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  1. #1

    Stock Compression

    What should the compression numbers be with stock heads on my 04'?


  2. #2
    r33pwrd's Avatar
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    I THINK 130psi

  3. #3
    philip_gpr's Avatar
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    maybe 115

  4. #4
    Moderator RX951's Avatar
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    120-125 at sea level

    No less than 91 per the GP1300R manual

  5. #5
    Quote Originally Posted by RX951
    120-125 at sea level

    No less than 91 per the GP1300R manual
    Now who would go looking in the manual for something :P


    Thanks

    I'm at 1100 above sea level and have 97 99 99, so I guess its ok. Not great but not the end of the world either.

  6. #6
    There is no VooDoo like BadVooDoo NeVerMind's Avatar
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    it REALLY depends on the gauge as well.. My cheapo reads 125 or so and my snap-on is 155.

    But I am not stock.

  7. #7
    Quote Originally Posted by NeVerMind
    it REALLY depends on the gauge as well.. My cheapo reads 125 or so and my snap-on is 155.

    But I am not stock.
    I'm just using a cheapo from Autozone...

  8. #8
    As stated before my cylinders are reading 97 99 99 psi. I assume that for whatever reason the psi is a bit low... would putting aftermarket heads on make or create any problems for me down the road?

  9. #9
    Moderator RX951's Avatar
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    I'm just using a cheapo from Autozone...

    If its a cheapo, I would not fully trust it. See if you can borrow a good one to check it and compare the two.


    would putting aftermarket heads on make or create any problems for me down the road?
    Depends....if thats a true reading or not. I would get a better guage and find out; compare.


    Snap-On
    Craftsman
    Milton

    ect...........

  10. #10
    mtrager's Avatar
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    I just went through that with both of my skis.

    I put three different brand new gauges on and got three different readings.

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