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  1. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    Lol I already ordered new elbows ... but that doesn't mean I have to use them now .... also the surface on the manifold's should be pretty good since I was able to seal them with a 1/4 inch peace of aluminum an put 40 psi to them right?
  2. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    Her are a few pictures from one of the manifolds and riser
  3. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    Ok quick question on manifolds.. so I looked them over and did not see any reason why they would be faulty . So I have pressure tested them at 25 psi and I'm getting no leak down. It does however look like the Riser gasket was leaking to the inside and the outside .. could the gasket have...
  4. M

    Engine alignment ,just got the tool. Pics posted

    I would venture to say that the coupler that was on the motor in the boat yard stayed on the motor when it was placed in the boat and it possibly wasn't any good
  5. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    Just got off the phone with Michigan Motors and it was verified that there was only one 14 inch flywheel for the 4.3 from 87 and up 1 piece seal
  6. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    Both flywheels are the same size and they both came from engines with a 1 piece seal. I do not believe OMC ever had the triangle shaped coupler so I believe ( do not know for a fact ) that this is why its not drilled. and according to Michigan Motors there its the same one but I'm going to call...
  7. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    Also should I leave the ignition system that came with the 87 omc engine or should I replace it with the mercruiser ignition from the 95 engine
  8. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    The flywheel that came on th 87 ( omc engine ) won't work with the mercruiser coupler because it isnt drilled and taped for the triangle style coupler I have .. but I can use the flywheel from the 95 mercruiser engine according to Michigan Motors it was the same from 87 on...
  9. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    Wow Scott that is a lot of information compiled on the 4.3 Thanks
  10. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    yeah looks like you went through it with that engine
  11. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    Yes the exhaust manifolds will be replaced as I'm sure that was the root of the issue . I believe that there was a balancer difference between the years. will the coupler from either of the motors work ?
  12. M

    Replacing 95 merc 4.3 with 87 OMC 4.3

    Ok I just purchased a 95 marada with a Mercruiser 4.3. The engine has water in the oil and the guy I got it from said when he backed it in the water that engine was locked up. I'm thinking it was hydro locked. None the less, it's been a year with water in oil and possibly cylinders, I have a...
  13. M

    Johnson 55 hp year i.d.

    AHH gottcha
  14. M

    Johnson 55 hp year i.d.

    Did they make a 55hp in the 80's
  15. M

    1986 35Hp Mercury no fire

    Just an update it was the switch box Thanks for all the suggestions
  16. M

    Question on year and Idle mixture screws for XR-6

    Yeah and there supposed to have caps on them that prevent you from adjusting more then a 1/4 turn one way are the other
  17. M

    Question on year and Idle mixture screws for XR-6

    Yup that’s why I was thinking 95 because it’s dated 3 13 96 but the welsh plug in the head doesn’t have a serial number on it so I was thinking it’s a replacement power head. Still confused with the manual not having any information on idle mixture screws adjustment.
  18. M

    Question on year and Idle mixture screws for XR-6

    I got it with an issue not going over 2500 rpm's I found 1 of the switch box's was bad so I'm waiting on a new one.. but the guy that I got the boat from said his buddy turned some of the idles mixture screws so that's what got me lo ok looking into it ... also 92 ? I was thinking around 95..
  19. M

    Question on year and Idle mixture screws for XR-6

    Ok first ? can anyone tell me the year of this XR-6 engine I believe its an 1995 but just wanted to confirm.. The serial number is OD167181.. The next ? looking at the manual there's no mention of adjusting the idle mixture screws it states to set at 1 1/2 turns out +/- 1/4 turn and that they...
  20. M

    Help confirming water pump part number for my mercruiser engine.

    Going to need the drive serial number in order to confirm fitment. This water pump impeller was used on the R/MR and ALPHA ONE Sterndrive
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