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  1. Replies
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    I honestly dont know if I need the Q plugs. 1995...

    I honestly dont know if I need the Q plugs. 1995 Johnson 30hp 31.8ci 2cyl

    Sent from my C811 4G using Tapatalk
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    3,814

    Champion QL77JC4 (OEM). Ill pick up some new...

    Champion QL77JC4 (OEM). Ill pick up some new plugs to try with the 61. I did shut down quickly from wot. Thanks

    Sent from my C811 4G using Tapatalk
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    Plugs and jetting

    I wanted to get a second opinion on my plugs. Running wot for 10min plug #1 is dry and plug #2 is barely wet. Both plugs are basically the same brown color. If it matters it was 80*F and I generally...
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    When you say one size do you mean going from 59...

    When you say one size do you mean going from 59 to 58 or from 59 down to next available size?

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    9,472

    Factory jet is 59 for my carb but with 25hp...

    Factory jet is 59 for my carb but with 25hp intake it didn't like decelerating too fast back to idle. so based on your experience it sounds like 60 or 61 would be best?

    I was going to try a 63...
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    Have you guys ever messed with the high speed...

    Have you guys ever messed with the high speed jets? In my 28hp flat top carb (same dimensions as choked 76+ 30/35 carb) it came with .059" (59) jet but the flat top 30hp carb come with .067" (67D). ...
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    2,106

    OMC carbs. Feed tube removal?

    Anybody have any tips or tricks on removing the brass idle and high speed feed tubes that go through the venturi? Im going to bore my carb out but haven't figured out the best way to remove them....
  8. Thread: Bypass cover

    by Buddy S
    Replies
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    3,773

    After further investigation, it appears the...

    After further investigation, it appears the difference is a small hose fitting above the fuel pump. I feel more relieved now. Thanks for the explanations!

    Sent from my C811 4G using Tapatalk
  9. Thread: Bypass cover

    by Buddy S
    Replies
    7
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    3,773

    The part numbers are different between the 1995...

    The part numbers are different between the 1995 20-25hp and the 1995 30-35hp. Id rather not order one and pull mine off just to find its identical. Or has a dimension that can be easily modified.
    ...
  10. Thread: Bypass cover

    by Buddy S
    Replies
    7
    Views
    3,773

    Should there be a big enough difference to be...

    Should there be a big enough difference to be worth swapping the 25hp cover for the 30hp cover?

    Sent from my C811 4G using Tapatalk
  11. Thread: Bypass cover

    by Buddy S
    Replies
    7
    Views
    3,773

    Anybody? Sent from my C811 4G using Tapatalk

    Anybody?

    Sent from my C811 4G using Tapatalk
  12. Thread: Bypass cover

    by Buddy S
    Replies
    7
    Views
    3,773

    Bypass cover

    Could someone explain what the bypass cover on an omc outboard does? all I can figure is that it is a vacuum chamber for the fuel pump? I noticed the 25hp and the 30hp 31.8 (in 1995) were different...
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    9,472

    Thanks so much for that info! My carb is a newer...

    Thanks so much for that info! My carb is a newer (1995 28hp ) carb but has the same dimensions as the 76+ w/choke. I wonder why they changed diameters between "76+ w/choke" and "80's".

    Sent from...
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    Just measured the throat at 1.5 and venturi at...

    Just measured the throat at 1.5 and venturi at 1.35 of the 28 hp carb. Do you know what he 30hp carb diameters are? I couldn't cross reference the carb body but i thought on the 30hp carb it was...
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    9,472

    1995 OMC 25 mods 31.8

    Ive been researching for a while and decided to bite the bullet because it seems to be worth the upgrade. So I found a 28hp flat top carb for $85 and order the factory 30hp jets for it because I...
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