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Hi there.
I've noticed that my turbo is leaking, so a rebuild is in order. I went to my local turbo refurbish shop, and after the giving it a look the mechanic made the question: "Are you sure this is the original turbo?" He is not a Saab specialist, but I'm guessing he knows his turbos..
It is a valid question though. I've tried to search the internet to try to find the turbo makes and models by year and engine type,but to no avail.

Can anyone give me a hand? My 900 is a Turbo coupe (non-APC), from 1981 (July) with a B201 engine.

Cheers
 

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Until 1990, Saab 900s used Garrett turbos, based on the "T3" (TB03xx) frame. IIRC, the 8V cars (both APC and non-APC) used a 40 trim wheel while the 16V used a 45 trim wheel. Both used a .42 AR compressor housing with a .48 AR turbine housing.

Edit: That applies to H-motor cars. The earlier B-motor cars were also T3, but TC03xx. They had a .63 AR turbine housing and used a large 60 trim wheel. The idea of "small turbo" hadn't really been invented yet. :)

I think what primarily separates a TC from a TB is the TB uses a swing valve for the wastegate, but I wouldn't swear by it. My experience with b-motors is limited to two. :)
 

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I doubt there are any differences of importance. Garrett had a million part numbers, and it simply could be minor yearly production revisions or different manufacturing lines or whatever. When it comes to Garrett, there are broadly four things you need to worry about: frame, trim, compressor housing, exhaust housing. All h-motor APC turbos share the same specs; they are all interchangeable.

From a rebuild perspective, I could see a scenario where Rev A uses a different seal than Rev B, BUT I highly doubt this applies here. I believe all T3 frame turbos share rebuild kits.

Tell your guy it should be a T3 with a 40 trim wheel and a .42 AR compressor housing with a .48 AR turbine housing. Then see if he thinks it's been changed. :)
 
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