Search results

  1. Eric 3.7LX Alpha 1

    Need help with my 3.7l mcm 180

    Couple of things.... first, if you haven't already, pull the outdrive off, it may be seized not the engine. Don't order any internal engine parts if your going to rebuild it yet. You have to have it looked at first by a machine shop before you order things like main and rod bearings and piston...
  2. Eric 3.7LX Alpha 1

    Inspection cover leak 1984 470

    You can do a search for Mahle # PS33264 for the gasket. It looks like it's backordered a bit but you can get just that one gasket.
  3. Eric 3.7LX Alpha 1

    5.7 merc runs only when gas poured in carb

    Click on this write up from the Adults Only Sticky at the beginning of this forum: https://forums.iboats.com/threads/how-to-testing-your-boats-fuel-system.278553/
  4. Eric 3.7LX Alpha 1

    84 Mercruiser 140 water leak behind and below starter

    This thread is 10 years old. The original poster hasn't been on here in 4 years. Start your own new thread with info for your engine and drive rather than comment on this one.
  5. Eric 3.7LX Alpha 1

    IMPELLER IN OUT DRIVE

    If your using a computer, you can make the text size larger on your screen. No need to struggle... press and hold down the CTRL button and the + sign button at the same time. You can do this more than once to continue larger... To switch to smaller size use the - button instead.
  6. Eric 3.7LX Alpha 1

    Putting outdrive back in

    Great Minds ;)
  7. Eric 3.7LX Alpha 1

    Putting outdrive back in

    Here's a video achris made a while back, might give you some tips:
  8. Eric 3.7LX Alpha 1

    1981 MerCruiser Outdrive Water Pump

    The older MC-1 will have a pre-load pin as shown on the right. The newer Alpha One lower won't have the pin (left side). The lower halves are interchangeable (as a complete unit). You can mate a MC-1 lower to an Alpha One upper and vise versa. The anti ventilation plate is also rounded on the...
  9. Eric 3.7LX Alpha 1

    1981 MerCruiser Outdrive Water Pump

    I'm not an expert but in searching the 888, it was in production from '71 to '77. The serial number range for them was 3106717 to 4782329. The outdrive would be a MC-1 model. When you separate the halves of the drive, the top of the vertical shaft of the lower half will have a pre-load pin at...
  10. Eric 3.7LX Alpha 1

    Mercruiser 170 Pertronix Ignitor no spark

    Voltage should have been over 13 when running. How many wires does the new alternator have going to it.
  11. Eric 3.7LX Alpha 1

    Help with charging system?

    Yeah, too long. Life got busy for a while and the boat took the back burner. It's time to get it splashed again. Oh boy, lots of maintenance to catch up on.. I do enjoy reading these posts again. You see Stonyloam on here at all?
  12. Eric 3.7LX Alpha 1

    Super stuck gimbal bearing in Mercruiser Pre-Alpha -- is there a clip?

    Just a gimbal bearing no snap ring clip there. You do have a lot of corrosion there, I hope your bellows seals okay. Down the bottom from about 5 o'clock to about 8 o'clock that flange looks thin. How rusted were the universal joints? That thing is going to need some cleaning before gluing.
  13. Eric 3.7LX Alpha 1

    Help with charging system?

    This is what I have for a wiring diagram for a 3 wire alternator: edit.. I just noticed in your signature you got rid of the 3.7? so this is for the 4.3?
  14. Eric 3.7LX Alpha 1

    Replacing mercruiser 485

    These engines never came with a belt driven alternator. They used a stator to charge the battery which sat behind what looks like the harmonic balancer. Belt driven alternators were never added by Mercruiser but aftermarket and boat owners when the factory charging system failed (the water...
  15. Eric 3.7LX Alpha 1

    1984 470 initial carb set up to get idle

    There was a TSB on initial timing for the 470, see the attached file
  16. Eric 3.7LX Alpha 1

    New motor knocking???

    That's not assembly lube, it's water. Did you check the dip stick to see if it read higher than full?
  17. Eric 3.7LX Alpha 1

    1984 470 initial carb set up to get idle

    There most likely won't be any fuel in the bowl with a new engine so pumping the throttle will only help you set the choke. You'll have to either prime the fuel line or squirt some gas down the carb throat so you not sitting there cranking the engine on waiting for gas to fill the fuel bowl.
  18. Eric 3.7LX Alpha 1

    wont shift out of reverse mystery issue

    The shift interrupter switch the guys are referring to activates when coming out of gear and into neutral only, it doesn't or shouldn't engage going from neutral into gear. What it does, is cut spark to the engine for a brief second, which allows the shift happen easy without fighting the torque...
  19. Eric 3.7LX Alpha 1

    470 4 barrel conversion, one cylinder missing

    There is also one other change the other guys aren't mentioning, but I'm not sure if it was only for the 4 barrel carb engines only. They upgraded the heat exchanger from a 3" diameter to a 4" one, which is what I have on my 3.7 LX with 4 barrel carb. I have the same engine as you except the...
  20. Eric 3.7LX Alpha 1

    Help figuring out how to fix my issue I’m having with my boat.

    Post #3 in this thread has a picture: https://forums.iboats.com/threads/mercruiser-shift-shaft-washer-size.658362/
View older results
Top