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  1. Lou C

    88 OMC 4.3L V6 - Sitting for about 10 Months - Question

    Those are the best muffs I have found….
  2. Lou C

    88 OMC 4.3L V6 - Sitting for about 10 Months - Question

  3. Lou C

    Been an interesting start to the boating season!

    Titanic
  4. Lou C

    Lower Unit Gear Oil Change while on lift

    Better to do it all at once, in a place where you have everything you need. I am lucky I have a local ramp and can pull the boat by myself.
  5. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    You could have done that, a normal 5.0 Ford V8 out of a Mustang or F-150 pick up is basically what you have. About adding closed cooling, you can if the internal cooling passages are clean and not rusted, but not if it has been run in salt or brackish water, because of the way cast iron rusts...
  6. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    On the ignition switch: terminals: B=battery, red wire should show battery voltage when battery switch is on I=ignition, purple wire should show battery voltage when key is turned to ignition on (1st notch from off) S=start, yellow red wire, this should get battery voltage when you turn it to...
  7. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    here's the missing attachment # 60 is the auto choke for the Holley carb BTW a little OMC trivia that might not apply to yours: I learned this when I replaced my OEM alt with an ARCO On some OMC harnesses, there was excessive resistance in the Sense circuit. What can happen then is that the alt...
  8. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    Well the raw water cooled system is simpler for sure. Less to go wrong. However, over time what happens especially in brackish or salt water, you get leaks around the head gaskets (corrosion) water in the oil and eventually have to do a top end engine overhaul. I wound up doing this on mine in...
  9. Lou C

    NEED A VP PROS OPPINION!

    In the first post you said it wasn't used in fresh water then you said 400 hrs fresh water which is it? If used in brackish or salt, for sure you should be inspecting the exhaust elbows and manifolds, in salt water they require replacement about every 5-7 years. So where the boat was used, does...
  10. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    2 Reasons: when water is hotter than approx 160*F, the minerals can precipitate out of suspension and clog the cooling system, especially calcium. This is a bigger problem in salt water or even fresh water with a lot of dissolved minerals. The other reason is that these open cooling systems...
  11. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    part # 60 is the auto electric choke if you have one. Only the Holley carbs used them as far as I know....
  12. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    That part for the thermostat housing, is an adapter that was used on the Ford engines, not used on the GM engines. Sometimes you can find them on a site called NLA Marine or try Ebay When replacing OMC thermostats, I always used a coating of OMC gasket sealer (or Permatex Aviation) on the...
  13. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    here are the connections on both the OEM Prestolite and the newer style Mando alternators. If you have a carb with an electric choke it gets powered off the AC tap terminal. The output B+ is connected with a heavy gauge wire to the B+ terminal on the starter solenoid (same one that the battery...
  14. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    That’s how the flappers are, not a perfect fit, if the old ones aren’t melted from a past overheat leave ‘em be. If so change em. The alternator you have is probably the top left one in the diagram above. Same as mine.
  15. Lou C

    5.7 vortec motor starts ,then bogs and dies

    When my OMC Cobra interrupt switch started sticking it did exactly that. Other things to check…is the auto choke getting pulled open slightly by the pull off or vacuum break? Does it close fully for a cold start? Does it open fully? Another long shot I recall reading about was that on some...
  16. Lou C

    Trailer axle

    Champion is excellent I had them make me 2 axles over the past 20 years. However theirs are custom made to order so you might have to wait. Trailer Parts Depot is another good source they have a lot in stock, it all depends if what they have fits your application. Your other option is to see if...
  17. Lou C

    Lower Unit Gear Oil Change while on lift

    I’d pull the boat & do the work on land. Either you will get gear oil in the water or drain plugs or both lol. I once “thought” of pulling an exhaust manifold with my boat in the water….thought some more….and pulled the boat!
  18. Lou C

    Taking my lake toon to the beach

    Just run it in the lake to flush the engine. If your trailer is painted make sure to flush it throughly. I’m in 100% salt water. We are used to it.
  19. Lou C

    This is one reason you lower the out drive...

    I have had to run my drive almost all the way up when leaving/returning at low tide and while you might hear a bit of noise, I have never had that happen and my u joints are original. Something else went wrong there. I don't see a lot of corrosion either. What did the driveshaft/u joints look...
  20. Lou C

    Gas and Ethanol

    The only exception to draining that I thought of is the older style Briggs mower engines with the carb on top of the metal tank. On these if you run them out of fuel the tank starts to rust inside, so it is better actually to keep these full for storage. I have one of them with the Pulsa-jet carb.
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