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Converting EFI to Carb 4.3 Mercruiser

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  • Converting EFI to Carb 4.3 Mercruiser

    What would be involved and necessary to convert an EFI TBI setup to Carb? This is a 2000 Model year engine. The new ECM conversion kit is just too costly to purchase. Considering converting to Carb to avoid the 3500.00 expense.

  • #2
    Re: Converting EFI to Carb 4.3 Mercruiser

    Originally posted by get-r-done View Post
    What would be involved and necessary to convert an EFI TBI setup to Carb? This is a 2000 Model year engine. The new ECM conversion kit is just too costly to purchase. Considering converting to Carb to avoid the 3500.00 expense.
    What is the problem with the old system?? There a little eaiser to repair than you might think.
    Stickly a opinion your mileage may vary.

    Horsepower is how quickly you can get to the wall
    Torque is how far you move the wall"

    Comment


    • #3
      Re: Converting EFI to Carb 4.3 Mercruiser

      He obviously hasn't read your reply to his other post TG.

      http://forums.iboats.com/showthread.php?t=279700
      Don S.


      Please, no PM's (Private Messages) regarding boat/engine problems.
      That is what the forums are for.
      Only forum/moderator issues will be answered in PM's.

      Comment


      • #4
        Re: Converting EFI to Carb 4.3 Mercruiser

        Ive been there..It seems to me your dropping a efi motor into a boat that is not wired for it..duh.. so take off the intake ..pull off all the wiring and get that pigtail i posted in the other thread opps and probably a new elect fuel pump

        Your going to have to rewire the motor there are no patchwork..work arounds..Its seems like a big job but its not as long as either you or mech has a full understanding of the wiring and what he needs to do.

        1. new fuel pump your 4.3 does not have provisons for a mech pump
        http://www.ecrater.com/product.php?pid=4057198

        2. There's the plug it should plug right into your old boat
        http://www.cpperformance.com/detail.aspx?ID=838

        3. One good person who knows wiring its not that tough if you know where your going
        Stickly a opinion your mileage may vary.

        Horsepower is how quickly you can get to the wall
        Torque is how far you move the wall"

        Comment


        • #5
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          Re: Converting EFI to Carb 4.3 Mercruiser

          What is the problem with the old system?? There a little eaiser to repair than you might think.

          Comment

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