Recent content by Lou C

  1. Lou C

    Failed exhaust flappers

    There is a grommet that holds the pin in place maybe that melted from an overheat or just rotted out. I’d just keep using the OEM style ones. I’ve never had a water up the exhaust problem with mine using 2 different exhaust styles (OEM batwings & then the later 2 piece style).
  2. Lou C

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

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

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

  4. Lou C

    Been an interesting start to the boating season!

    Titanic
  5. 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.
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. 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...
  12. 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....
  13. 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...
  14. 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...
  15. 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.
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