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  1. #1

    Default 1985 3.8 L OMC Exhaust Manifolds

    Holy crap these things are impossible to find......engine runs strong, but it looks like both manifolds have been half *ss welded or JB welded at some point.....please help me find these manifolds...or suggestions on an alternative, I really like the 3.8L and it runs great, just trying to fix up a few little problems.
    MP

  2. #2
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    Default Re: 1985 3.8 L OMC Exhaust Manifolds

    You tried this site, doug russel marine, E-bay, E-basic?

    I thought i just saw them on e-bay, maybe im wrong, won't be the first or last time

    Welcome aboard!

  3. #3

    Default Re: 1985 3.8 L OMC Exhaust Manifolds

    nothing from noone......thats how it goes I guess I always end up with the oddball. Any conversion ideas out there.
    MP

  4. #4

    Default Re: 1985 3.8 L OMC Exhaust Manifolds

    can you put a 4.3 mercruiser manifold on? It has the same gasket and bolt pattern, is there a clearance issue with the valve covers....I would just have to figure out how to get from the center riser to the y at the drive.
    MP

  5. #5
    Fleet Admiral Gary H NC's Avatar
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    Default Re: 1985 3.8 L OMC Exhaust Manifolds



    1981 ChrisCraft 210 Scorpion K,175 Johnson SeaHorse

  6. #6

    Default Re: 1985 3.8 L OMC Exhaust Manifolds

    Since these have the center rise, how would I get back to the outlet....would this work?..........
    http://www.gates.com/brochure.cfm?br...cation_id=5249
    Thanks
    MP

  7. #7
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    Default Re: 1985 3.8 L OMC Exhaust Manifolds

    Quote Originally Posted by captmorgan23 View Post
    Since these have the center rise, how would I get back to the outlet....would this work?..........
    http://www.gates.com/brochure.cfm?br...cation_id=5249
    Thanks
    MP
    did you see these?
    http://www.**************/category.do?no=14136
    88 Larson Citation DC 175
    165HP 3.7L I4 (470) alpha 1

  8. #8

    Default Re: 1985 3.8 L OMC Exhaust Manifolds

    What would this do.......does this make it a closed system and just the exhaust go to outdrive.

    http://www.**************/product.do?no=89274F

    MP

  9. #9

    Default Re: 1985 3.8 L OMC Exhaust Manifolds

    Quote Originally Posted by abj87 View Post
    I did see those....and am still trying to get my head around how it would work.
    Here is a good pic of my exhaust manifolds-

    http://www.**************/product.do?no=89274F

    Oh and by the way....you people are incredibly helpful and gracious...thanks for your time and expertise.
    MP

  10. #10
    Fleet Admiral Gary H NC's Avatar
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    Default Re: 1985 3.8 L OMC Exhaust Manifolds

    Oh...the old log style..pre-Cobra,
    Look at these,
    http://bpi.ebasicpower.com/c/OMC8A/Manifolds+for+OMC

    Still not sure if those will work. Call Ebasicpower,they are really helpful on the phone.
    I have bought from them at least 20 times.


    1981 ChrisCraft 210 Scorpion K,175 Johnson SeaHorse

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