Search results

  1. M

    Best prop fuel economy

    Thanks bikestdy. great to find someone with this engine. Thanks for the great prop advice. What is your cruising speed and rpms with your setup.? And do you have any idea on mpg or gph? Is your 3.7 a closed cooling system? Any info on your experience with a closed cooling system would be...
  2. M

    Trim issues

    Thank you
  3. M

    Trim issues

    Great news.. thanks
  4. M

    Best prop fuel economy

    Hello all I have a 1991 Larson 18 laser se With a mercuiser 3.7L alpha 1 Gen I and I currently have a 17x14.5 prop. At WOT I'm running about 38mph at 5300 rpm. I am not familiar with the 3.7L. But 5300rpm seems a bit high (at least compared to the 3.0L , 4.3L and 5.7L that were in our...
  5. M

    Trim issues

    That kinda makes sense. The switch did seem to operate opposite of my previous 4 boats (up was down and down was up) Which I kinda thought in my head last year after I bought it. But I figured it was my old age catching up with me. I watched the seller lower it when we bought it but never...
  6. M

    Trim issues

    I have tried that and also tried raising it as far as it will go(which is about half way) then lowering it just a bit and raising it again. Sometimes it won't get back to halfway after trying this. Then I have to lift it manually will some presses the trim switch. Thanks for everyone's help
  7. M

    Trim issues

    So if it trims up slowly and not fully is it safe to say it's probably a pump issue?
  8. M

    Trim issues

    When we bought the boat late last year The trailer switch was disconnected. And I'm pretty sure the limit up switch is not functional. The wiring from the pump(blue, green and black) to the solenoid seems to be fine. Will the nonfunctional limit up switch prevent the pump from Appling enough...
  9. M

    Trim issues

    I also so have a prop question. Should I start a new thread for that?
  10. M

    Trim issues

    Mercruiser alpha1 gen 1. I believe.
  11. M

    Trim issues

    I have 1991 Larson 18 Lazer se with the 3.7 liter.
  12. M

    Trim issues

    Hello all I am having problems with trimming my lower unit. Goes down fine but comes up halfway slowly then needs help the rest of the way. And stays up. I have no leaks that I can see and the reservoir is full. I'm assuming it's my pump but before I splurge for a new one I'd like to be...
View older results
Top