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  1. #1
    Mongoose's Avatar
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    Gp1200 cyl head-whos?

    Im going to fit a aftermarket head(if I can find one!)
    What's everybodies favouite one? 97-99 gp1200.
    I want to keep the stock head gasket.
    Thanks


  2. #2
    Flying Scotsman's Avatar
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    Pro tec C3 head or Pro Design Cool head were both good heads.
    I like the pro tec head and the fact you can change compression with a domed head.
    Scott........
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  3. #3
    Mongoose's Avatar
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    Scott,
    Any problems with the 'o' ring sealing with the gp1200 cyls?
    Was told to stay away from the o ringed heads with my blaster.
    Thanks

  4. #4
    Flying Scotsman's Avatar
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    Orings were not a problem we typically stay arround 150 psi.
    I like orings over a stock gasket.
    Scott.

  5. #5
    Old Ski Insanity w/rpm500's Avatar
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    Not to steer you from adding a hp head , especially if you can find one cheap enough!!Have you thought of milling your stock head?? IMT, that these done right with the squish cut are very reliable, and not as lible to leakage as oring heads ,will take an over heat better and cool very well.. If I remember correctly, you ride rough ocean surface (and some times under ), I'd think you'd wish build as bullit proof as possible .. just my 2 cents...

  6. #6
    Flying Scotsman's Avatar
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    Stock head has exellent cooling and you can get it cut.
    I like to take mine off to inspect the piston wash and cylinder bores I also like to raise compression to 170psi once in a while the stock gasket is only good once or twice the orings last at least twice as long and are cheaper to replace.
    Just my 2 cents the stock head cut right is a excellent choice.

  7. #7
    ....back from the dead.... J-ME's Avatar
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    I personally won't even use a head with O rings if I was given one.

    The best deal IMHO is a ProTec billet head or the Triton head that Bullraider had reworked.

    The next best is a modified stock head.

    Make Eric an offer...http://cgi.ebay.com/ebaymotors/yamah...mZ110052081013

  8. #8
    Flying Scotsman's Avatar
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    Thats a nice head but what is the psi
    Looks like race gas would be needed.
    SD

  9. #9
    Moderator OsideBill's Avatar
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    I just sold the Pro-tec one I had it was 150 PSI I have a Pro Design Head 38 CC Domes sitting on the shelf I am running a GroupK modified OEM head on both my 65U motors they ran around $145 to modify both are 150 PSI

  10. #10

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    I run a Riva w/ the O-rings and ran a pro-tec with O-rings before that, no problems with either one (except getting them on sometimes can be a little tricky).

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