R4 to Saden Compressors - JeepForum.com
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post #1 of 3 Old 04-13-2020, 08:11 PM Thread Starter
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1990 YJ Wrangler 
Join Date: Jun 2006
Location: Huntsville, AL
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R4 to Sanden Compressors

I know I'll get several comments about "why do you need A/C in a Jeep" but I use it. I have the dealership option A/C on my YJ that worked amazingly well w/o ever having to be charged. That was until I took it apart to swap in a SBC 350. This being said I'm running the pulley system off a 95 Silverado. I have the R4 pancake compressor that is not known for its longevity. I have found adapters to reuse my Sanden SD508 but I need to put a 6 groove clutch pulley on it. This is where I need help in finding a donor to get that. If I can find this 6 groove set up I'll be able to use all my original A/C system. There has to be an A/C guru lurking...

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post #2 of 3 Old 04-13-2020, 10:23 PM
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1995 YJ Wrangler 
Join Date: Mar 2010
Location: Near Whacko
Posts: 4,690
Ryder Fleet Products used to have great prices on the serpentine clutch.

Their website is currently down.

The 4th 5-seater YJ in the world.
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post #3 of 3 Old 04-14-2020, 08:38 AM
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Going by Rockauto's catalog, the SD508 also was used in a 6-groove application on dealer-installed air in 1990 4.2's. Four Seasons makes it, part number 47586.
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