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  1. #1
    thetolleyman's Avatar
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    Max psi on pump gas?

    I'm sure this has been address many time, but came up blank on search. How high can I go and stay safe on 93 octane. We're talking about two stroke Yamahas in general.


  2. #2
    It depends on the motor. In general, I beleive all of the two cylinder motors are about 185 PSI max, and the tripples are about 165 PSI max.

  3. #3
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    I thought it was 150 psi. Pm osidebill

  4. #4
    Happily Self-Employed WFO's Avatar
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    Powervalve motors can handle more compression than non-pv motors. With all the ethanol fuels now days, Id be more concerned with adding more fuel, even on stock motors

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