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  1. K

    Swap an OMC 5.8 with OMC 5.7

    In that case then it should be a slam dunk. Especially if the GM engine has the electrical. The Ford probably was fuel injected, if not all the better as you will end up with extra electrical components. What was wrong with the Ford engine?
  2. K

    Swap an OMC 5.8 with OMC 5.7

    Some OMC flywheel housings have a dual bolt pattern for Ford or GM. Is the 5.7 a OMC version or a Merc?
  3. K

    Water in gearbox

    Check the cooler on the rear of the transmission.
  4. K

    Mercruiser 3.0 starter

    Most times when the starter spins but does not engage there is a rust build up on the shaft which stops the gear from moving toward the flywheel. The solenoid lever is compressing the spring that normally pushes the drive to the flywheel. Sometimes just a strip of sand paper with WD 40 or...
  5. K

    5.0 Gxi-ce 270-r misfires cyl 4&7 at full throttle

    Check if the fuel rails are stainless of plain steel with a magnet. A shop owner friend told me about a Volvo that had plain steel rails that had some rust inside which was getting on the screens of the injectors which caused some problems.
  6. K

    Inboard Drive Shaft Issue I need Help!

    Also keep in mind that the alinement needs to be done with the boat in the water.
  7. K

    Hard Start All The Time

    You need to check if the by pass circuit is the problem. Get a volt meter and check that there is at least 12 volts going to the coil while the engine is in cranking mode. On the starter solenoid there are 2 small terminals on either side of the battery cable. One side has a #10 ga. Yellow/red...
  8. K

    MC-1 (aka Pre-Alpha) Gimbal Ring Replacement

    The inner original plate also needs to be compared with the male alinement extension on the Alpha outer gimbal housing. Also the 233’s exhaust down pipe‘s bolt pattern has to be checked that it mates to the Alpha housing. The Alpha inner plate mounts the steering lower which will not clear the...
  9. K

    bought a kicker motor

    The new outboard will probably a 4 stroke. If so then just get a bulkhead fitting with a 1/4”npt so that the fuel line can be connected to the outboard fuel hose from a source in the boat. Summit/Jegs has them long enough to go through the transom. The rig the steering line SD suggested.
  10. K

    Mercruiser Carb with 3.0 engine Alpha 1 is running a little rich. Do I go in or out with screw?

    Start with 1.5 turns out from lightly seated. Most times that is where it will be the best setting or 1/4 turn either way. Also checked in the water as dubs suggested.
  11. K

    MC-1 (aka Pre-Alpha) Gimbal Ring Replacement

    I have removed that nut without drilling but it is a PITA. With a punch and a suitable hammer it can be worked loose depending of the construction of the boat. There is a 1/4” pipe plug screwed into the bottom of the shaft that has to be removed with an Allen wrench also. The seals should be...
  12. K

    cobra 3.0 hesitates

    It appears that you have a Holley. If that is what you have then try this. 1.5 turns out from lightly seated with the idle mixture screws should idle correctly and with 1-1.5 turns on the idle stop screw. Any thing much more than these settings usually means it needs to be repaired.
  13. K

    1997 PCM PLD 5.8L parts

    Is your Ford engine left or right rotation? Straight or “V” drive? Post a picture of the distributor with the cap removed. The ignition points and condenser ,rotor and cap are easily matched up at any NAPA store. 351 Ford parts are easily also found at any NAPA store. OMC, Volvo and...
  14. K

    Universal control cable

    Those look like Morse 3300 series. Show a picture of the end that was not cut.
  15. K

    1981 stringer drive leak

    As suggested the drive has to come apart. Most likely the seals above the water pump is the source of the leak. You need to get a Genuine OMC service manual for this model. This thing can be a real can of worms.
  16. K

    Corrison hole in gimbal housing?

    Any good welding shop can mig weld a patch over the hole. The most important surface is where the drive shaft boot attaches to the gimbal housing. If water ever sat in there long enough and the area where the boot seats is eroded away then it should be replaced.
  17. K

    carburetor options.... mine is toast.

    Get some muradic acid and put some in the plunger cylinder. Let it foam then wash it out with water. With a small pin punch tap the ball a few times. Repeat the process a few times and the ball should loosen up and also with a pointed scribe try scraping around the ball. I have used acid...
  18. K

    Corrison hole in gimbal housing?

    If the hole is in the 1-2 o’clock area or possibly on the opposite area it is an electrolysis problem. I have in the past had the area repaired at a welding shop if the rest of the housing was still in good condition. This hole being high in the housing usually never leaks into the boat.
  19. K

    1993 Mercruiser 7.4 - Is my Problem Carb or Thunderbolt IV module

    If you can use the boat before sending the carburetor to get rebuilt try this. With the flame arrestor removed have someone watch the secondary air valve when the engine starts surging. The vacuum unit that holds the valve closed may have a internal leak allowing the valve to raise the...
  20. K

    Building A Mercruiser 350 Few Questions.

    The 2 sizes that I remember were 7/16 “ 20 or 1/2” 20
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