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  1. Scott Danforth

    engine pinging and backfires and stalls

    no, you drop the pan fully and if the builder did his job, he used a rubber gasket which you can pull the pan many many many times prior to replacing.
  2. Scott Danforth

    Fountain feedback

    welcome aboard. without knowing which year fountain, or which motors/drives, its going to be hard for anyone to comments. Reggie designed some good boats...... however with high performance boats comes high performance maintenance and high performance part price tags do you have the...
  3. Scott Danforth

    Short Shaft to long Shaft swap

    start with the parts break down and start comparing power head parts.
  4. Scott Danforth

    What´s the best replacement for AQ271C (or 570) 5.7 GM engine, ideally stroker?

    engines after 1986 were prop rated do not confuse peak hp numbers vs other factors. the AQ271C was a VP spec'd Hi-Po crate motor with a custom spec'd cam. same motor that was police duty. run the casting numbers of the heads thru mortec yourself. not the same heads or intake that GM sold to...
  5. Scott Danforth

    Condensation in exhaust manifolds...

    yes raw water and carb was 140 ish unless hx cooled, then 160 ish EFI and raw water is 160 ish EFI and hx cooled is 180 ish cant explain why the 4.5 would have a 140 T-stat the emissions must be on the raged edge.
  6. Scott Danforth

    Carb Recommendations for 5.7L Vortec?

    holley side https://www.summitracing.com/parts/sce-355-1 manifold side https://www.summitracing.com/parts/sce-3584-1 modify as needed with gasket punch for the holes
  7. Scott Danforth

    Condensation in exhaust manifolds...

    remember, you have water flowing thru the exhaust manifolds all the time regardless if the thermostat opened or not because you were on the hose, your motor never got up to temp so you would have condensation or the slight reversion at idle that the 4.3 suffers
  8. Scott Danforth

    Carb Recommendations for 5.7L Vortec?

    or use a tubing bender and bend the two legs of the fuel log.
  9. Scott Danforth

    Multiple layers of fiberglass and laminating PE resin

    I normally try to do all my layup and then after gel, spray PVA over the area to get the last layer of gel to fully kick Then again, in the Florida heat, sometimes the resin kicks fully in the bucket and melts the bucket
  10. Scott Danforth

    Carb Recommendations for 5.7L Vortec?

    90 degree fitting
  11. Scott Danforth

    Hi couple of questions from the uk

    you cant use epoxy with 1708. you need the styrene in the poly to dissolve the binders in the CSM stitched to the 1700 cloth. I would have just used poly. regarding the aluminum screw strips. the screws should have gone to the aluminum. however most boats suffer from very shoddy workmanship...
  12. Scott Danforth

    Carb Recommendations for 5.7L Vortec?

    my dual plane manifold has a reduced height divider I did basically turn a 4-hole to a 2-slot. currently have a 1.25" thick spacer
  13. Scott Danforth

    7.4 L29 cylinder drop test netted no change

    what are your compression numbers? are you prop'd right?
  14. Scott Danforth

    1970 mirrocraft sport fisherman

    steel and aluminum together will also have galvanic corrosion. add a bit of moisture and you have issues. just dont add anything caustic..... but wait.....you have green treated lumber in there. that is caustic to aluminum, the chemicals from the treatment will eat the hull of that aluminum...
  15. Scott Danforth

    Hi couple of questions from the uk

    welcome aboard aluminum is normally bonded in as a screwing strip for things like windows, cleats, etc.
  16. Scott Danforth

    1967 MFG Sprint. Steering cable Help

    that is a fools errand. get a new cable
  17. Scott Danforth

    Carb Recommendations for 5.7L Vortec?

    I normally make my own transition spacers. I start with a 4-hole spacer and a die grinder.
  18. Scott Danforth

    Larson Composite Transom Leaks?

    Knock tests mean nothing Does it leak with the motor running while tied to the dock, or just underway? Use a flashlight, mirror and your phine on a selfie stick and look
  19. Scott Danforth

    over heats above 3500 rpm

    And just above the Oring is the white metal fitting the hose connects to that should be replaced every few years because it corrodes
  20. Scott Danforth

    Dashboard update Four Winns Vista 258 1999

    most of us make our own gauge panels.
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