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  1. Scott Danforth

    7.4 /454 Gen VI identification

    GM pistons used in the old 454 Mag and some crate motors. However being in a Gen VI block means it was someone's clone I believe an 18.3cc dome
  2. Scott Danforth

    Looking for a very unique head unit

    Looking for a 1-din head unit with a retractable screen. the screen must be retractable. I do not want to see it all the time, only when I need navigation. need true satellite navigation, AM/FM/Satellite radio. would like hands-free for phone calls. most of the new head units rely on android...
  3. Scott Danforth

    Engine size for Wooden Boat?

    this site will not condone over powering. the IMO rules exist for a reason.
  4. Scott Danforth

    2003 chaparral 240 DC power is gone,anybody knows where the DC power breaker is

    check for corrosion on the ground buss
  5. Scott Danforth

    Mercruiser 496 MAG Refresh Thread

    the 8.1 is internally balanced. just align the non-tapped hole with the locating hole in the flywheel.
  6. Scott Danforth

    2003 chaparral 240 DC power is gone,anybody knows where the DC power breaker is

    First, welcome aboard. horn, wiper, etc will go thru the ignition switch.
  7. Scott Danforth

    Mercruiser 120/140

    your mechanic is an idiot. there is the 1990 and older with the 153 tooth flywheel and the 1991 and later with the 168 tooth flywheel. the mounting patterns on the flywheel housing is the same for all years which is the SBC bolt pattern.
  8. Scott Danforth

    7.4 /454 Gen VI identification

    98 RON is basically similar to 93 R+M/2 here in the US AD is correct on checking the cam.
  9. Scott Danforth

    7.4 /454 Gen VI identification

    the cylinder heads are standard 118cc open chambers. the pistons look to be 20 to 30 cc domes. assuming a .030 overbore. the compression ratio is in the 9.6-10.5 range. which is pushing it with iron heads unless you run high octane.
  10. Scott Danforth

    Why o' why?

    What trouble shooting steps have you done to indicate it is the carbs?
  11. Scott Danforth

    Wiring in 2003 seaswirl striper 2601 Volvo Penta Diesel I/O

    From Volvo Penta. https://www.volvopenta.com/en-us/your-engine/manuals-and-handbooks/
  12. Scott Danforth

    Wiring in 2003 seaswirl striper 2601 Volvo Penta Diesel I/O

    The factory Volvo service manual will have the motor related wiring. Everything else is covered by the ABYC wiring colors you can find in the electrical sticky
  13. Scott Danforth

    cannot get fuel to prime to engine. 1994 ranger 361v

    Is the primer bulb in good condition?
  14. Scott Danforth

    7.4 /454 Gen VI identification

    That motor in the pics is already build well over 425hp Measure the bore to see what you have Post the head casting numbers as AD asked in post #2
  15. Scott Danforth

    Cost of a metal box to hold a large home generator.

    ISO containers are 10', 20', 30' and 40'. If the genny has wheels, it's considered a portable generator and has the CO sensor
  16. Scott Danforth

    Volvo Penta 8.1 gas down tubes

    No soliciting
  17. Scott Danforth

    Astro 1970

    Astro started in 1989 and went out of business in 2003 Astroglass was around in the 70s The paperwork (bill of sale, title, etc) is all you need. Without it, you have a yard planter
  18. Scott Danforth

    Cost of a metal box to hold a large home generator.

    If it's a whole house genny, it comes in the sound attenuated enclosure. The radiator fan will keep air moving past the radiator and muffler If you build one, you need to keep air flow thru the most as the CO monitor will shut it down in a box. It will also overheat
  19. Scott Danforth

    Stock Windshield Height?

    And what are you working on?
  20. Scott Danforth

    7.4 /454 Gen VI identification

    The compression ratio needs to be seriously looked at for a marine build. Forged internals generally not needed unless running WOT for a really long time. A full neutral balance rotating assembly will do more to keep the motor together
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