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  1. K

    OMC King Cobra won't engage forward gear, but reverse works good

    Have you checked the condition of the shift cable going through the transom. Sometimes the outer jacket separates and the cable will not give full stroke. The control box has to move the inner core of the cable 3” from forward to reverse.
  2. K

    Water in oil...

    The thinnest part of the casting is usually at the bottom of the water jacket Inside of the crankcase. You might be able to get a fitted block which comes with main ,cam bearings & pistons with rings. You re use every thing else. Otherwise just get a marine short block. Marine Power in...
  3. K

    What is this and where does it mount?

    If you need to get to the lines going to the trim block just remove the 2 1/4” 20 self locking nuts and pry the block down, the gasket may survive but if not you will have to either get a new one or “old school” make one.
  4. K

    What is this and where does it mount?

    That is the Alpha style. Unless you already have the Alpha style large rams. Low pressure high volume. Which use larger diameter flexible hoses. You need the opposite which is what you currently have, high pressure low volume.
  5. K

    What is this and where does it mount?

    I have been searching around for Prestolite pumps and the later style block that has the reverse lock incorporated. Unfortunately every place I have looked it is NLA. I am sure there is one somewhere. Finding a complete pump will work but the block on the bottom has to have 2, 3/16”inverted...
  6. K

    Water in oil...

    Unfortunately, you have a cracked block. The crack is probably under the intake manifold. You did not say what engine you have and I am just assuming it is a Chevrolet. If there is no crack then there is a pin hole leak somewhere.
  7. K

    What is this and where does it mount?

    4.3 V6 flywheel housing. The same dimension for all V style engines from 1971 to current Alpha In line models also. Some Ford model flywheel covers had 2 sets of dowel pins for use with Chevrolet engines.
  8. K

    Prestolite IBM-4115 replacement

    The flat style distributor may not be available but the later style used on OMC and Volvo will fit. The internal parts should also be available from Crowley Marine who stocks obsolete OMC parts. Give it a try before you give up. Chrysler used Prestolite distributors on their auto and marine...
  9. K

    Prestolite IBM-4115 replacement

    If the centrifugal advance is working smoothly in both distributors why not just buy a new pair of Prestolite Ignitors then you would have a spare.
  10. K

    Prestolite IBM-4115 replacement

    You may have to switch to electric tachometers. Mallory would be a good source. Finding a new pair of mechanical tachometer drive distributors could be expensive.
  11. K

    Trim won't stay in the up Position

    Since it is obvious that the relay is being energized as AD suggested the green wire is in contact with a positive source. Why not just bypass the green wire with a new one from the control to the down relay. Is the trim harness separate from the engine harness? Is the harness enclosed in a...
  12. K

    What is this and where does it mount?

    Question, have you ever rebuilt the Prestolite style hydraulic rams? Then you know about the thin outer housing. If someone jumps the up solenoid while the drive is shifted to reverse the rams will explode if it has the early style lock valve. The last generation of the Prestolite pumps had a...
  13. K

    What is this and where does it mount?

    Since you still have the original Prestolite system does the drive rise up when you shift to reverse? The blue wires from the Micro switch are supposed to prevent the pump from running in the up direction. If the pump tries to raise the drive while the valve is in the reverse mode and the...
  14. K

    Help Diagnosing carb vs ignition problem, 5.7 mercruiser

    If it was possible to leave the harbor on the good engine then try running the problem child once you are in open water to see how it does while planed out for 30 minutes.
  15. K

    Taking my 1984 LaveyCraft out of moth-balls

    Smart move, these things can become a Pandora’s Box once you start on them. 30 years ago it was no big deal because the special tools were still at my shop and genuine OMC parts were a phone call/fax away. If you start having drive pump problems and you have about 6” in front of the...
  16. K

    Help Diagnosing carb vs ignition problem, 5.7 mercruiser

    One thing to look at, after both engines are up tp temperature and are idling remove the flame arrestors and look at the Venturi boosters. Look to see if fuel is bubbling from the boosters on the engine that is giving the trouble. If so then it is gradually loading up with fuel. How does the...
  17. K

    SX outdrive stuck or was now broke :(

    If the bearing flange is actually bound in the pivot housing then if you remove the large socket head bolts then the shaft and pivot housing may come out as 1 piece.
  18. K

    SX outdrive stuck or was now broke :(

    The gear is a press fit. You might have some luck with a gear puller that can reach around the remainder of the retainer and with the torx bolt removed and the puller against the shaft. Once the retainer and gear are removed then you can remove the pivot housing and try pulling the shaft out...
  19. K

    Engine Replacement/Upgrade

    Another source is Marine Power in Pontchoula , La. Check their web site. They have distributors around the country.
  20. K

    Taking my 1984 LaveyCraft out of moth-balls

    Like SD said about the ball gears they are close to replacement time. The thing to be really cautious about is the shift cable. Hopefully it is not corroded in the intermediate housing where the outer jacket peals off of the core. In the past I have had to replace water pumps and ball gears...
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