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Engine Swap : Fuel injection or carb?

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  • Engine Swap : Fuel injection or carb?

    I have a 1997 5.7 engine with roller cams and vortec heads, I have a cast iron 8 bolt intake manifold with an Edelbrock carb. mechanical fuel pump. I found a boat with a cracked block for sale. 1999 sea 210. has a 5.7 merc. with fuel injection. which way should I go......swap carb set up for fuel injection? Is this feasable? could I do it the other way....keep carb set up? Will there be wiring harness issues or other issues I dont know to ask about?

    thanks

    Ed

  • #2
    Re: Engine Swap : Fuel injection or carb?

    Originally posted by 84EdH View Post
    I have a 1997 5.7 engine with roller cams and vortec heads, I have a cast iron 8 bolt intake manifold with an Edelbrock carb. mechanical fuel pump. I found a boat with a cracked block for sale. 1999 sea 210. has a 5.7 merc. with fuel injection. which way should I go......swap carb set up for fuel injection? Is this feasable? could I do it the other way....keep carb set up? Will there be wiring harness issues or other issues I dont know to ask about?

    thanks

    Ed
    Ayuh,.... You can go either way ya want,...

    The Efi motor needs it's own wirin' harness, as does a carbed motor....

    Yer talkin' fully dressed bobtail motors, Right,..??

    Comment


    • #3
      Re: Engine Swap : Fuel injection or carb?

      Bondo, thanks for the info:

      yes, the sea ray has the engine still installed with all hookups. my engine has everything attached with wiring harness, carb, manifold etc. (even manifolds). I kinda hate to take apart my new Edelbrock carb, manifold etc. but if efi is a big plus, then maybe that is the way to go.

      Do you have an opinion on the benefits of efi vs. carb?

      Comment


      • #4
        Re: Engine Swap : Fuel injection or carb?

        I like a carb better as there is less bs to go wrong... no sensors and what not. But you will get people say efi is easier to start, is more efficient, etc... So it's whatever you want and whatever you are more comfortable with.
        1990 Stingray 536ZPX 4.3 Mercruiser - SOLD
        2001 Glastron GX185 4.3 Mercruiser - SOLD
        2012 Yamaha SX190 1.8L Jet Boat
        Tow rig - 2013 Silverado 2500HD Duramax

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        • #5
          Re: Engine Swap : Fuel injection or carb?

          thanks for your advice. I wonder if there would be wiring issues using my carb set up and wiring harness on a boat set up for efi?

          Comment


          • #6
            Re: Engine Swap : Fuel injection or carb?

            The "main harness" (engine to dash) will be the same. There may be some gotch ya's but nothing serious!

            Make sure the EFI engine runs before you get everything in a couple baskets!

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            • #7
              Re: Engine Swap : Fuel injection or carb?

              yes, I have a couple of those baskets now. Need an alpha 1 outdrive? log type exhaust manifolds, rochester carb etc. etc. etc. !!!

              thanks

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              • #8
                Re: Engine Swap : Fuel injection or carb?

                I prefer EFI. Yes there are sensors, but these things have made vehicles more reliable, not less.
                Torque gets you there. Horsepower gets you there in time for dinner.

                Comment


                • #9
                  Re: Engine Swap : Fuel injection or carb?

                  Originally posted by 84EdH View Post
                  thanks for your advice. I wonder if there would be wiring issues using my carb set up and wiring harness on a boat set up for efi?
                  NOPE. Plug and play baby. You have the EASIEST switch to Fuel Injection ahead of you. Do it! You won't be sorry.

                  Comment


                  • #10
                    Sign up today
                    Re: Engine Swap : Fuel injection or carb?

                    Well due to the vintage.. going efi may be a total can of worm's. Most everything has been discontinued or expensive. Now if your a efi nut thats another story...It would be very simple and cost effective to carb your way home. Now as TilliamWe has said plug and play and if its all up to spec and running smoothly that works too. But one ecu failure and wham...about a grand if you know what you are doing.
                    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"

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