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  1. 7

    OMC to Mercury conversion

    Has anyone done a conversion from OMC to Mercury. I have a 78 Grady White with an OMC 5.0. I've read many bad things about stringer drives. I have access to a Mercury outdrive with lass than 400 hours. The drive has the bell housing, transom mount and drive. I need exhaust manifolds and the...
  2. 7

    Transom Hight

    If rebuilding an old tri-hull. It originally came with a short shaft motor, but the motor is no good. I have another motor, but it has the long shaft. What problem would I have by using the longer motor. I was also thinking of reducing the cutout for the motor and raising the mounting. What...
  3. 7

    Fuel Line

    Does any one know the fuel line routing for a Mercury 135 inline 6? The motor has 3 carbs. My motor has been apart for over a year. We attempted to start it today but no fuel is getting to the carb's. If I remove the line from the tank to the lower pump and squeeze the bulb I get good fuel...
  4. 7

    Repower

    I gust got a 21 foot Gray-White that I plan on rebuilding. It has a Chevy 5.7 engine which was not stored properly and the block cracked. Has anyone come across a supercharged boat engine? I'm thinking of replacing the 5.7 with a supercharged 4.3. I figure this would gain me horsepower, mileage...
  5. 7

    Super Charger

    I have a 21 foot Grady-White with a blown 5.7 OMC. I'm thinking of replacing it with a 4.3 with a Paxton super charger. I figure I can get less weight, more horsepower and more deck space. Has anyone used a super charger? A turbo would cause too much heat and I don't know how it would react to...
  6. 7

    Water pump

    Can someone tell me what direction the water pump turns. I removed the impeller last fall and now that it's going back together I can"t remember what direction the impeller turns. The manual doesn't show it. Thanks
  7. 7

    Fuel tanks

    I'm in the process of restoring a boat with above deck plastic fuel tanks. I was at the gas station today filling a plastic gas can for the lawn mower. As I'm filling the can I was thinking about the spark hazard when filling a gas can on the tail gate of a truck verses on the ground. What about...
  8. 7

    Transom clamps

    I have a 72 TOP 135 inline six. I'm trying to remove the transom clams from the motor and replace them. I've removed the large nut at the top and the small one at the bottom. I see no other hardware but the clamps won't budge. Is there something I'm missing? Thanks
  9. 7

    OMC engine mount

    I have a 1978 Grady White with an OMC sterndrive. What is odd is that the motor is not mounted to any lifting cradle. It's mounted to fabricated mounts on the hull. The guy the gave me the boat said that it was this way when he got it 15 years ago. The sterndrive lifts and rotates back and forth...
  10. 7

    outdrive?

    I just got an early Grady White and I'm trying to ID what kind of outdrive I have. I've never owed an inboard/outboard before. The motor is a Chevy 5.7. The outdrive is painted white with a sticker that says V-6. To raise the drive up and down appears to be gear driven from the left side of the...
  11. 7

    What a score

    Well last week I was telling someone that I was rebuilding a 72 bowrider and he told me a friend of his wanted to get rid of his boat. He didn't winterize it and the engine block cracked when it froze. Just for giggles I decided to call him. Turns out the boat is a 89 21 foot Grady/White with...
  12. 7

    Fuel Tank Size

    I'm halfway through a restore of a 73 Steury tri-hull. It's a 17 foot boat with a 135 horse Mercury tower of power inline 6. The guy I bought it from had a 6 gallon fuel tank which he would frequently run out of gas so he would carry a gas can in the boat. Can any one tell me what fuel tank size...
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