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  1. K

    Volvo Penta 2.3L AQ131 runs better with timing advanced

    One other thing that helps with starting. Take a look at the solenoid and there should be a male spade on the outboard side. If you run a wire from it to the + or bat side of the coil it will provide 12 volts when the starter is engaged. Check it with a test light or a volt meter first to...
  2. K

    Volvo Penta 2.3L AQ131 runs better with timing advanced

    If you turn the engine over eventually the marks on the belt will Aline with the marks on the respective sprockets. Quite often whenever I changed a belt when the tensioner was released the belt would jump 1 tooth. It is worth double checking . The electronic ignition conversion kit for your...
  3. K

    Reverse engine lock won't hold on vintage Mercruiser IO 153 cu.in. 120 hp engine

    That is probably what is wrong. With the drive lifted about 1/2 way have someone shift the drive into reverse and watch the mechanism. The spring may still be available but to change it takes some work. Upgrading to a later drive platform would be the best way to go. You will need...
  4. K

    Reverse engine lock won't hold on vintage Mercruiser IO 153 cu.in. 120 hp engine

    If your boat still has the 1 hydraulic line going to the rams there is no way for the hydraulic system to hold the drive down. The “corkscrew” shaped brass shift lever below the bell housing is supposed to keep the lock mechanism engaged on the setting pin. Is the lever on the side of the...
  5. K

    Fuel Carburater Question

    Was the carburetor a marine version? If it was an automotive type then #1 it is not safe and #2 it is too lean. Marine carburetors are designed so that if it “floods over” the gas stays inside the throttle body and not out and all over the engine which will cause a fire.
  6. K

    Paragon to Velvet drive swap

    Marine Power in Pontchoula,La. Still advertises LH & RH 5.7s. So it appears that they are still available.
  7. K

    1972 Grew SS245

    Original type “C” oil was made from whale oil. Around 73 when OMC discontinued using it.
  8. K

    1972 Grew SS245

    Obviously the original owner converted to a crankshaft driven raw water pump. The flush cap needs to be left off so that water can circulate through the drive to cool the gear oil. Just change the oil in the lower, you can use automatic transmission fluid as a substitute. Resealing the lower...
  9. K

    1972 Grew SS245

    I had a few customers with the exact boat engine combination. Down here in Louisiana the salt water use took a toll on the engine/drives. However the hulls held up. With fresh water use the the engine /drive is probably still usable. The biggest problem with any drive system is the owner’s...
  10. K

    engine kill switch.

    How about showing where it is mounted?
  11. K

    OMC Cobra 5.7 gear shifting engine stumble, pop and smoke

    Your electric fuel pump should be wired through a oil pressure safety switch. The pump should only operate when the engine is running so that if the engine stops due to the carburetor flooding over it could cause a fire. Good job however on the other issues.
  12. K

    Mercruiser 233 Overheating--Out of Ideas

    What you were seeing was a leaking head gasket. The combustion gas escaping was overcoming the incoming water pressure. A compression test very seldom will show which cylinder is causing the problem unless the gasket is completely blown out. Even after the heads are pulled you probably will...
  13. K

    Did research re slow trim tilt but…

    ARCO marine # TR 217 should be the commutator head with the brushes snd springs. I hope you still have the small ball bearing that sits in the end of the armature to keep it engaged in the pump. To hold the brushes in place cut a 6” length of coat hanger wire then bend it into a “V” using it...
  14. K

    Can you use 2 stoke oil in a prestolite, trim pump?

    Power steering fluid is also a good choice. Keep in mind that it does not foam and has less drag on the trim motor allowing the drive to move quicker up and down.
  15. K

    Outdrive seal 12 hole

    Your transom seal is the round one which is NLA so you will need the 313080 OMC # or 18-2767 Sierra. The 313081 support ring is NLA. You will have to fabricate one from some aluminum 1/8” X 3/4” flat stock. Also the stainless worm clamp is NLA so be careful not to over tighten it or you will...
  16. K

    Did research re slow trim tilt but…

    Just for kicks, how about running a #10 ground wire from the battery to the stud just above where the solenoid bracket is. I am sure that cleaning the terminals would help but from the looks of the rust things will start breaking.
  17. K

    Did research re slow trim tilt but…

    The
  18. K

    MC-1 transom + cork gasket, to seal or not to seal?

    2X with Bondo as that is what sealing the inside holes will prevent.
  19. K

    MC-1 transom + cork gasket, to seal or not to seal?

    In the event that bilge water should get high enough to enter the lower mounting bolt holes then galvanic action will begin to eat up the anodic lower bolts and the studs. I have seen enough of that where the lower studs were almost eaten away. That is when the outer transom gasket starts to...
  20. K

    Ignition Issue

    Check if there is 12 volts at the +/bat side of the coil when cranking, you may either have a bad “bypass” circuit from the main starter solenoid or it is not connected. It is the purple wire on the outboard side of the solenoid.
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