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2G A/C belt, how many ribs?

Posted by ZenkaiRacerDsM, Jul 18, 2019

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  1. ZenkaiRacerDsM

    ZenkaiRacerDsM Proven Member

    658
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    Joined Nov 8, 2002
    Layton, Utah
    Whats up guys, was trying to install a new a/c belt the other day on my 97 GST when I ran into a problem.

    I noticed the crank pulley and a/c belt tensioner pulley both look like they’re for a 4 rib belt, while the pulley on the a/c compressor only fits a 3 rib.

    Autozone gave me a 4 rib that won’t work since it’s too big for the a/c compressor pulley, but it fit perfectly on the other pullies.

    Just wondering if this is normal, and is it supposed to be 3 rib?

    Thanks.
     
  2. 19Eclipse90

    19Eclipse90 DSM Wiseman

    4,157
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    Joined Sep 29, 2003
    OKC, Oklahoma
    It is originally a 4-rib belt / system. Extremely odd that your A/C compressor would have a different pulley. Do you have any idea whether it is the original or not?
     
  3. ThunderChild

    ThunderChild Supporting VIP

    2,516
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    Joined Jan 5, 2012
    Rathdrum, Idaho
    There are a couple different styles of 2g a/c compressors, but I believe their all 4 rib. Perhaps a 1g compressor has made its way into the car? I don't have one to compare to, but I believe they're 3 rib? Idk I could be wrong.
     

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  4. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    If I had seen this thread yesterday, my compressor is sitting on the shop floor for a good picture. I can do that later today to answer the question.
     

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  5. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    This is the stock 1992 a/c compressor
    15635714415771700309466979460219.jpg
     

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  6. ZenkaiRacerDsM

    ZenkaiRacerDsM Proven Member

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    Joined Nov 8, 2002
    Layton, Utah
    I've had this car since 2005 and never had to change the belt till now LOL. I'm guessing the compressor has been changed? I thought it was weird that the pulleys were for a 4 rib but not the one on the compressor.

    I'll have to get a pic of it. Maybe I can squeeze my phone in there from the top without dropping it LOL.
     

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