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  1. #1
    PWCToday Newbie
    Join Date
    Aug 2017
    Location
    North Dakota
    Age
    38
    Posts
    20

    Newb question on aftermarket heads

    Hi all. I have an 88 650X2 that I am starting to build. I have never done anything with aftermarket heads. I see a lot of West coast heads on build. Is this the best head put there? I currently have a stock 650 motor, mariner pipe, PJS exhaust mani, 44SBN carb with intake. I have not installed any if this. With my current parts what head would work good? Thanks all...

  2. #2
    Top Dog w650gb500's Avatar
    Join Date
    Jul 2009
    Location
    northeastern PA
    Age
    52
    Posts
    1,383

    Re: Newb question on aftermarket heads

    Send your stock head out to be cut/re-shaped and raise the compression to 180 or so. Advance the timing and lighten the stock flywheel. You will spend ~$200 and it will feel like a totally new ski. Find yourself a 9/17 big-hub swirl impeller and you will have a great set-up with minimal cash spent. Spend the rest of your $$$ on gas and go ride!!!
    Dan Lipperini Jr

    www.RaceLabz.com

  3. #3
    PWCToday Regular
    Join Date
    Feb 2016
    Location
    New Jersey
    Posts
    120

    Re: Newb question on aftermarket heads

    I think w650gb500 is absolutely right. No need for an aftermarket head if you get the stock one machined properly. His recommendations, combined with the other aftermarket parts you have, will produce an excellent ski.

  4. #4
    PWCToday Newbie
    Join Date
    Aug 2017
    Location
    North Dakota
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    38
    Posts
    20

    Re: Newb question on aftermarket heads

    Sweet. Where can I send my head to for machining

  5. #5
    Top Dog w650gb500's Avatar
    Join Date
    Jul 2009
    Location
    northeastern PA
    Age
    52
    Posts
    1,383

    Re: Newb question on aftermarket heads

    Chris Newmiller is MCN6 here on PWCToday. PM him for machine work on the head and flywheel.
    Dan Lipperini Jr

    www.RaceLabz.com

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