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Thread: Fast Fred's OMC Mod 50 secrets Thread #2

  1. #1
    Sam Cullis Mark75H's Avatar
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    Default Fast Fred's OMC Mod 50 secrets Thread #2

    Carry on here!

    Here is a link to the beginning of the original thread: http://www.boatracingfacts.com/forum...ead.php?t=2052
    Last edited by Ron Hill; 01-18-2013 at 12:19 PM.
    Since 1925, about 150 different racing outboards have been made.


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    YARD BIRD
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    Default Yes Sir !

    [QUOTE=Mark75H;67793]Carry on here.............................................. .............................
    .................................................. .................................................. ..................................
    I find all this very interesting , as I have 4 - 49 cube motors, including a 65 short shaft, a 70 powerhead on a hustler short shaft, a 70 long shaft w/power trim and a 19 75 -75 horse Hustler short shaft , that had been raced in Sport E .

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    Team Member 850cc racer's Avatar
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    so fred i have seen these cast in liners you have spoken about, both my 814cc blocks have them,... so what 49 cuber can i get to run those mcdaniels pistons in??

    p.s. this is the best thread and site ever! i spend all day on here at work!
    Likes arizgladiator liked this post

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    FFX-61
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    it's not easy to find a press in liner Mod50 case, if ya did you most likely need sleeves,???? i have not found any,

    any way, castin works,
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    Team Member 850cc racer's Avatar
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    ahhh well i am in business then, no havent found any without castin liners..

    so to make this work with the mod50 pistons what clearances will i need etc? as you mentioned the 25hr life span will come into play...
    im tipping it more then the .008?

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    FFX-61
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    the piston +.008 be good, when She gets to temp She'll be that .004 -.0045 Mr. NERSTROM was lookin for.

    She's guna get hot on the exhaust bridges, best not to make them toothpick thin, be best to back them out of the bore.

    i'll get a fresh shot of the press in Mod50 case

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    Team Member Detroit Whitey's Avatar
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    Can anybody still get pistons from Phill? The Last i heard was he was out.

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    Hey Fred,

    Why you say to lose the Stacks?

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    Team Member 850cc racer's Avatar
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    hey there fred.. so my new 56cuber im building has finger ports however they are .500 wide so im thinking i dont want to make the holes in the piston that big.. or do i im thinking it dont matter if they arent the same width..

    will post a thread on drilling my fingerports in my wiseco's then we can all share info

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    FFX-61
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    the stacks will speed up the air more, the low pressure at the Ventori will get too high and the mix will get too fat, slows her down.

    don't think Phill has any bullets left, thinkin Sea-Way gots one ring at 3.030
    Likes Xpress2830 liked this post

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