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  1. Scott Danforth

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

    because the LS motors were used exclusively automotive after 2003 and now the LT motors are coming in the SBC hasnt been used automotive wise since. however the industrial motors (generators, trash pumps, fork lifts and boat motors) were used after. on the LS and the LT the reluctor ring is a...
  2. Scott Danforth

    Adding 100+hp. Would you re-prop ?

    remember, your drive is limited to 5500 RPM or less. Circle track motors spin to 11k. the XM270 is a small cam compared to what is normally in a circle track motor. it has almost no overlap and runs out of breath at 5300 RPM
  3. Scott Danforth

    I need help wiring my mercruiser 470

    doubt it. only 3 out of 1 million coils changed are actually bad. test first. wire the boat like the diagram
  4. Scott Danforth

    I need help wiring my mercruiser 470

    you will burn the points. wire it like the diagram
  5. Scott Danforth

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

    just tell the machine shop you want to run more than .42" lift. they will take it from there. https://www.summitracing.com/parts/ado-10190917 I simply googled 1996 chevrolet 350 crankshaft reluctor ring
  6. Scott Danforth

    I need help wiring my mercruiser 470

    welcome aboard. just wire it like the picture. slave solenoid goes to the S terminal on the starter coil gets wired to the I/R terminal on the starter in parallel with the resistor wire.
  7. Scott Danforth

    228 oil pan/timing cover leak

    Cg of motor is about 4" above the crank without the exhaust manifolds and about 5" above the crank with the manifolds Agree with Grub on lubing the main pivot
  8. Scott Danforth

    Long term engine storage prep question

    I woul loosen the rocker arms and bag the motors
  9. Scott Danforth

    Create storage in Hurricane 217 Sd

    I would pull the cup holder and then use either a mirror or a bore scope and look. You may find room to add storage, or you may find that the area has structure, or flotation foam or something else
  10. Scott Danforth

    Adding 100+hp. Would you re-prop ?

    You are a bit optimistic on your HP out of a stock stroke 4.03 bore motor with a marine cam. You will be about 35-40hp more with the XM270 cam over the original cam I would build a stroker Regarding the prop, you will need to test first
  11. Scott Danforth

    1987 Bayliner Capri 3.0 - ignition switch does not turn on starter

    Start at the battery...... Pull apart and clean every connection from the battery to the key switch with 150 grit or a wire brush, then seal the connections with marine electrical varnish.
  12. Scott Danforth

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

    Stock vortec heads have a maximum lift of .42 to .45 befor the spring keeper interferes with the seal. The fix is normally to cut the valve stem down and change to better seals. The 1.6:1 rocker arm pushes the stock valve keeper into the seal Regarding your question on the reluctor...
  13. Scott Danforth

    To Keep/Repair or Junk it? 1985 Bayliner Capri 1400

    if your aim is for a boat with not too much TLC, you need to buy a boat that is between brand new and 5 years old. not be looking at 37-38 year old bayliners with rotten transom/stringers/deck the real reason the transom cracked it the wood on that boat started to rot out in about 1990 and was...
  14. Scott Danforth

    1987 Bayliner Capri 3.0 - ignition switch does not turn on starter

    welcome aboard. being a 1987 bayliner, most likely this is an OMC what diagnostics have you done?
  15. Scott Danforth

    Will OMC Engine/Drive Match Mercruiser- Plug & Play?

    not sure why you would ever want to buy anything that has OMC in it. many parts are NLA the 92 Sea Ray needs to be seriously looked at. the motor and drive most likely came out because the hull is rotten with a bit of work, you can put a complete Mercruiser longtail in the location that...
  16. Scott Danforth

    228 oil pan/timing cover leak

    Put it on an engine stand
  17. Scott Danforth

    Rubbing compound for heavy oxidation

    wet sanding with the 600 and 800. the other 3 are compounds recommended by ondarvr
  18. Scott Danforth

    Ultra Black or RTV silicone?

    for oil, ultacopper is better than the ultrablack. for the water pump, the ultra grey is what to use.
  19. Scott Danforth

    Rubbing compound for heavy oxidation

    600 grit, followed by 800 grit, followed by aquabuff 1000, followed by aquabuff 2000 followed by 3M finessit if you are still north of Bradenton, Fiberglass Coatings in St Pete has Aquabuff on the shelf.
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