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Thread: Quick AC question

  1. #1
    Senior Member Giamanut's Avatar
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    Quick AC question

    Low pressure port is
    A) center on the back of ac compressor?
    Or
    B) outboard on the back of the AC compressor?

  2. #2
    Administrator Ron's Avatar
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    On the back plate, there should be a large "S" = Suction = Low Side, and a large "D" = Discharge = High Side.

    The "D" is USUALLY in the center as in the pic in this post:
    http://dmctalk.org/showthread.php?17...l=1#post248725

  3. #3
    Senior Member Giamanut's Avatar
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    Quote Originally Posted by Ron View Post
    On the back plate, there should be a large "S" = Suction = Low Side, and a large "D" = Discharge = High Side.

    The "D" is USUALLY in the center as in the pic in this post:
    http://dmctalk.org/showthread.php?17...l=1#post248725
    Thanks Indeed it is! sorry got lazy for a minute.

  4. #4
    Senior Member Josh's Avatar
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    To further add to this thread, the High side is the small hose, and the low side is the large hose.

    5.3L LS4 + Subaru 6spd 314whp/348ft-lbs
    Getting it back on the road!
    LS Swap

  5. #5
    Senior Member Giamanut's Avatar
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    Quote Originally Posted by Josh View Post
    To further add to this thread, the High side is the small hose, and the low side is the large hose.
    Yep just wanted to double check!
    Got another question that I am not to concerned about yet but!
    Just did a fuel pressure check Engine off 40F and got 25 psi control and 80 main held 40 psi after disconnecting the Fuel pump Jumper for at least 20 mins.
    Does this sound about right?

  6. #6
    Administrator Ron's Avatar
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    Yes, good readings!

  7. #7
    Senior Member Giamanut's Avatar
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    Quote Originally Posted by Ron View Post
    Yes, good readings!
    Awesome thanks!

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