Search results

  1. K

    1970 OMC CUFM-69B Impeller access

    When you get the service manual and I hope it is a GENUINE OMC, you will see the drive being worked on mounted in a special holding fixture. Without them it is a real PITA to work on. I have performed this many times, for you I suggest first drain the upper gear housing. It is not necessary to...
  2. K

    Volvo Penta AQ140 water coming out of carbs.

    The replacement engine looks good from the outside. Those are tough engines and give a lot less trouble than the later models. I hope you got the PDS housing with it. Good luck.
  3. K

    New gimbal bearing, can’t get alignment tool in coupler

    To check if the rear engine mounts have collapsed is with a sharp pick try to rotate the insulators on both sides. If you can move them the mounts are still good. One reason why Mercruiser wanted the open side of the gimbal bearing carrier facing forward is someone started selling just the...
  4. K

    5.0GL - No Power at Coil

    Try to get the original one rebuilt, 120 amp would be good if you had some high dollar sound system in the boat. You should be able to find a rebuilder in your area.
  5. K

    Test stand running 70's 350 water hook up

    A drippy Quadrajet can be caused by a plugged air bleed in the Venturi. Or a vacuum leak also. A tiny piece of wire, carburetor spray or compressed air To clean it. Or if the idle is too high. Try to get the engine to idle as slow as possible when setting the timing. What is the timing set...
  6. K

    Test stand running 70's 350 water hook up

  7. K

    Ran motor (in driveway) without oil in lower unit?

    It appears you are having trouble with the front stud that is bound up through the lower part of the drive shaft housing. Raise the drive all the way. Get 2 pieces of 1” wide X 1/4” flat steel and grind them to a round end to fit in the pocket. Get a propane torch. Back the 2, 5/8”O.D. hex...
  8. K

    Need to ID motor

    If there is a drain screw below the intermediate ball gear shaft then the housing has been changed some time after 78. That is good for you. The shaft may have the double tapered bearings. However you need to fill it from the bottom.
  9. K

    Volvo Penta AQ140 water coming out of carbs.

    That engine must have broken the timing belt, otherwise it would have hydro locked and not turned over. 2X with Scott on the carburetors.
  10. K

    Volvo Penta AQ140 water coming out of carbs.

    If you reuse your twin carburetor on the 130 it should bring that engine up to the original engine’s power.
  11. K

    5.0GL - No Power at Coil

    Your alternator may have a stud marked “stator”. It is only hot when the engine is running, it should have 12 volts. If you have that setup connect the choke to that terminal. You do not want to use the circuit that powers the coil. Another way is with a electric fuel pump safety switch that...
  12. K

    Need to ID motor

    The other screw on the starboard side above the lower is just a vent as the housing gets filled from the lower drain hole and an indicator if the case was full. If you have a dip stick in the top of the exhaust housing cover then you can use it to gauge when there is enough oil in the gear...
  13. K

    Need to ID motor

    Starboard side of the gearcase.
  14. K

    Removed the Wrong Screw

    Remove the drive like Scott said then stand it upside down, you should be able to fish the piece of metal that the screw went into and reinstall the screw holding the plate in place. Worse case scenario with a service manual separate the upper from the lower if you cannot fish out the plate with...
  15. K

    Couple of questions

    Too bad you did not pressure test the engine before taking the heads off. For the time being take them to a machine shop and have them checked. One source for a complete package is the Copart Auction. They often have boats that were involved in accidents.
  16. K

    5.0GL - No Power at Coil

    Are you sure the choke is adjusted correctly? With the key off and a cold engine all that is needed is for the choke butterfly to be barely closed. Have you actually seen the choke be fully open within 2 minutes? Does the choke housing get warm to the touch? Otherwise you did a good job and...
  17. K

    Cracked upper unit housing at spanner nut

    The front of the drive shaft housing has to compress and seal the large “O” ring in the bell housing. If you could put the broken piece back in place with some sealer or weld it, it might work. Otherwise you will need another drive shaft housing.
  18. K

    Test stand running 70's 350 water hook up

    I would start with a small amount of water to get the thermostat to open quicker then just a little more so that steam starts coming out with the water. That way if there are any oil leaks they will show.
  19. K

    Bad 1970 Mercruiser Engine, Please tell me there is still hope.

    There has to be a few marine salvage yards where you are located. I am sure one of them will be able to supply you with a good used set up. Go ahead and have the engine checked out, since it was used in fresh water there is a good chance it can be rebuilt. As far as hull repair and you are not...
  20. K

    Remove quadrant gear and Stern leg is stuck in down position

    When lowering the drive do not hold the tilt switch down until the drive hits the end of travel. Just tap the switch a few times until it is full down, if the drive comes down too fast it is possible to either wring off the end of either the tilt motor shaft, the tilt shaft or shear off the...
Top