Logo
FULL SITE MENU

Recent content by makomark

  1. makomark

    Are my props causing all my problems?

    not really, its done with the engine running and assesses the performance of the engine using a gauge connected to the intake.
  2. makomark

    1998 Silverton 372 454XL TB Fuel Cut

    Does the fuel pump stop running or does the engine just die from lack of fuel after the 60-90 minute run time? independent fuel tank for each engine or one shared tank?
  3. makomark

    Are my props causing all my problems?

    On your measurements, numbers with UNITS, go a long way to conveying the whole story... if its running, the coil is not likely to be the problem. "HEI with an ICM" is vague. Unless you use the boat a lot, you'll be better off with the factory setup, assuming its working. Know how the ignition...
  4. makomark

    Crusader 350 w/ Velvet Transmission: Locked up after brief shutdown

    I can't believe he's found a service center that isn't backed up for weeks... FWIW, I'd plan on changing the other damper plate-sooner rather than later...it likely won't be too far behind.
  5. makomark

    OMC 225 307 sea water pump

    the rubber vane impeller pumps can usually be reversed by inserting the impeller with the opposite rotation...that part is easy. getting the mounting (and adjustment) is usually the hard part...the hose routing can usually be adjusted. As to the flow rate required, you have to look at the...
  6. makomark

    OMC 225 307 sea water pump

    Yes, had a hunch but it didn't pan out...an old Sherwood G9902. Usually, you can find the identifying numbers/marks/letters via close inspection of the pump. Like alternators, they are usually bought from one of the specialty suppliers as turn key subassemblies. If you can't find that data, a...
  7. makomark

    75 Formula Shift Issue

    If you want to see if the switch is bad, better to use an old bulb type of test light. That will allow adequate current to flow thru the switch and also eliminate the 'digital' effects from most DMM's.
  8. makomark

    OMC 225 307 sea water pump

    they aren't real common...I'd say most likely an old sherwood pump. What's the OD on the V-belt pulley? Can you measure the hose sizes - I'm thinking one is 1" and the other is 1.25" (measuring the hose nipples on the pump, below the barb, is probably the most accurate)??
  9. makomark

    Multiple Starters

    If you are talking about the inspection plate at the bottom of the flywheel cover, it makes a big difference in keeping water out of the starter when the boat is being operated... Ideally, you don't want any water in the bilge but that rarely happens on an I/O powered boat...
  10. makomark

    Crusader 350 w/ Velvet Transmission: Locked up after brief shutdown

    Damper springs have been known to fall out and they usually make a mess...but I've never heard of one coming out at idle...given 40 years, anything is possible...
  11. makomark

    Are my props causing all my problems?

    reving in N really doesn't tell you much....under load is where the rubber meets the pavement. I'd also suggest checking the timing as well as making sure it advancing with RPM... may also want to verify fuel pressure is stable while running...and that the anti-syphon valve is clear...
  12. makomark

    Looking for Gray Marine Sea Scout 16 0r 25 hp for 1938 Wilhoit Launch or y91 Continental ??

    bummer...given the age, it will likely take a while to find something worth using...maybe consider an Atomic 4??
  13. makomark

    Crusader 350 w/ Velvet Transmission: Locked up after brief shutdown

    not sure what voltage drops you measured. either way it doesn't appear to be promising for that engine. if the plugs are out, I'd see if the engine allow some rotation...the flywheel cover timing port is probably the best... the last question, for now, is have you inspected the gear oil -...
  14. makomark

    Crusader 350 w/ Velvet Transmission: Locked up after brief shutdown

    Is the amperage draw an assumption or was it measured? Did you attempt to rotate the engine with the plugs removed? As long as the velvet drive goes into Neutral, the prop shaft rotation is completely independent of the engine's situation. Have you tried swapping starting batteries between...
  15. makomark

    Shooting gas out the top of the carburetor

    on the original problem - if you believe the needle and seat (and float) are in good condition and properly adjusted, about the only thing left to check is the fuel pressure at the inlet to the carb...
See more
Back
Top