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  1. Lou C

    Merc 350 mag mpi HELP! 200°

    Technically speaking they are exhaust elbows. A riser is a spacer that goes between the manifold and elbow if you need more height on the exhaust to prevent the exhaust backing up into the cylinders. That depends on the static water line of the boat (how high the water is in the exhaust Y pipe...
  2. Lou C

    Merc 350 mag mpi HELP! 200°

    However your dash gauge temp is still too high… Here’s mine
  3. Lou C

    Merc 350 mag mpi HELP! 200°

    In those pix you appear to reading the temps of the exhaust manifolds not the engine. If that engine uses the warm manifold system they will be somewhat warmer than the engine because the manifolds don’t get cooling water till the engine thermostat opens. I’ve found that the best place to take...
  4. Lou C

    Exhaust Bellow

    That’s the OMC Cobra version. It’s supposed to be like that to reduce back pressure. The VP version has holes in it too but smaller ones. You can use that with no problem.
  5. Lou C

    I think I will go electric for my next new car ...

    Wonder if the Tesla driver with Cali plates had to buy the gas generator in Nevada lol.
  6. Lou C

    I think I will go electric for my next new car ...

    I tell my enlightened friends with electrics if they have lithium ion batteries you might not want to park that little green wonder in your garage. Here's my idea of a green vehicle....
  7. Lou C

    Converting to carburetor from mpi 350 mag

    Exactly If you know carbs you can keep the boat going for a LONG time for little money. EFI is nice for for cold starts & smooth running when cold other than that I don’t think the huge cost penalty of EFI is worth it. Don’t think that changing to a carb will add power. Best thing about...
  8. Lou C

    Converting to carburetor from mpi 350 mag

    If I were doing this (and I greatly prefer carbs for older boats, can’t be beat for cost of repair & maintenance) I’d be looking to sell off all the usable EFI stuff to defray the cost of conversion.
  9. Lou C

    Running boat on land with no prop?

    If you get the muffs I posted your trouble with running on the hose, will be finished. They are the best that I've tried. Here they are on my OMC Cobra, the way to tell they are working well is the amount of water that is exhausting from right in front of the large anode on the lower unit.
  10. Lou C

    5.0 Quick drain Winterization

    Manual drain & back fill is easy and doesn’t waste AF.
  11. Lou C

    Converting to carburetor from mpi 350 mag

    https://www.mercruiserparts.com/bam/subassembly/31745/2691/110 do you have this intake manifold? I think then you'd need a new 4 bbl intake for both engines, you can use a spread bore cast iron intake or aluminum square bore as long as its a marine unit, that gives you a choice of any 4bbl...
  12. Lou C

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

    what makes me laugh sometimes is when something is touted as "new, and improved" but in practice proves to be anything but....example... direct gasoline injection vs port fuel injection...for a small increase in efficiency, owners are having to put up with problems that they never had with...
  13. Lou C

    Running boat on land with no prop?

    yes
  14. Lou C

    Running boat on land with no prop?

  15. Lou C

    Aq271 fresh water cooled Manifolds

    I keep my boat in salt water all season (6 months) only flush at the end of the season and fill with antifreeze with corrosion inhibitors when winterizing. I’ve never had a failure and have changed them usually @ 5-7 seasons (OEM batwings). Don’t know how far I could have gone to the point of...
  16. Lou C

    Running boat on land with no prop?

    Well I’ve never run my Cobra in a trough but when I launch it the ramp is shallow and the top of the outdrive is just barely submerged (impeller housing in these is in the upper gear unit); it always primed I never had a problem with it running hot when launching. I do run it on the muffs at...
  17. Lou C

    1991 OMC 4.3L HO SPITFIRE TO EST CONVERSION. NEED HELP.

    I would contact CDI electronics in Alabama. They make ESA modules for Cobras and I think the do make one for the 4.3 EST combination. I got one of theirs for my 4.3 that still has the points distributor after the original ESA quit working. This one will work with points or Petronix but not EST...
  18. Lou C

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

    I learned about this via a neighbor, we keep our boats in a harbor that our neighborhood backs up to. Up here in Long Island everyone pulls their boat for winter if they are not in a marina with bubblers to keep the water from freezing. Well this guy had a wooden cruiser and one winter he didn't...
  19. Lou C

    Faria Gauges

    Thanks for posting that, I’m sure it will help someone with the same issue
  20. Lou C

    OMC 5.0L Wiring Diagram

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