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  1. Scott Danforth

    Help! Overheating 3.0, not impeller or circulation pump

    Yes. Should fill a 5 gallon bucket in 15-19 seconds with motor at 1000 RPM. Should shoot a good 8"+ up when holding the hose vertical However before proceeding since you stated you have water flowing from the raw water pump. Pull the thermostat housing apart and clean the blockage
  2. Scott Danforth

    Electronic Ignition part number and Non-Resistance spark plugs

    Then you have had better luck than I have Mine failed in everything. Didn't matter if it was a car or boat
  3. Scott Danforth

    Help! Overheating 3.0, not impeller or circulation pump

    Pull the thermostat assembly and remove what ever is blocking it. If you have water coming from the raw water pump to the thermostat housing, you should have water to the exhaust as that is a straight shot unless there is a blockage or there is no flow from the raw water pump Running your...
  4. Scott Danforth

    Steering problems: boat won’t turn left (port)

    Well.... We know it's not a NASCAR boat..... those would only turn left
  5. Scott Danforth

    Electronic Ignition part number and Non-Resistance spark plugs

    Personally I would stick with points vs ever considering Pertronix again
  6. Scott Danforth

    1980 120hp

    The timing gears for the 120 hp 2.5 liter have been available since 1962. Same parts as the 153 in the Nova ii, same parts as all the 196/230/250 inline 6 Agree to swapping to the 3.0
  7. Scott Danforth

    Help! Overheating 3.0, not impeller or circulation pump

    Overheat is lack of water flow. Either no flow in....or no flow out Is there flow from the raw water pump thru the hose to the thermostat housing?
  8. Scott Danforth

    Conversion advice

    Your vintage is a mechanical shift (1981-1984), not the earlier hydro-mechanical shift (1978-1980) If you want to look at the stringer, look at the following problem areas: Raw water housing leaks 3-piece vertical drive shaft splines Ball gears Tilt motor and hammer coupling The only source...
  9. Scott Danforth

    Conversion advice

    And marine head gaskets, brass core plugs, marine distributor, marine front accessories. Plus a manual transmission flywheel The only thing you can use from the blazer is the block and heads You still need a Mercruiser transom shield, all the accessories, the Mercruiser wiring, and shift...
  10. Scott Danforth

    Conversion advice

    You can use the block and heads. You need a whole bunch of marine bits to make it work. You are no further ahead than your 1984 block and heads
  11. Scott Danforth

    Conversion advice

    The OMC shift cable is about $1000
  12. Scott Danforth

    Towing Races???

    https://images.app.goo.gl/RceYU5s3PYLYoBhR6
  13. Scott Danforth

    Towing Races???

    They run them at slinger and 141 speedways in Wisconsin Always fun to watch Along with school bus races, chain races (2 cars chained together, on has steering, one has power/brakes), figure 8s
  14. Scott Danforth

    Conversion advice

    There have been about a hundred outboard conversions started on iBoats. About a dozen completed, about 1 or 2 that came out well. The transom must be reinforced to use a pod As for your existing motor, other than the short block, there is nothing that could be used if you convert to an SEI...
  15. Scott Danforth

    350 Mag MPI Thermostat Replacement ?

    Stant is the manufacturer of the OEM thermostat The sleeve has been both plastic and copper (cut from tubing)
  16. Scott Danforth

    Conversion advice

    unfortuneately, fiberglass boats older than 15 years old should be considered projects. all will need work. a boat restoration is iffy at under 10k as Bondo stated, find a junk boat with a good motor. (mid 90's forewinns bayliners, searays, etc.) and get the whole thing for $2k or less...
  17. Scott Danforth

    350 Mag MPI Thermostat Replacement ?

    Yes
  18. Scott Danforth

    Ultrasonic cleaners?

    Since today's carb cleaners suck compared to the cleaners of the 80's. For all really cruded up carbs I do a soak in acetone (metal parts only. Followed by cleaning in berrymans (plastic part safe) Acetone will dissolve most gummy fuel deposits quickly Be careful with simple green..... It...
  19. Scott Danforth

    Conversion advice

    Boat manufactures use motors they have in the warehouse. For example. GM quit building the 8.1 Big Block in 2008. Yet they were being installed in new boats as late as 2014 Your motor is a 1981-1984 vintage that had a stringer drive
  20. Scott Danforth

    Conversion advice

    You have a boat that had a stringer drive. The only thing usable is the block and heads
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