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i'm thinking about replacing my seized compressor and doing an r-134a conversion. what i need to know is... are the compressors from differnt years at all compatible. id like to get one from a junkyard and rebuild it... apparently the compressor from my 92 isnt buildable. saabsite has these

APPLICATION PART # PRICE Click to enlarge!
900 81-90 AC Compressor ss170pss Seiko-Seiki
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900 84-88 AC Compressor 8V Up to Vin F1025631 Up to Vin F3009792 Sanden
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900 86-90 AC Compressor NEW 4073995 $ 515.00 Buy Now
900 91-94 AC Compressor NEW 4017718 $ 610.00

anyone know if i can retorofit an older one, incase can only find an older junker
 

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You should be able to find a junked '91 to '93--or a '94 convertible.

I looked at all the different compressors on my parts CD, and they look the same to me (even their clutches have the same part numbers).

But, unless anyone else can advise you differently, I'd stick with the years listed above just to be safe.
 

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So long as the pipe fittings, the pulley and the compressor mountings are the same, no problem. I wouldn't expect the pulley to have changed but, in theory, you could change over your pulley to the new compressor. If you're taking a compressor off a parts car, take the mounting bracket too. That way you only have to worry if the block/head changed (stick with a 16V parts car for this). If the pipe fittings are different you would need to take the pipes off the donor car too or have the donor car fittings grafted onto your pipes. Chances are these fittings are the same though... Choose the latest car you can find in case stuff changed over the years.
 
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