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  1. nola mike

    Engine swap, OMC to mercruiser

    I got one on my boat. Same engine basically as what you have now. My feeling is a truck engine will be better than a used marine block.
  2. nola mike

    Engine swap, OMC to mercruiser

    Whole engine, all accessories, wiring, controls, outdrive, transom bits, everything. You'll need a donor boat with a rotten hull.
  3. nola mike

    Engine stalls when put in gearMy boat is a 1979 27 ft Carver Monterey Mercruiser 228 305 4barrel - Alpha Drive The engine stalls when shifting gear

    Unless you upgraded your running gear, you don't have an alpha--likely an MC-1 The SIS should only activate coming out of gear when on the water running. "A little stiff" is a bad cable. There should be practically no resistance
  4. nola mike

    Miss firing Merc 7.4 mpi L29 2000 2855 Ciera SB

    I'd probably call the merc an open loop system, since the pcm is operating on a fixed maps based on some sensor input. It just doesn't ever go into closed loop. But yeah, he isn't ever switching into closed loop
  5. nola mike

    Starter Wiring, 4.3L Mercruiser

    Also might have a mechanical fuel pump
  6. nola mike

    Miss firing Merc 7.4 mpi L29 2000 2855 Ciera SB

    Admittedly ignorant about the merc systems, so just throwing out my ill informed thoughts... IAC shouldn't have huge effect once your rpms are up. You can check the operation with a scan tool, number of counts. An open loop system kind of limits your ability to tell whether you're running...
  7. nola mike

    Miss firing Merc 7.4 mpi L29 2000 2855 Ciera SB

    You've mentioned closed/open loop a few times...afaik your engine doesn't use a closed loop system... But are you no longer getting a code 14?
  8. nola mike

    Mercruiser alpha one gen 1

    Need a lot more info on what's going on, but no, the gear ratios on a v8 won't work on a 3l most likely. Maybe a 5.0 using a 1.62 would work on a 3.7, but in general the typical 1.47 wouldn't work with the typical 1.94ish on the 3.0l
  9. nola mike

    Miss firing Merc 7.4 mpi L29 2000 2855 Ciera SB

    So you tested the wiring as well?
  10. nola mike

    Starter Wiring, 4.3L Mercruiser

    Ah well, I have a relay in my setup, so would work fine. Unless people are specific on what they're working on, every engine is mine 😁
  11. nola mike

    Starter Wiring, 4.3L Mercruiser

    Why not wire the fuel pump starting circuit off the yellow/red slave solenoid output lead?
  12. nola mike

    Engine swap, OMC to mercruiser

    Are you talking keeping the omc setup? If so, yes long block is easiest. Otherwise pulley to prop Merc is the way to go. Anything else and you'll be chasing stupid random parts.
  13. nola mike

    Miss firing Merc 7.4 mpi L29 2000 2855 Ciera SB

    You had a code, doesn't seem like you did the troubleshooting for it.
  14. nola mike

    Boathouse Length vs Boat Length

    Can you back the boat in?
  15. nola mike

    Miss firing Merc 7.4 mpi L29 2000 2855 Ciera SB

    Looks like a pretty good flow chart. Bad ECT would cause it to run rich, not sure why it would only affect one side though. Does it miss only when warm?
  16. nola mike

    2.00 ratio Alpha one gen 2

    Different... Do you have twins? If so, one should be counter rotating, which is done in the gear housing. Any of the uppers will mate with the lowers, with potentially a small difference in overall drive ratio. Normally this isn't something you'd notice, but if you have twins, a small difference...
  17. nola mike

    2.00 ratio Alpha one gen 2

    Never understood a hunting gear set. In addition to the difficulties of reassembly, I'd think that you'd always want to spread the wear around to all the gears equally
  18. nola mike

    3.0 mercruiser ran for 5 min good. Then Just died?

    I mean, sure sounds like the float based on your previous posts. Have you tried tapping the carb while it's running to see if that helps?
  19. nola mike

    Merc 470 cam seal

    If you're going through the trouble, there is zero reason not to replace the seal as well. Do you really want to do the job again if the seal was bad?
  20. nola mike

    2.00 ratio Alpha one gen 2

    If it hasn't been mentioned already, you can just check the serial number of your drive and erase all doubt. But in general, on a 3.0, you'll want a general 2:1 ratio. 1.94., 1 98 isn't going to make a difference
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