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  1. #91
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    So it's 20* btdc?
    '84 Checkmate Convincor
    Twin v6 closed deck Evinrude loopers
    Heavily ported,2.7 heads,cooling mods
    milled finger ported to match vertex pistons,
    All casting slag removed
    Sleeves in opposite so no idle reliefs
    drilled/relieved exh, lower and mid,
    148 psi comp,balanced pistons and rods, Holley red,Stuffed,77d jets 106 pullovers
    CDI 8500 digital ignitions ..Boyesen reeds..And more....

  2. #92
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    Quote Originally Posted by mrichartz View Post
    So it's 20* btdc?
    Click image for larger version. 

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ID:	436056

  3. #93
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    Quote Originally Posted by jaymalyon View Post
    Click image for larger version. 

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    So it's 2* advanced turn it clockwise 2 turns check it again should be 18btdc..
    '84 Checkmate Convincor
    Twin v6 closed deck Evinrude loopers
    Heavily ported,2.7 heads,cooling mods
    milled finger ported to match vertex pistons,
    All casting slag removed
    Sleeves in opposite so no idle reliefs
    drilled/relieved exh, lower and mid,
    148 psi comp,balanced pistons and rods, Holley red,Stuffed,77d jets 106 pullovers
    CDI 8500 digital ignitions ..Boyesen reeds..And more....

  4. #94
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    You should check the timing pointer with a piston stop first
    Last edited by powerabout; 04-12-2019 at 10:08 PM.

  5. #95
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    Oh so still can't get it over 3900?
    '84 Checkmate Convincor
    Twin v6 closed deck Evinrude loopers
    Heavily ported,2.7 heads,cooling mods
    milled finger ported to match vertex pistons,
    All casting slag removed
    Sleeves in opposite so no idle reliefs
    drilled/relieved exh, lower and mid,
    148 psi comp,balanced pistons and rods, Holley red,Stuffed,77d jets 106 pullovers
    CDI 8500 digital ignitions ..Boyesen reeds..And more....

  6. #96
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    Was motor High enough that it didn't have full load at the prop? If it's electrical or fuel.!?!
    '84 Checkmate Convincor
    Twin v6 closed deck Evinrude loopers
    Heavily ported,2.7 heads,cooling mods
    milled finger ported to match vertex pistons,
    All casting slag removed
    Sleeves in opposite so no idle reliefs
    drilled/relieved exh, lower and mid,
    148 psi comp,balanced pistons and rods, Holley red,Stuffed,77d jets 106 pullovers
    CDI 8500 digital ignitions ..Boyesen reeds..And more....

  7. #97
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    If you haven't replaced the plug wires. Those are solid core wires? I'd thoroughly check everyone end to end for continuity while gently twisting them. Better still pull the boots off each end, cut a 1/4" or more off each end and set the clip in new wire if it's still good and not burned or corroded, if you have enough slack to still make the distance, coil to plug.

  8. #98
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    Quote Originally Posted by powerabout View Post
    You should check the timing pointer with a piston stop first
    It is good.

  9. #99
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    Quote Originally Posted by mrichartz View Post
    Oh so still can't get it over 3900?
    Correct.

  10. #100
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    Oh you replaced plugs not wires too?
    '84 Checkmate Convincor
    Twin v6 closed deck Evinrude loopers
    Heavily ported,2.7 heads,cooling mods
    milled finger ported to match vertex pistons,
    All casting slag removed
    Sleeves in opposite so no idle reliefs
    drilled/relieved exh, lower and mid,
    148 psi comp,balanced pistons and rods, Holley red,Stuffed,77d jets 106 pullovers
    CDI 8500 digital ignitions ..Boyesen reeds..And more....

  11. #101
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    Quote Originally Posted by mrichartz View Post
    Was motor High enough that it didn't have full load at the prop? If it's electrical or fuel.!?!
    Could not get to full load. Still only hitting 3900 rpms

  12. #102
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    Have not changed plug wires.

  13. #103
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    Quote Originally Posted by jaymalyon View Post
    Could not get to full load. Still only hitting 3900 rpms
    Oh meant was prop able to slip being higher, making it easier for it to rev up in gear?
    '84 Checkmate Convincor
    Twin v6 closed deck Evinrude loopers
    Heavily ported,2.7 heads,cooling mods
    milled finger ported to match vertex pistons,
    All casting slag removed
    Sleeves in opposite so no idle reliefs
    drilled/relieved exh, lower and mid,
    148 psi comp,balanced pistons and rods, Holley red,Stuffed,77d jets 106 pullovers
    CDI 8500 digital ignitions ..Boyesen reeds..And more....

  14. #104
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    Did you pull the airbox and check all 6 carbs open?

  15. #105
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    Quote Originally Posted by powerabout View Post
    Did you pull the airbox and check all 6 carbs open?
    Yes. All 6 are synced and opening all the way at full throttle.

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