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  1. #1

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    Ada head or keep stock head and get it milled?

    I know group k says to keep stock head because it seals and they say it cools better. What do u guys think and run on your skis.


    Thanks
    joe


  2. #2

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    Should I get an Ada head or just mill the stock head. Has anyone had issues running ada head on a 65u?

  3. #3
    Yamaha artisan Cutlass's Avatar
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    Both the milled stock head and the ADA head have a good reputation around here so you should be fine if you go with either.

  4. #4

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    Thanks cutlass.

  5. #5
    Budman's Avatar
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    If you are getting the cylinders ported you should go with the ada head. You will loose compression when they make the exhaust port larger. My cylinders were ported by the Judge. I had riva mill the head. I only ended up with 126 psi compression on all cylinders due to the porting. With the ada you can pick the right domes to get the compression you want. Oside Bill said that 38cc domes would be a good choice for this setup. With a stock exhaust port it would give you 180 psi. But ported it should give you around 155 psi.

  6. #6

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    Budman your exactly correct and I have an ada head on the way. Thanks for the knowledge I really do appreciate it. Joe

  7. #7
    Mpeavler's Avatar
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    Glad you got it from Bunty....it was never ran...

    M

  8. #8
    Flying Scotsman's Avatar
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    ADA head is the way to go

  9. #9
    Budman's Avatar
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    Anybody got one cheap? I want one but the checkbook says "forget it buddy"

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