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  1. #1
    skeletor88's Avatar
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    Jun 2007
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    ADA Head on 951 Twin Piper

    Hi,

    I have a twin piper XPL, (long chambers), with Novi's. The engine is 1 size over and the ski is never raced, (I'm too old now). I mainly use it for jumping in the surf and annoying RXP riders. I generally run Premium unleaded (BP Ultimate) 98 RON.

    I am looking to replace the stock head with an ADA head. Can anyone tell me what size domes would be best. I was thinking of 50cc's or would 48cc's be better?

    Are the ADA heads reliable?


  2. #2
    skeletor88's Avatar
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    Jun 2007
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    What? No replies?

    Except this one. Doesn't anyone have a modded XP anymore?

  3. #3

    Join Date
    Mar 2006
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    On a twin pipe XPL that is to be ran on pump fuel, I would be looking at perfecting the carb jetting/settings, tweeks to the impeller, drilled rave housings and dialing in spring pressure to suite the power band and cylinder porting-- the twins love cylinder porting. While the cylinder is off the ski, you can always skim the top of it .010" and put the stock head back on for a small bump in compression 6-7 psi. Also, the water box can be modded to get rid of the surge your ski may be seeing when coming out of a turn or excellerating from an idle.

  4. #4
    big john's Avatar
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    Jim is the 951 guru !!!!!!!

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