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  1. J

    crownline 250 prop

    I have a 1994 250 cr with a 454 and bravo 1, I dont know the gear ratio its worn off. I want better gas milage. My prop now is a 21 pitch mirage, the rpms are 4450 at 40 mph with a normal load for us and a half tank of gas, no reason to haul an extra 40 gallons of gas for a 10 mile trip. I can...
  2. J

    Crownline 250 prop

    I have a Crownline 250 1994, 7.4 carburated motor. It ran 5250 rpm with a 17p Mirage and 42mph. It also ran 5000 rpm with a 19p ballistic 41 mph. I have a 21p mirage i will be trying in a week from now. My question is what 4 blade prop would you recomend. I have to cruise at 4000 rpm, 31 mph...
  3. J

    seawater pump impeller

    What does the rubber plug that you push in the impeller to the back of the housing do? Is it needed?
  4. J

    Low water pressure at the sink and shower

    Does the hot water heater have to be on to get water pressure. I took the pump out and it appears to have the correct water flow. Or could the hot water tank have lime deposits.
  5. J

    3 pin anchor light

    I cant find a 3 pin anchor light. What are the 3 pins for? Going the lake tomorrow morning to stay the night.
  6. J

    Alcohol stove

    I have a 25' crownline cr with a alcohol stove, but i dont see where to put the fuel in. Any ideas. Thanks
  7. J

    71 60hp

    How much is a 60hp worth with a bad piston it siezed yesterday. With controls and all has cdi ignition.
  8. J

    1971 60hp pistons

    Can you still get pistons for these motors, I cant find them anywhere.
  9. J

    60ES 71C Timing

    Can someone tell me the initial and total timing for a 60ES 71C? 1971 60hp Johnson.
  10. J

    Ignition curv

    Can someone post the ignition curv for a Thunderbolt IV, 1987 454. And will it work on a 350?
  11. J

    shift interupt switch

    Has anybody installed an aftermarket ignition on a mercruiser 350 1989 era boat. Where do you conect the switch?
  12. J

    Thunderbolt IV to Mallory

    I want the change from Thunderbolt ignition to the mallory but I cant see were you would hook up the shift interupt switch. 1989 with alpha drive. Has anyone done this conversion yet?
  13. J

    71 Johnson 60hp not running right?

    Let start with the problem, it seems to be jumping the spark between wires, the #2 cylinder is running all the time, #1 seems to be firing at 36 degrees btc, #3 runs some times. It is on a 14 foot aluminum boat, and top speed is around 25. New cdi ignition and coil Rebuilt all 3 carbs made new...
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