Search results

  1. Lou C

    1988 Bayliner Capri with a 2.3L OMC Ford cobra

    I've had a Cobra for approx 20 years, they are good when set up right and maintained properly. I would use OEM parts for impellers, shift cables and driveshaft bellows. Check on this site to see if they sell OEM parts for OMC if not, there are a few other sites that sell OEM parts. OMC impellers...
  2. Lou C

    1988 OMC 4.3 2V - Leaking Manifolds

    If they are paper gaskets I would use sealer if they are composite gaskets with the silver backing they may not need it. I suggest removing the paint from the sealing surfaces. You bought them from Marine Engine Parts AKA Lighthouse Marine? They are local to me (Riverhead Long Island NY). Give...
  3. Lou C

    My poor old Buick took a hit

    Same for me. One day I’d like to have a GM (77-78 Cad Fleetwood or 94-96 Impala SS) and a FoMoCo or 2 (Crown Vic or 87/89 Lincoln Town Car). I grew up with a ‘72 Impala 350 and a ‘75 Olds Delta 88 350. Todays cars disgust me.
  4. Lou C

    Sierra Marine Head Gaskets

    I used Fel/Pro when I replaced the heads on my 4.3, they sell a marine gasket kit for the pre-Vortec 4.3s, I’m not sure what they sell for the V8s…had good luck with theirs…
  5. Lou C

    Overheated 1989 4.3 OMC questions...

    I figure it saved me about $3,000 in maintenance over 10 years. My boat has not been back to a mechanic since 2006. Ive done all of it including winterizing tune ups, carb rebuilds, drive r & r & shift linkage adjustment. Also did a top engine overhaul (installed reman cyl heads) & the exhaust...
  6. Lou C

    Overheated 1989 4.3 OMC questions...

    I bought it about 10 years ago. I think I paid about $175. Stumpy’s Fab Works. If you’re going to own I/O boats a long time it’s worth it.
  7. Lou C

    Overheated 1989 4.3 OMC questions...

    The slits on the exhaust bellows are normal, to reduce back pressure. As long as your 4 exhaust ports are open on the batwings, you should be OK. They are small so they clog easily. Good thing you changed the flappers. You should be pulling the drive at the end of each season. I built a wood...
  8. Lou C

    4.3 Gl over heat

    The Volvo SX-A is a different design than the OMC Cobra & Volvo SX both of which have a similar design. Post the question up in the Volvo section.
  9. Lou C

    1989 5.7 omc propeller not spinning

    When you refill these be careful…the official way to do it is to replace all 3 gaskets and reinstall the bottom most plug. Put the large dip stick plug in the top hole but do not thread in yet. Hook up your gear oil pump to the second hole up from the bottom. Slowly pump in gear oil (it should...
  10. Lou C

    Overheated 1989 4.3 OMC questions...

    The Barr manifolds I used were very well cast & sealing surfaces perfect. They do need a better coat of paint to not rust in damp salt water environments; I brushed on a coat of Rustolium….
  11. Lou C

    4.3 Gl over heat

    And keep in mind how different marine cooling systems are compared to auto cooling systems….an auto system is closed and runs on antifreeze with corrosion inhibitors…it can run without maintenance with long life coolants (do check for leaks & worn belts) for many years Marine systems if open or...
  12. Lou C

    4.3 Gl over heat

    Average life of a cast iron exhaust system in salt water is 5-7 years. This depends on salinity of the water & how often you flush the system.
  13. Lou C

    4.3 Gl over heat

    Next is your exhaust manifolds & elbows. I bet they are corroded inside and restricting water flow. Time to pull them & inspect. Here's what new looks like for the manifold:
  14. Lou C

    1988 OMC 4.3 2V - Leaking Manifolds

    Here's mine when I was trial fitting all the parts. an easy way to install the manifolds is to take a bolt from the kit and go to the hardware store and buy 2 identical pitch but longer bolts. Cut the heads off and cut a slot in the stub. Thread one the first and last holes in the cyl head for...
  15. Lou C

    Popped through the intake.

    Is that all from the intake gaskets? Mine blew the head gaskets 2 years after an overheat but it didn't look that bad, even though it was in salt water. Judging by the rust in the intake ports it is possible an intake valve could be hanging open. When I pulled out all the lifters the cam looked...
  16. Lou C

    1988 OMC 4.3 2V - Leaking Manifolds

    Those go on dry no sealer...
  17. Lou C

    5.0 GXI Gaskets

    The things that have to be marine grade are head gaskets & core plugs & that’s only if you use raw water cooling.
  18. Lou C

    Marine Carpet Glue For Wood Decking

    My part of Long Island NY has some of the highest property taxes in the country I can tell you it will never happen till I leave. They will take the last nickel you have.
  19. Lou C

    Overheated 1989 4.3 OMC questions...

    Down pipe is part # 19 above. You can see all the components of the 2 piece system in this diagram. OMC & Volvo used this basically identical system. Some parts you won’t need with a pre Vortec V6 (pre 1996) are the one way check valves (part # 5) that are screwed into the exhaust elbows; these...
  20. Lou C

    Overheated 1989 4.3 OMC questions...

Top