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  1. Lou C

    OMC 5.0L Wiring Diagram

    I have seen it posted up on this forum, you have to search....
  2. Lou C

    4.3L Mercruiser Milkshake

    https://www.crowleymarine.com/mercury-outboard/parts/16591_40.cfm https://www.crowleymarine.com/mercury-outboard/parts/16591_50.cfm https://www.crowleymarine.com/mercury-outboard/parts/16591_110.cfm so now they have a line of I/Os, that still have all the designed in disadvantages of I/Os vs...
  3. Lou C

    4.3L Mercruiser Milkshake

    check out what Merc charges for "their" 4.5 V6 parts compared to GM 4.3 parts prices (that they obviously copied)...that's special!
  4. Lou C

    4.3L Mercruiser Milkshake

    OMC used a Ford 2.3 liter inline 4 (from the Pinto/Bobcat and others) Ford built a 250 cu in six and a 200 cu in years ago and their best was a 300 cu in six None used in boats though I'd take one of those all cast iron Ford 300 cu in (4.9) liter beasts over any of the aluminum and plastic crap...
  5. Lou C

    OMC 5.0L Wiring Diagram

    take your Merc serial or model number and look it up in a Merc parts diagram
  6. Lou C

    Mounting transducer near outdrive?

    You could also just get a shoot thru the hull transducer, mount it in the bilge (if not cored) and use a GPS unit for speed. Won't get water temp though.
  7. Lou C

    OMC 5.0L Wiring Diagram

    If its got an ECM controlled efi system (probably throttle body EFI) and no ecm, there was a place that could repair these, maybe you can contact them & see if they have spares. Otherwise, see what intake you have, you might be able to simply convert back to a simpler (and better IMO) carbed...
  8. Lou C

    4.3L Mercruiser Milkshake

    It's good when these questions get asked because then we all learn.
  9. Lou C

    5.0 Quick drain Winterization

    A relative has one of the newer Merc 4.5 liter V6s with that quick drain system, we used it last fall and it seemed to drain a lot of water so thinking it was fine, then I manually filled with AF. And it was fine no problems in the spring. My thought for this year is to collect what drains from...
  10. Lou C

    Risers and manifolds at the same time?

    Yes that’s the one piece used from 1985-1990. 91 and up they went to the 2 piece units that both OMC & Volvo used. Looks like you got the first run of the 2 piece set up which is good because if you need to replace you can just get a Barr Marine aftermarket kit for like $725 or so… 10 years of...
  11. Lou C

    4.3L Mercruiser Milkshake

    that's the part that is tricky and not sure if the length of the driveshaft splines changed, or what might have happened...I guess if you could compare parts numbers that might tell you if the driveshaft was the same part number for both coupler designs, then it might work, otherwise, hard to tell.
  12. Lou C

    4.3L Mercruiser Milkshake

    What size boat are you putting the new engine in? If its a 17-19 footer then why not just get a late model Vortec 4.3 with a 4bbl carb? That will make the whole thing simpler and cheaper, you will need to use an electric fuel pump and a Vortec intake manifold but other than that it should be an...
  13. Lou C

    Risers and manifolds at the same time?

    top pic is batwings....look at the wall thickness of the cast iron between the water passage and the exhaust gas passage, left side is new right side is after 5.5 seasons in salt water... now look at the wall thickness of the 2 piece manifolds in the bottom pic....
  14. Lou C

    4.3L Mercruiser Milkshake

    One thing you need to find out is if both are one piece main seal engines. The flywheels are different and a coupler for the 2 piece main seal won’t fit the flywheel for the one piece & vice versa. So find out about that… Agreed those perimeter bolt valve covers are a clue. Later engines have...
  15. Lou C

    Risers and manifolds at the same time?

    After 10 years in salt even with flushing I’d want to at least inspect those & do the acetone test. Bad manifolds are the #1 inboard engine killer because they look fine on the outside but… It’s REALLY a shame to lose an other wise good engine over that. On the batwings the cast iron between...
  16. Lou C

    Risers and manifolds at the same time?

    If those 1988 batwings are original even with flushing you’re on borrowed time. If your keeping the boat consider the upgrade I did 5 years ago, Barr 2 piece layer style exhaust
  17. Lou C

    Intake manifold

    That seems to be a difference between the GLM and Barr exhaust because the Barr set up runs about the same temp as the batwings did. Both idled at approx 95-100*F depending on where you measured it, and the hottest they ever get is about 125-135*F after coming off plane. The starboard side being...
  18. Lou C

    5.7L MerCruiser Bravo III under water...repairable?

    It certainly could be if it leaked oil and gasoline into the water. Was the boat insured? If not that's a situation you want to stay away from. Once you become the owner you could be reponsible. remember no good deed goes unpunished lol. I would not get involved. Oil and gas leaking from an old...
  19. Lou C

    Volvo 5.0 gxi Stalls at idle. Hard start.

    What I wish was certified for marine use was the old GM points distributor with the window in the cap. The points and condenser were mounted on one plate, simple to replace, and you set the dwell with the engine running via an allen tool. Elegantly simple and worked great. Even on my old...
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