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  1. #31
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    Click image for larger version. 

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ID:	433871 hey guys finally got my gasket kit in getting ready for reassembly but last night I found these heads that are al stoker (racer) was wondering if they would benefit my motor.

  2. #32
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    Definitely...!! What boat are you running it on?
    Last edited by mrichartz; 03-17-2019 at 09:13 AM.
    '84 Checkmate Convincor twin v6 closed deck Evinrude loopers Heavily ported, finger ported pistons, 2.7 heads,drilled/relieved exhaust,148 psi comp, milled fingered vertex pistons
    CDI 8500 digital ignitions Boyesen reeds..And more....

  3. #33
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    20 foot charger tv it's a modified vee hull.Does 82mph with the 89 evinrude 225 and a 28pitch raker Click image for larger version. 

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ID:	433872

  4. #34
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    Thought so from the name..
    '84 Checkmate Convincor twin v6 closed deck Evinrude loopers Heavily ported, finger ported pistons, 2.7 heads,drilled/relieved exhaust,148 psi comp, milled fingered vertex pistons
    CDI 8500 digital ignitions Boyesen reeds..And more....

  5. #35
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    U got motor assembled yet?

  6. #36
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    No not yet going to clean up the garage today and start building tomorrow.

  7. #37
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    You do anything else that would raise compression?
    '84 Checkmate Convincor twin v6 closed deck Evinrude loopers Heavily ported, finger ported pistons, 2.7 heads,drilled/relieved exhaust,148 psi comp, milled fingered vertex pistons
    CDI 8500 digital ignitions Boyesen reeds..And more....

  8. #38
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    No I'm going to leave the exhaust relief holes open. I dont want to run anymore the 91 octane as it's not that easy to find much over that.

  9. #39
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    Are there any books out there on porting v-6 omc’s, and who is the best porter on OMC’s,. Heard about monty, anyone in GA. Maybe?

  10. #40
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    Quote Originally Posted by HaulNbass View Post
    Are there any books out there on porting v-6 omc’s, and who is the best porter on OMC’s,. Heard about monty, anyone in GA. Maybe?
    James Perry in Tennessee..does great work he did my motors
    '84 Checkmate Convincor twin v6 closed deck Evinrude loopers Heavily ported, finger ported pistons, 2.7 heads,drilled/relieved exhaust,148 psi comp, milled fingered vertex pistons
    CDI 8500 digital ignitions Boyesen reeds..And more....

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  12. #41
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    One trick I learned was oil them down with the oil you will use during use after the build and it’s running.

    After port work not much left.

    Reeds and stuffers can can play with them seeing how the reed material adjust reed timing and gives the best crank fill. Stuffers can increase flow.

    Spacer height to adjust case fill velocity which packs more in the case.

    You can can also do some exhaust stuff. But factory is pretty good. Drag vent (ofshore cutout ect).

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  14. #42
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    Ok guys it's taken me way longer then I wanted but I got the pistons in and connecting caps aligned and torqued down and I'll be working on it all day today but one thing I'm wondering is jet sizing now that I've done this port work?

  15. #43
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    Yeah, them little things are expensive. And I only have to buy sets of 4.

  16. #44
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    I guess b4 1 starts attempting a educated guess he would need to know exactly what all was done to mota , would def help ,, maybe racer will see it , the omc guru

  17. #45
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    The only thing done is the exhaust porting.

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