Search results

  1. Scott Danforth

    Mercruiser 5.0 TKS vs 4.3 MPI

    the carb motor curve will have a higher peak to the torque curve vs the EFI having a flatter curve. this is partially because the cam LSA changes for the induction (reference the Mercruiser HP500 in both carb and EFI.... same HP rating at WOT, slightly different torque curves) the EFI motor has...
  2. Scott Danforth

    Alternator & Cable Upgrades

    there is no debate, not sure why you are coming across as confrontational wireing depends on the alternator you have. Delco, Mando, etc. however there should be at a minimum, the ground cable, the battery charge cable and an excite cable from the ignition (usually purple). you will need to...
  3. Scott Danforth

    Multifunctional Gauges

    first, the seloc manual has more mis-information and wrong information than correct information. what does the factory manual say? second, so you have smartcraft...... however the only gauge shown on your dash that would be smartcraft is still only the tach. and since you dont have a digital...
  4. Scott Danforth

    1997 4.3GS with Holley 4 barrel with flat spot on acceleration at 3500 rpm

    or simply spend $8 on a new power valve. ($11 on amazon if you want it tomorrow)
  5. Scott Danforth

    Dull bassboat

    there are no quick fixes for fadef clear. Your boat was intended to last 15 years and be replaced. Most likely you are into a re-paint or re-gel
  6. Scott Danforth

    Riser Removal w/ Remote Oil Filter Attached

    Use a zip tie and tie off the filter to the alternator
  7. Scott Danforth

    multiple configurations for leaf springs???

    There are about 30 spring configurations and about 20 variations of ratings . So replace what you have with the exact sames style, rating and configuration
  8. Scott Danforth

    Will it Freez

    Not if you leave the motor lowered. Only if you tip it up can water pool in the lower and then freeze
  9. Scott Danforth

    Mercruiser 5.0 TKS vs 4.3 MPI

    points ignition and carb used to be part of IC engines 101. they quit teaching that about 4 years ago. todays "ASE certified mechanics" learn less in year one than a 1985 high school kid in Autos class.
  10. Scott Danforth

    New to boating, new to Mercruiser 3.0 some questions

    the raw water pump came on the engine from GM. its a GM marine pump that fits the 153 (2.5 liter), 181 (3.0 liter) or the 250 cubic inch (4.1 liter) make sure to service your points come spring.
  11. Scott Danforth

    1997 4.3GS with Holley 4 barrel with flat spot on acceleration at 3500 rpm

    2 barrel or 4 barrel? or 2300 or 4150/4160? you payed way too much for a $35 holley rebuild kit replace with same power valve that was in there. soak the main body and the metering block(s) in carb cleaner, then chase each passage with a fine wire or fishing line, then blow out with spray can...
  12. Scott Danforth

    Anything I could do to prevent rusting of internal surfaces?

    first, you are over thinking it. no value in putting a plastic bag over the carb, the whole intake will be off to get to the heads..... drain the gas from the carb and forgetaboutit until you bolt it back on. if you wait more than 6 months, you may need to address the carb with a gasket set...
  13. Scott Danforth

    Mercruiser 470, 2 to 4 barrel carb conversion.

    the 4 barrel will give you about 15 more HP. adding a carb spacer between the 4-barrel and the manifold will help with mid-range. dropping to a 17P and letting the motor sing on the high end will help with a boat load of people
  14. Scott Danforth

    help with running surge brake lines

    its to allow you to easily bleed the system and to allow for expansion to 2 axles. if you want to skip the first Tee and plug, you can do so.
  15. Scott Danforth

    Bravo 3 Sea Water Pump - What's this?

    if there was a trophy for hypercomplexifying a cooling system, Keith and the crew at Mercruiser would win it.
  16. Scott Danforth

    Stringer repair

    you are currently in the tedious small project phase.....to those of us that have been there, great job...... to those that dont understand the level of resto-modifications, the OP is building stuff you cant buy......
  17. Scott Danforth

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

    depends on the boat, however if you want to go big on power, buy a different boat. here is my engine build for the replacement of the warmed over 271C https://forums.iboats.com/threads/bbc-build-dont-tell-the-admiral.666775/ BTW, here is my warm over of the...
  18. Scott Danforth

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

    5k USD for a new to you motor with a heat exchanger and new exhaust manifolds is possibly doable if you were in the US if you can find a good running 1996 or newer GM truck motor, you can save yourself the cost of blocks and heads GMPP block ~ $800 GM vortec heads ~800 a pair modifications to...
  19. Scott Danforth

    2001 mercruiser 305 alpha drive to couple year older 350 engine

    perimeter bolts puts it pre 1985, so at best, its a 1980-1984
  20. Scott Danforth

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

    if you buy it, there is well over $1500 difference. if you build it yourself, there is about $300 difference
Top