Recent content by mk160

  1. M

    Location of freshwater exit for Mercruiser Alpha 1 Gen when on muffs

    Went out early to the lake this morning to check impeller output (see video). I believe this is adequate flow? Little rough and exhausty as I just started the engine.
  2. M

    Location of freshwater exit for Mercruiser Alpha 1 Gen when on muffs

    I agree, way to high. Seems like it should have been closer to 160+. After I verify the impeller pressure I think the heat exchanger will be my next focus.
  3. M

    Location of freshwater exit for Mercruiser Alpha 1 Gen when on muffs

    I'm learning a lot, thanks. Since my last post I pulled off the lower unit again on a hunch. I had my wife help me put it back on and she caught that the guide tube missed the target, which I think, would explain the water coming out of the propeller and not the exhaust. So with her help I...
  4. M

    Location of freshwater exit for Mercruiser Alpha 1 Gen when on muffs

    And the idle relief ports are vicinity the exhaust?
  5. M

    Location of freshwater exit for Mercruiser Alpha 1 Gen when on muffs

    Thanks. I modified my original post before reading your feedback. When I raised the drive to about 45 degrees the water was exiting at the muffler where I'm used to seeing it. I think that makes sense with your feedback?
  6. M

    Location of freshwater exit for Mercruiser Alpha 1 Gen when on muffs

    Just replaced my impeller and on a test run on muffs water was coming out of the propeller area and not in the exhaust where I thought it normally did. When I put the stern drive up about 45 degrees the water exits with the exhaust where I'm used to seeing it. Is there an issue here? Appreciate...
  7. M

    1986 Mercruiser 470 groaning/howling noise

    Mercruiser 470 (1986) almost always makes a groaning/howling sound that seems to be coming from front of the engine. Normally goes away after the engine is warm... any ideas? Has done this for the five+ years I've owned the boat. Thanks!
  8. M

    Mercruiser 470 Alternator conversion

    We took the stator out, didn't want the chance of something still generating unwanted power.
  9. M

    Replacing thermostat on Mercruiser 470

    Thanks, did not know that. I'm assuming the previous owners had an issue with the stock filter. I'll see what I need to do to replace it.
  10. M

    Replacing thermostat on Mercruiser 470

    Jhamblett I just looked a little more closely at your second picture. It appears that the thermostat is at the front end of the exhaust manifold and that I should be able to replace the thermostat from below without removing anything?
  11. M

    Replacing thermostat on Mercruiser 470

    Thanks! Looks like four bolts to get the reservoir off and then the manifold. I did my alternator conversion about four years ago, still have my stator!
  12. M

    Replacing thermostat on Mercruiser 470

    I need to replace the thermostat on my Mercruiser 470 (4 cyl, 224 cid, 165 HP). The engine SN is OB749835. I have the thermostat replacement kit, exhaust manifold (sierra 18-0956-1) and elbow gasket (sierra 18-0113-1) on order. Any lessons learned or advice out there? Thanks!
See more
Top