasket set= $12 (get a good set)[not auto zone , etc]
nuts = $1
the other gaskets and washers were a buck or so.
The oil feed pipe was $40 something. The turbo rebuilder insisted on a new one.
Studs that hold the exhaust down pipe flange = $12
Bolt that holds the turbo to manifold = $25! Mine is a '88 740, later years ('90+ ?) used studs and nuts.
Use plenty of anti-sieze.


I got all my parts from Swedish Engineering, a board sponsor. They are good at telling you when you must use Volvo labled stuff and not. They discount Volvo labled parts.

That was when Phillip worked there. He is now with another outfit. (770 509-7900) Sorry i can't find the 800 # or websight address. Same setup- a Volvo repair shop that sells parts and knows what works. (Professional Swedish Car Repair). Each place has excellent service.

Good luck,
chuck
--
1988 745t 152k mi, 1995 945 112k mi