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  1. chollyjohn

    Prop Size Pitch and Slip

    "I probably can find out soon "I probably can find out soon enough by taking my props to a shop and get some advise; but many of you may help me with this quest. If you change from say a 17" pitch prop to a 19"pitch prop with a slight cup; then, at low RPM's such as 650-1000RPM, would there...
  2. chollyjohn

    Engine and Charging Sys Wiring Diagrams

    "I am looking for general info "I am looking for general information, a manual, a service book, a DIY book, etc. to get an overview of how to maintain, replace or modify an electrical system (engine and charging only) for a Powerboat. Hopefully, too, one that will engauge information for twin...
  3. chollyjohn

    Dangerous and Volitile Cargo Manure in Bilge

    "MANURE LESSON You learn so "MANURE LESSON You learn something everyday...here's your lesson for today: Manure: In the 16th and 17th centuries, everything had to be transported by ship and it was also before commercial fertilizer's invention, so large shipments of manure were...
  4. chollyjohn

    Hydronic Heater Core up to Flybridge

    "OK. Has anyone ever installe "OK. Has anyone ever installed or heard of an installation for a heater coil piped from engine up to the flybridge. So far I have been told it cant be done; But, then a mechanic said you can use a hot water heater with heat exchanger. The engine heats the hot...
  5. chollyjohn

    Heater for Open Salon Cockpit

    I am looking at purchasing a h I am looking at purchasing a hydronic heater for the open salon portion of my cockpit area. Area is roughly 9' x 11' x 6' high. Roof area is the bridge and sides have glass windows; rear has a canvas eisenglas/canvas drop curtain. I am trying to determine what...
  6. chollyjohn

    Raw Water Flush Kit for 81L Mercruiser MIE

    "Has anyone installed or have "Has anyone installed or have the option on thier engine (early model 8.1L inboard) for the FLUSH KIT assembly? The hose connect is mounted on the riser. I have contacted Merc and they refer me to ask a dealer, neither wil give the info without purchase of the...
  7. chollyjohn

    Hurth 630 direct drive 3 gear transmission

    "I have two 2003 Hurth (hy "I have two 2003 Hurth (hydraulic; 2.25:1) trans on my twin engines. No problems other than the port trans "whines" in reverse adn the starboard "whines" in forward. Unusual and even my mechanic is stumped on this one. My controls are dual helm MAROL hydraulic...
  8. chollyjohn

    Lenco Trim Tab Trolling Motors

    Looking to purchase Trolling M Looking to purchase Trolling Motors that can be attached to the trim tabs. I have searched Lenco and wondered if anyone has experience with these motrs and their dependibility.
  9. chollyjohn

    Mercruiser Inboards and 87 Octane Fuel

    "There is alot of controversy "There is alot of controversy as to the problems arising from use of 87 Octane gas fuel containign 10% Ethanol. I have heard it is good to keep tanks full to avoid condensation, keep water seperation filters clean and add fuel stabilizer to extend period of gas...
  10. chollyjohn

    Determine new prop pitch for added HP

    Some may know in this Forum I Some may know in this Forum I have been searching for a boat. 270DA by Sea Ray. The original engine was a 7.4L (330) HP with Bravo II outdrive. Recommended prop is 17.75 x 21. The engine is now changed to a 7.4LMPI (365HP) and same outdrive being used. Outdrive...
  11. chollyjohn

    When to replace or rebuild engine

    "In my most recent quest to pu "In my most recent quest to purchase a boat I have encountered a troubling quesiton. The boats that I am looking at are 1989-1993 years. I feel construction was good then and I would have a trusted hull (surveyed of course). I am seeing boats with the original...
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