Search results

  1. Scott Danforth

    1998 Mercruiser 5.7 TBI Backfiring Under Load & Loss of Power

    the anti-siphon valve would be hard to pull air thru. what you are seeing is normal. did you check compression? all cylinders between 140 and 150 psi? did you check fuel pressure? 30psi?
  2. Scott Danforth

    1985 Starcraft porpoising issue. Prop??

    how are you triming it? should only need to trim up just a tad after the holeshot. once it starts porpoising, tap the trim button once or twice to get it to settle down you never want to lug a motor, so no, dont run a 19p. I am assuming you weighted the boat to make sure you are not carrying...
  3. Scott Danforth

    1994 Tracker Fishin Barge *new

    if you want diagrams, carb setting proceedure, etc.....you will need to go here. https://publications.brunswick.com/ and get a factory service manual. that will cover the motor. regarding the sketchy tank repair. its your boat. I wouldnt trust it to last.
  4. Scott Danforth

    Fuel vent question

    vents are supposed to have a vertical loop in them to make a "P" trap or they are to be the integral P trap style. see figure 4 in the fuel system section in the link https://www.uscgboating.org/assets/1/AssetManager/FUELSYSTEM1.pdf
  5. Scott Danforth

    Chasing Down Fuel Delivery Issue

    Dave, the crud fuel makes an OK bonfire...... Just saying
  6. Scott Danforth

    Volvo penta engine tag missing numbers

    If the exhaust manifolds were left to freeze, the block and heads most likely also have cracks in them What is the back story on this boat you now should be pressure testing the cooling water jacket?
  7. Scott Danforth

    Boat floor soft only around ski locker

    The floor on a boat is the last thing to rot after the transom and stringers. Everything you need is in this sticky. https://forums.iboats.com/threads/how-tos-and-other-great-information.283508/ Start with link 14. Read it thru in its entirety
  8. Scott Danforth

    Bent push rods….calling engine builders

    GM says 20ft-lb
  9. Scott Danforth

    1996 Four Winns 5.8 Duo drive Fuel pump location

    Check idle with throttle cable disconnected
  10. Scott Danforth

    Bent push rods….calling engine builders

    yes, all 1996 and later SBC motors have roller lifters. The other change GM made with the Vortec heads is non-adjustable self-aligning rockers mounted to pressed in studs Unless you are running aftermarket adjustable valve train, you have non adjustable rockers. You should have a step in the...
  11. Scott Danforth

    Bent push rods….calling engine builders

    are you sure you have adjustable valve train? GM went to non-adjustable with the vortec heads. so if you have stock heads, you tighten down each rocker retainer to 20 ft-lb
  12. Scott Danforth

    5.8l efi idles too fast

    he hasnt been back for 9 months
  13. Scott Danforth

    Strange boat disease strikes.

    dont you members of the Starmada rebuild them every few years......
  14. Scott Danforth

    Boat Horn Confusion

    check your grounds at the ground buss
  15. Scott Danforth

    2007 Volvo Penta 5.0 GXI Fuel Pump issue

    low pressure pump draws from tank to fuel cell. high pressure pump pushes from fuel cell to motor. the pump either runs or it doesnt. the pumps are airtex/carter units in a fuel cooler made by a heat-exchanger company.
  16. Scott Danforth

    Strange boat disease strikes.

    y'all need to understand a boat is designed to last 15 years and be replaced. https://forums.iboats.com/threads/perspective-of-fiberglass-boat-design-life.683703/
  17. Scott Danforth

    Mercruiser 3.0 1988

    manuals are copywrite protected you can buy used on ebay. https://www.ebay.com/sch/i.html?_nkw=mercruiser+manual+10 I believe its manual 10.
  18. Scott Danforth

    What Brand of Brake pads are best quality? What do you guys use for quality?

    FYI Magneti Marelli is a Tier 1 OEM parts supplier that supplies almost all automotive brands with parts. they even supply mercruiser with fuel injectors and other bits. most Tier 1 suppliers you never heard of, however you probably have had their parts on your vehicles.
  19. Scott Danforth

    closed cooling

    if the heat exchanger is properly designed, it can work with the lower flow of the Alpha raw water pump. going full system, the heat exchanger will be at least 5" in diameter with a core at least 21" long for a low output 5.7 liter a full system has twice the BTU capacity as a half system are...
  20. Scott Danforth

    1998 Mercruiser 5.7 TBI Backfiring Under Load & Loss of Power

    impellers are NOT self priming. so when you fire up the boat, the whole outdrive must be under water to have the raw water pump flooded. this is why you must use a hose and muffs with enough water pressure and flow to operate the motor when on a trailer. 4000 RPM is way too low. the knocking...
Top