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  1. nola mike

    Lower Unit compatibility question

    🤷‍♂️ As long as the op knows the difference. People will frequently say "lower unit" when talking about the entire drive.
  2. nola mike

    Outdrive Alignment

    A. The alignment tool will bottom out, you can't insert it too far. B. Your gimbal bearing probably isn't out of alignment your engine is. Did you adjust the mounts at all? C. "Not hitting the drive hard enough". You can hit the drive as hard as you want, but it won't align it.
  3. nola mike

    Lower Unit compatibility question

    He never responded to @Bondo about what exactly he was replacing, if "lower" meant "stern drive" then he'll need to reprop. And since he specified the gear ratio... $250 gets me complete out drives around here. I'd be wary of just buying the lower anyway for fear of what happened to the upper.
  4. nola mike

    Lower Unit compatibility question

    Assuming you're coming from a 1.84 drive, you'll probably need to reprop. You should have some wiggle room if you have a 19 now
  5. nola mike

    Lower Unit compatibility question

    What pitch prop do you have on there now?
  6. nola mike

    Nola Mike's 3.7/470 --> 4.3L swap thread

    Alright, boating season not quite done yet! I think my tach wasn't adjusted correctly. I think it was set for v8, but the v6 setting was between clicks on the adjustment, if that makes sense. Got it so that it now reads consistently 150 rpm higher than the digital tach. Today I hit wot at 4750...
  7. nola mike

    Mercruiser 470 low compression on cylinder #4

    So... Your next step should be a leak down test, maybe you can see where you're losing compression. It does sound like rings--if you had a water leak into #4 then you definitely could have damaged the cylinder. you half assed the push rods, so tough to totally rule that out, but didn't sound...
  8. nola mike

    Mercruiser alpha one small amount of water in shift cable housing

    What are you working on? A1G1 drive, if it's never been done needs the shift shaft bushing and seal replaced.
  9. nola mike

    Alpha one Gen 2 u-joints

    Why did you remove everything from the input shaft?
  10. nola mike

    Is this the aluminum head 470.

    There's no such thing as a reliable 30 year boat with an unknown history.
  11. nola mike

    Is this the aluminum head 470.

    Agreed, you'll still get a performance boost over what you have.
  12. nola mike

    Is this the aluminum head 470.

    No? How much?
  13. nola mike

    Is this the aluminum head 470.

    Get a 3.0 and lose 40 hp. What's the upside?
  14. nola mike

    Is this the aluminum head 470.

    Yeah, 6 month swap being the operative term. I've been completely unimpressed with the 4.3 so far in terms of everything except refinement. Definitely not worth the effort unless I can get some performance gains out of it. If it gets me up on a slalom then I'll be happy, but I'm not optimistic...
  15. nola mike

    For discussion, mercruiser v6 , rochester, edelbrock

    What would make the pressure all of a sudden jump on a mechanical pump? I'd still think of carp in the needle seat, would clean it out and run it in a remote tank to check.
  16. nola mike

    No Power at Ignition or Instrument Panel

    As always, since you didn't specify what you're working on, we'll assume that your wiring is identical to mine. You should have a red/purple wire to the ignition switch. The purple supplies the gauges and the ignition when the key is in the run position. So check power coming into the switch...
  17. nola mike

    Is this the aluminum head 470.

    Meh, don't listen to the haters. If the donor is in good shape I'd go with that. Yes, the 4.3 is a better engine probably. But the 3.7 is pretty damn good overall. The quirks are less important in a 30 year old engine. That donor already has the alternator. Can't tell the hx size; an 89 should...
  18. nola mike

    1989 180/3.7LX 4 bbrl Mercruiser Alpha One drive Questions

    Guess I'm not clear what we're talking about. The driveshaft to the gear housing isn't hollow. The lubrication for the lower/gear housing is supplied by the passage between the 2 halves of the outdrive.
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