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  1. Scott Danforth

    89 180 Horizon w/ 4.3 OMC

    Vortec motor. No way your intake will bolt up. Plus all the automotive stuff bolted on the front has to go. You also need the correct flywheel. You also have to pull the heads, and install marine head gaskets as well as change the core plugs to brass or stainless
  2. Scott Danforth

    Who here would buy a boat with 1400hours on a 454 mpi?

    I put an HX on my 900 hour fresh-water only motor before it went in the brine The motor was pulled and the water jacket was flushed and mechanically cleaned to prevent the HX from getting plugged. Stayed on the SBC for 3 years then I put it on the BBC
  3. Scott Danforth

    MerCruiser 4.5L 250hp V-6 overheat

    Did you back flush the cooling system?
  4. Scott Danforth

    89 180 Horizon w/ 4.3 OMC

    What are you defining as 3rd gen?
  5. Scott Danforth

    1987 4.3 205 conversion to 1998 Vortec 4.3 marine engine

    Swap out the squishy engine mounts (used on non-balance shaft motors) for the newer mounts
  6. Scott Danforth

    2005 5.0 GXI Volvo penta crank but will not start

    The kill switch only kills the ignition. You can still crank What is the battery voltage while cranking? What is the RPM while cranking?
  7. Scott Danforth

    Will 1.68 DPSM work for a VP 5.0/5.7 Engine?

    What props are on your boat now? How big is your boat? You may be able to prop down enough, however I would look for the correct lower such as dropping from F6 to F3
  8. Scott Danforth

    Mercruiser 4.3L Will Not Start

    We know you can change parts, however what trouble shooting steps have you taken? Have you followed the thunderbolt ignition troubleshooting guide? (It's in the stickies)
  9. Scott Danforth

    Aluminum primed, gel coat?

    2-part paint Gel wouldn't survive on aluminum.
  10. Scott Danforth

    No start question

    What did you set dwell to? What is your timing set to? How hot does the motor get? Have you serviced the raw water pump?
  11. Scott Danforth

    1997 Mercruiser 5.7 EFI blown head gasket

    its called fire-sloting its what happens when you run it with a bad head gasket for a bit. I have in a pinch, welded up the fire-slot, dress the welds and run the motor. usually the head will crack in about 3 months. if the slot is not too deep, you can surface the motor deck and get new heads.
  12. Scott Danforth

    Metal Boat Lettering

    dont over-think it. apply VHB to back of letters trim with x-acto knife use painters tape as guide to get in correct location peal backing, stick in place, press with hand the initial grip will hold in place. by the next day, you need a knife to remove.
  13. Scott Danforth

    1988 HarborCraft?

    what does your paperwork you got with the boat tell you? (Title, Registration and Bill of Sale) without paperwork, it is most likely a yard planter expect to dump about $8k into it as it looks like a severe project. expect the stringers, transom, sole to be rotten. Harborcraft was part of...
  14. Scott Danforth

    Exhaust Manifold question

    how many years did it sit with water in the bilge? pic shows flywheel rusted and water line on the oil pan. I would go with aluminum across the board or cast iron across the board or stainless across the board Stainless Marine (aluminum manifolds and stainless elbows) Gil Marine Custom...
  15. Scott Danforth

    Does this seem right to you?

    looks like the plastic pads are missing. parts are available.
  16. Scott Danforth

    Astroglass 1989 full rebuild

    My wife would kill me if I did back to back restoration projects.
  17. Scott Danforth

    water in engine, is it salvageable?

    from the look of the rusty exhaust ports, you have a leaking exhaust have the head checked at your local machine shop acetone test the exhaust (it may be cracked) drain the oil as you have water in the oil.
  18. Scott Danforth

    VP SX-M trim cylinder - bleeding method?

    steering cylinder is simply turning right and left a dozen times trim cylinders is simply raising and lowering drive fully about a dozen times
  19. Scott Danforth

    Metal Boat Lettering

    3M VHB tape. Probably 4950
  20. Scott Danforth

    90HP Mercury pushing 24' pontoon

    @jlh3rd let's keep it civil
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