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  1. #1
    Moderator DrewNJ's Avatar
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    1300 STOCK compression

    Does yamaha stagger the compression on the pto cylinder from the factory on the 1300 motor?? STOCK motor.

    I know they do on the 760 but heard rumors about the 1300 too??
    Thanks
    Doug


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    Cool

    think all the same ,they play with ing. timing .is it p/v or not pv?

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    Moderator DrewNJ's Avatar
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    Quote Originally Posted by chip View Post
    think all the same ,they play with ing. timing .is it p/v or not pv?
    p/v or non-p/v. Doesn't matter. Just wondering if they did do it. I thought I remember reading that it was common for #3 to be down 5 or so stock..... Thought it had something to do with dome size??

    I'm sure that when I'm done typing this and do a search I'll find it....

  4. #4
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by DrewNJ View Post
    Does yamaha stagger the compression on the pto cylinder from the factory on the 1300 motor?? STOCK motor.

    I know they do on the 760 but heard rumors about the 1300 too??
    Thanks
    Doug
    Yes they do. Its usually 5psi lower. Bigger chamber in the head.

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