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  1. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    To echo what @Scott06 mentioned on reversion. I have high speed GoPro videos of the exhaust pulses being sucked back into the exhaust elbows from over a foot past the outlet at certain RPMs
  2. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    Since the salt water motor most likely does not have a heat exhangers, assume you need to start with a new block and heads. Machine shop will advise What ratio DP? Assume 1.95:1 What props? What is the wet weight of the boat (actual scaled weight). Dry weight is 5200# for the Chap 256...
  3. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    the small block chevrolet has gone thru 6 minor generation changes in the 70+ years its been around. just the 350 (5.7) has been around for 5 of them. With power from 130hp to 600 hp naturally aspirated....they are not all the same. building a marine motor is also not the same as a truck or a...
  4. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    there are better marine ignitions than MSD
  5. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    Not Marine safe, not SAE J1171 compliant
  6. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    For decades, Volvo Penta used Holley vs Edelbrock/ Rochester
  7. Scott Danforth

    Car Hood Boats

    That AD truck hood would be worth a few hundred today
  8. Scott Danforth

    Old motors DEMAND to be retired when they are 65 years old..

    You started this thread
  9. Scott Danforth

    Old motors DEMAND to be retired when they are 65 years old..

    Yes
  10. Scott Danforth

    A nice tip but it’s not about stern drive storage in the up position

    Your pump will outlast the cylinders by decades
  11. Scott Danforth

    Planning out installing NMEA 2k

    Other than ability to control volume from the screens..... Not a single thing
  12. Scott Danforth

    Did Water Get Into My Gear OIL?

    Based on the rusty u-joints from the other threads, your input shaft seal is one of the suspects
  13. Scott Danforth

    repowering 2006 Chaparral volvo 5.7 with stroker.

    Reversion is a function of cam profile, compression ratio, ignition timing, and exhaust design. Check with MEFI Bob on the ECM if he can reprogram your ECM before you do any engine work I personally would ditch the EFI on the SBC if building a stroker If building an SBC stroker, I would go...
  14. Scott Danforth

    Can I Tell if Water is Getting into the U-Joint Bellows?

    You have to pull the drive once a year to inspect the alignment, U-joints and gimbal bearing along with the bellows Just do the full annual maintenance routine
  15. Scott Danforth

    restoring painted gel coat

    400 will work, however your looking at 2 years of sanding There is a reason it was painted. You will most likely find repairs below the paint The gel is only about 0.020-0.030" thick from the factory Most likely, you will have to sand the whole hull with 80 grit and re-spray, the gel...
  16. Scott Danforth

    Old motors DEMAND to be retired when they are 65 years old..

    Look up phoebus cartel. Planned obsolescence is in every single man-made object
  17. Scott Danforth

    A nice tip but it’s not about stern drive storage in the up position

    PTT cylinder seals last between 12-20 years. Reseal as needed and you don't need the trailing clips
  18. Scott Danforth

    Trailer fit?

    Either the trailer is way too long, or the boat is too far forward
  19. Scott Danforth

    Bottom paint around transom assembly

    that transom assembly already has an epoxy patch on it. I highly recommend replacing the whole transom assembly.
  20. Scott Danforth

    Best slip on shoes?

    I have about a half-dozen different brands of slip-in shoes, and about a dozen pair. the ones I wear the most are the canvas crocks santa cruz (cheap from Amazon) . the ones I wear the least are the margarittaville boat shoes none of them offer the support I need None of them last longer than...
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