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  1. #1

    Needed: Stock popoff setting for 2001 GP1200R

    Hi folks,
    I've been perusing the list for this info and I'm seeing a variance of recommendations. I have a an almost stock 2001 GP1200R. Only upgrades this skis is getting are WaveEater clips, D plate and oil pump block off. Carb H/L tamper plugs and stock flame arrestor will remain intact.
    I'm cleaning up the carbs and checking popoff. Readings are sky high, in the neighborhood of 65+ psi, actually higher than my gauge scale can indicate. This is way higher than I've encountered with other ski brands. Yet, I find a thread that says stock Popoff should be 75 psi. Someone else recommends not to go below 50 psi due to dribbling. I see my popoff springs are currently gold 115g, and I'm considering droping to dull silver 95g to bring the pressure into a lower range, thinking 55 psi. Can anyone confirm what my stock popoff should be?

    Thank you,
    JD


  2. #2
    Moderator DrewNJ's Avatar
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    IIRC a 115g gold spring and a 1.2 n&s is going to give you 76psi for pop off. If you change your N&S to 1.5's that would drop you to 55psi. or dropping your spring to a 95g dull silver spring would drop you to the mid 50's as well.
    http://www.greenhulk.net/forums/show...-Pop-Off-Chart

    I've never stuck with stock carb jetting but fairly certain you'd be fine dropping pop off into the 50's with no issues.

  3. #3
    Moderator OsideBill's Avatar
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    I have found that with a 1.2 N&S and 115 gram spring the pop-off averages at 82 PSI. There is no published data from the manufacturers, that I have found for the 1.2 N&S. I have come up with 82 PSI average from my own testing.

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