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Old 08-22-2006, 09:01 PM   #1
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Default Question on pulley size difference.

I just got done cleaning up the 2 superchargers I nabbed at the boneyard in Illinois. I had them next to each other and noticed the pulley size was the only difference between the two. How significant is this when I list these on Ebay? One was pulled off of a 92 SSE Supercharged and the other off of a 95 Rivera. The SSE pulley is like 2 3/4" and the Rivi one is like 3". Does this make it Rivi specific unless a pulley change is done? How much less boost would this make on a Bonne? In case you are wondering they are both very tight and one has been rebuilt. I would trust them on my car any day. I will post them here first when I get the answers I need. Thank you all.
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Old 08-22-2006, 09:36 PM   #2
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If you look at the inlet end, the SC off the Rivi should have a larger inlet. The ribs on top of the body should be more prominent on the 92. You may not be able to tell, but the Rivi should have epoxy coated rotors, which ties to the larger pulley. The epoxy reduces backflow, so the SC can spin slower and make the same boost, hence the larger pulley. Each has a different throttle body that will properly mate to it. The corner to the right of the inlet isn't as thick on the Rivi.
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Old 08-22-2006, 09:38 PM   #3
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yep one will work with the 92-93 l67 and the other will work with the 94-95 L67


gen 2 was 2.53" and the gen 3 was 2.8" I believe. I've owned both styles and prefer the 92/93 motors for a few reasons.
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Old 08-22-2006, 10:18 PM   #4
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Ok, cool thank you for clearing that up for me. I guess thats why the rotors on the Rivi one look darker. So I basically have a 92-93 SC and a 94-95 SC. Both are universal in the vehicles for those years then?
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Old 08-22-2006, 11:01 PM   #5
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yes...would you be interested in a trade for a Perfect working 93 SC for the 94-95?
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Old 08-23-2006, 12:15 AM   #6
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Quote:
Originally Posted by 1993 SLE
yes...would you be interested in a trade for a Perfect working 93 SC for the 94-95?
Not sure if its worth the shipping for the swap to me anyways. I just picked them up so I can make a few bucks on Craigslist, Ebay, or here. How bad do you need one?
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Old 08-23-2006, 12:56 AM   #7
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Stock pulley sizes are 2.55" and 2.85" for those two generations. Be VERY careful if you intend to clean the 94/95 SC. Use ONLY mild cleaners like simple green or castrol super-clean, or you'll destroy the coatings.

Both of those cleaners will ruin the grease in the needle bearings, requiring rebuild (which they will both need anyway).
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Old 08-23-2006, 01:59 AM   #8
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Darn well I guess I have 2 good cores then unless you would think brake cleaner would dry fast enough without harming them ?
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Old 08-23-2006, 02:00 AM   #9
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Quote:
Originally Posted by Blownville
Darn well I guess I have 2 good cores then. What are they worth?
$10 each.. you take paypal?

going price on ebay seems to be give or take $150
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Old 08-23-2006, 02:03 AM   #10
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Lol! That was a quick reply. I would sell them for $90 each. Let me know.
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