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  1. Scott Danforth

    Raw water pump volvo belt driven

    https://www.spxflow.com/assets/original/johnson-pump-marine-marine-catalog-2018-us.pdf start about page 42. page 46 has the F5B (5.7 liter and smaller) and F6B (5.7 liter and bigger) crankshaft mounted pumps for the GM motors being belt driven, I assume the F7B. the SPX catalog sucks. the...
  2. Scott Danforth

    2000 vp 5.0 - can i use the closed tstat housing for raw conversion?

    ^+1
  3. Scott Danforth

    Mercruiser 7.4L heat exchanger repair

    Is this a CHAMP or monitor heat exchanger? I would recommend that you take it to a radiator shop so they can pressure test after the repair the tube bundle is brazed, so that is not an issue, and the elbows to shell brazing is usually done prior to the tube bundle being installed in the shell...
  4. Scott Danforth

    Trailer tongue bracing? Help!

    hire a mobile welder to come to you. or flat-bed the boat/trailer
  5. Scott Danforth

    Merc Controls

    the controls on the 9.8 that you had were a 9.8E only option used on pontoon boats. basically mercontrol lite.... no frills, just 4 wires back to the motor. it took me over a year to find one for the hellion because I was running a 9.8E power head on the hellion. there are 2 starter wires and...
  6. Scott Danforth

    Aluminum Boat Transom Knee

    I would use 11 gauge (1/8")
  7. Scott Danforth

    OMC Cobra Lower unit replacement

    Find a complete 1992 or later Mercruiser 5.7 and Alpha 1 Gen II and swap complete
  8. Scott Danforth

    Aluminum Boat Transom Knee

    Use 5051, it will bend just fine
  9. Scott Danforth

    Aluminum Boat Transom Knee

    Any local fab shop can make you one
  10. Scott Danforth

    Correct Temp gauge for Merc 3.0 Sender 97257A1

    The gauges are generally 240-30 for North American boats, and 0-100 ohms for European. There are a few odd ones out there, however that is a generic temp sender
  11. Scott Danforth

    Raw water pump volvo belt driven

    The rebuild kits will come from Johnson or ITT Jabsco. However last time I bought a pump, it was only $150. The rebuild kit, impeller, etc came out to about 90.
  12. Scott Danforth

    Correct Temp gauge for Merc 3.0 Sender 97257A1

    its a generic sensor for 240-30 ohm gauges
  13. Scott Danforth

    Raw water pump volvo belt driven

    Most of the Volvo raw water pumps are Johnson. Some are ITT Jabsco. you can shop the volvo store here. https://www.volvopenta.com/shop/
  14. Scott Danforth

    2000 vp 5.0 - can i use the closed tstat housing for raw conversion?

    yes, the thermostat housings are vastly differnt the thermostat housing in a heat exchanged motor does not circulate anything to the exhaust. that is handled by the heat exchanger the thermostat housing in a raw water cooled motor uses the thermostat as a mixing valve and always has flow to...
  15. Scott Danforth

    Trim motor kills the radio

    welcome aboard you have bad connections, most likely at the starter, or the battery. start by taking apart each connection from the battery, cleaning it until its clean and shiny enough your mother in law would eat off it. then tighten and move on to the next connection
  16. Scott Danforth

    Does Tohatsu make motors for Mercury or vice versa?

    All Mercs 40hp and below are Tohatsu with merc decals there are some cross branding above 40hp, however I do not know which ones are which
  17. Scott Danforth

    oil pressure sending units dual station SW gauges, exists any single station sender can work?

    See links in post #12. https://forums.iboats.com/threads/generic-boat-wiring-information-updated-verified.726970/
  18. Scott Danforth

    Boss's boat.....worlds fastest v-hull

    186 mph this year. https://www.speedonthewater.com/186-mph-factory-billet-raises-the-shootout-bar-likely-to-try-again-next-year/ there is a lot more in the boat to go
  19. Scott Danforth

    oil pressure sending units dual station SW gauges, exists any single station sender can work?

    you cant repair the $15 sender. if the harness was submerged in salt water, water will have wicked up the copper. most boat OEMs do not spring for the tinned copper, so you get the black corrosion
  20. Scott Danforth

    no speed then back to full speed

    check your fuel pressure
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