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  1. 09-10-2009, 11:57 AM #1
    98allison
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    2007 Merc Optimax 250

    What water psi is acceptable at 5000 rpms ???
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  2. Daddychatham
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    #2 09-10-2009, 12:17 PM

    Re: 2007 Merc Optimax 250 (98allison)

    Anything 15psi and over ... actually wht is it a WOT?
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  3. todd250
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    #3 09-10-2009, 02:02 PM

    Re: 2007 Merc Optimax 250 (Daddychatham)

    10psi
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  4. Cooney
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    #4 09-10-2009, 03:35 PM

    Re: 2007 Merc Optimax 250 (98allison)

    I thought anything under 12 psi. would void the warranty if something happened.
    2000 Champion 203
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  5. 250XDC
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    #5 09-10-2009, 05:06 PM

    Re: 2007 Merc Optimax 250 (Cooney)

    That's at wide open throttle.


    21XDC / 250 PROXS
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