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  1. #1
    no reverse jayohentran's Avatar
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    compression with r&d heads?

    I just installed some R&D heads on my 05 gpr and I was wondering how much compression am I supposed to be getting? I am getting 130 on each cylinder.


  2. #2

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    Quote Originally Posted by jayohentran View Post
    I just installed some R&D heads on my 05 gpr and I was wondering how much compression am I supposed to be getting? I am getting 130 on each cylinder.
    hold throttle all the way open and leave other 2 plugs in when u check u should see around 150ish

  3. #3
    Mike xsockguyx's Avatar
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    Is your battery fully charged?

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    no reverse jayohentran's Avatar
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    Quote Originally Posted by gpr2000 View Post
    hold throttle all the way open and leave other 2 plugs in when u check u should see around 150ish
    i didn't do that, i'll give that a try tomorrow.

    yep, battery is fully charged, ski will crank up everytime.

  5. #5
    One day at a time..... N8R's Avatar
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    Quote Originally Posted by jayohentran View Post
    I just installed some R&D heads on my 05 gpr and I was wondering how much compression am I supposed to be getting? I am getting 130 on each cylinder.
    what kind of compression gauge? the cheaper ones seem to never read right

  6. #6
    If your not doing something, its hard to screw up. stlouisramsfan's Avatar
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    Quote Originally Posted by N8R View Post
    what kind of compression gauge? the cheaper ones seem to never read right
    + 1

  7. #7
    no reverse jayohentran's Avatar
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    at first I thought it was the gauge too, but I used 2 different brand ones and they both read the same. I did the throttle lever thing and it went up to 150. Thanks for all the help!!

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