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  1. Lou C

    2002 5,7 Mercruiser exhaust manifold keeps cracking - 5 times this summer

    Interesting video… The only manifolds I have used were OEM OMC (V6 batwings) changed every 6/7 seasons due to salt water use; and one aftermarket brand (Barr Marine) which replaced the batwings because they were long since NLA. I never had leaks with either brand and the Barr Marine units have...
  2. Lou C

    opinions....

    Good decision!
  3. Lou C

    Water in Oil

    If you have water in the oil but no water in the cyls then it can be the intake manifold gaskets which on the Vortec engines (‘96 and up) you have to be careful with; the torque spec on them is much lower (like half as much) as the older pre Vortec. Also if the intake manifold corrodes under the...
  4. Lou C

    Water in Oil

    That’s the reason why I stuck with a 160 stat on my 4.3. I tried a 140 because that’s what used to be advised for salt water but the engine took forever to warm up & there was actually condensation in the exhaust system. When I had the cyl heads off I didn’t see any real evidence of salt...
  5. Lou C

    5.7 EFI 2001 - clicking and

    good find and glad it was a simple fix.
  6. Lou C

    What gas do I use in my boat???

    Agreed, at the dock all they sell is 93 (good for them eh?!) if I could get 89 I'd use it, BTW there is still a sticker on the flame arrestor of my '88 OMC that says to use at least 89 octane gas. I think in heavily loaded marine engines, I'd want to err on the side of higher octane. The...
  7. Lou C

    What gas do I use in my boat???

    I run what they sell at the gas dock, E10 93 octane gas & add marine Stabil. No real problems over the years….
  8. Lou C

    Volvo Penta VST problems

    Hope you can still get one of those, the only other option (more expensive but better long term solution) is to convert to a 4 bbl marine carb. You can always get parts for Holley or Edelbrock carbs and they will run off an inexpensive Carter marine electric pump with the safety cut off harness...
  9. Lou C

    Water in Oil

    Was the boat imported from the US as a used boat? Could it have been in a climate that gets freezes before your ownership?
  10. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    PS That Boss 302, well one of my best friends dad was a chief mechanic at our local Ford dealer. He & I checked out a brand new 1969 Boss 302 in the showroom it was $4600 USD on the sticker. June 1969. Just finished 8th grade summer of the moon landing & Woodstock! Same color combination! What’s...
  11. Lou C

    My 84 4winns horizon 195 project.

    I forgot does yours have the balance shaft or not? The pre balance shaft units came with pretty soft front engine mounts I know on mine if you watch closely you can actually see a slight up n down movement at idle speed. Even with the “even fire” crankshaft….
  12. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    Temp & burning smell Check your manifold, elbow & rubber exhaust hose temps at idle and after running on plane. I have basically the same style exhaust but with a different impeller design. Idle : 90-100* F barely warm After coming off plane: 135-140… Engine temp: (w/160* thermostat) 160-165...
  13. Lou C

    My 84 4winns horizon 195 project.

    Check the engine mounts; could the engine be shifting slightly under torque?
  14. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    Love the Mustang. That’s a modern interpretation of the 1969-1970 Boss 302 that was sold to make it legal for Trans Am racing. I agree you should be about to run WOT without overheating
  15. Lou C

    My 84 4winns horizon 195 project.

    Wow what a great job and so glad the pix are working again so we can see the finished product. About the noise I wonder if it’s the exhaust flappers; when I changed my exhaust from the one piece batwings to the 2 piece conventional exhaust the flappers did make a bit more noise at times which...
  16. Lou C

    OMC cobra new long block back firing when first starting

    Or one of the intake valves is too tight and staying open allowing the flame front to travel back to the intake manifold
  17. Lou C

    Coil Question

    Here’s mine. 36 years old on the salt water mooring behind my house. Main thing is keeping the birds off it hence the 3 spinners and fake scary cat!
  18. Lou C

    Coil Question

    I tired to post a pic of the BID wiring diagram of that’s what’s on the boat….
  19. Lou C

    Coil Question

  20. Lou C

    Coil Question

    Also I did a bit of searching around, and if that engine has the same ignition system that both OMC and Volvo used in the '94 year, it is probably a Prestolite BID system which is basically an update of the old points distributor, keeping the centrifugal advance under the points plate but...
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