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  1. Scott Danforth

    Can't find 1992 Mercruiser 4.3 Pre-Vortex intake manifold

    I would do a threaded rocker stud conversion (the pressed in studs sometimes pull out) and run adjustable rockers. generally not needed, however that is my preference. I also like to remove the casting flash on the exhaust ports and combustion chamber prior to bolting the heads on. again...
  2. Scott Danforth

    Can't find 1992 Mercruiser 4.3 Pre-Vortex intake manifold

    why?
  3. Scott Danforth

    New 'Threads' ???

    Ted.... there is the "whats new" button, however that is the recent new posts just like the "new posts" button. Im just glad the majority of the VB5 evil has been banished.
  4. Scott Danforth

    Can't find 1992 Mercruiser 4.3 Pre-Vortex intake manifold

    any 1995 and older intake will fit your 1992 motor without balance shaft. since you have to buy a new manifold.... I would update the heads to vortec and run this manifold https://www.edelbrock.com/marine-vortec-v6-4-3-intake-manifold-2519.html
  5. Scott Danforth

    4.3 Oil Drain System and Timing Cover

    I added the drain hose to the last two engines. I loved it about the 5.0 in the Sea Ray to want that feature going forward. yes its slow. however you can pull the hose out the garboard plug, then drain it into your oil catch pan while you make a sandwich, get a beer and tend to other things...
  6. Scott Danforth

    Mercruiser 5.0 TKS vs 4.3 MPI

    you should do some research. and you should talk to many of the pioneers in the EFI world a carb will always atomize better than an intake mounted injector nozzle (again, do your own research). not until you get to direct injection with variable valve timing can an EFI motor make more power...
  7. Scott Danforth

    1988 Bayliner 2560 Trophy with 5.7 GM and OMC Stern

    There hasnt been a RH engine (reverse rotation) with a stern drive... There also hasnt been a RH drive motor with inboards since the early 80s Even if your 1988 boat had 2 or more motors, they would be standard rotation
  8. Scott Danforth

    Re-secure Snaps?

    They make oversized screw snaps, that would be my fist choice
  9. Scott Danforth

    Mercruiser 5.0 TKS vs 4.3 MPI

    No, i have been involved with engines and turning wrenches since I was 3. Definately not thinking MPI. I know the limitations of EFI vs Carb, I know the benefits, limitations and realities. Prove to me that EFI adds more power. Having been involved with EFI motors since the 80s, unless you...
  10. Scott Danforth

    Automatic bilge pump

    I wont click on any PDF's for security reasons. however if you had it linked to the attwood site, then maybe I would. many OEMs have a switch that in one position is automatic (being feed by the batteries direct) and the other the manual side. most available schematics are only the engine...
  11. Scott Danforth

    5.0L MPI Idle Air Control Valve OEM vs Aftermarket

    its threads like this that make me glad I have a carb......
  12. Scott Danforth

    speedo gauge wrapped around.

    no way enough air coming in the pitot tube would spin the speedo around. because of the density difference of air and water, you would have had to be towing about 230mph in air to read about 50mph on the speedo. most likely the bordon tube in the speedo simply broke or the spring came...
  13. Scott Danforth

    Considering a swap

    I would build a pair of 377's or use used blocks and build 383's
  14. Scott Danforth

    Automatic bilge pump

    the float switch is what makes it automatic. the float switch goes up when water is in the bilge and then the pump comes on...... the water level drops and the float switch drops, shutting the pump off. some of the "sensing" bilge pumps cant get the last bit of water out of the bilge so they...
  15. Scott Danforth

    Volvo Penta 5.7 AQ271C Electric Fuel pump coversion

    put a dab of grease on the fuel pump push rod, holds it in place
  16. Scott Danforth

    Volvo Penta 5.7 AQ271C Electric Fuel pump coversion

    'cuz the V6's are a little daft....LOL:p:p:p:p:p:p:p
  17. Scott Danforth

    Mercruiser 5.0 TKS vs 4.3 MPI

    the 5.0 is an SBC. any SBC powered boat that comes with a 2 barrel cast-iron intake such as the 220hp can be upgraded by bolting on a 4-barrel intake in either cast-iron or dual-alloy aluminum. I suggest the edelbrock marine intake and the edelbrock 1409 marine carb. that will take the 220hp...
  18. Scott Danforth

    Two Trolling motor on one Inflatable boat

    the OP never mentioned trolling or fishing. only that they wanted to go faster with two trolling motors. generally a "trolling motor" usually electric as Jim mentioned. nothing was ever stated about fishing or trolling until Sea Rider made that assumption in post #3 until the OP comes back...
  19. Scott Danforth

    Best adhesive remover?

    just so you are aware, your 1978 fiberglass tri-hull most likely has soft transom and stringers as well as water-soaked foam - especially if it was exposed to the elements for several years like you mention. your carpet may be the least of your issues. if you have to replace the transom and...
  20. Scott Danforth

    Volvo Penta 5.7 AQ271C Electric Fuel pump coversion

    it is a carter marine pump, it is $49 on Summit's site, and most importantly, why do you want or think you need to change it? they will last for about 4000 hours on the boat with minimal maintenance (like not sinking the boat)
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