Welcome Guest - Sign Up today
Welcome Guest - Sign Up today

Announcement

Collapse
No announcement yet.

5.8 efi to carb conversion

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • 5.8 efi to carb conversion

    After much tinkering with this blasted efi engine i decided to convert to tried and true Carburator. I know i have to get the manifold, coil, distributor and the carb but what other things do i need for this to happen? Engine is 351 5.8 fuel injected omc from a four winns 200 horizon.
    Last edited by Galvez83; March 17th, 2020, 06:38 PM.

  • #2
    a fuel pump for a carb and associated safety switch
    NO PERSONAL QUESTIONS, THIS IS WHAT THE FORUM IS FOR.

    Comment


    • #3
      Originally posted by Galvez83 View Post
      After much tinkering with this blasted efi engine i decided to convert to tried and true Carburator. I know i have to get the manifold, coil, distributor and the carb but what other things do i need for this to happen? Engine is 351 5.8 fuel injected omc from a four winns 200 horizon.
      coil is probably ok, depends on the type of dizzy you get.

      also need a fuel pump like GA mentioned. either stay electric, or install a mechanical.
      Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

      1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

      Past Boats
      1970 Wooster Hellion - Merc 9.8
      2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
      1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

      What’s behind you doesn’t matter.Enzo Ferrari

      Comment


      • #4
        Keep in mind you must use a marine carb, that will have J tubes and is less likely to leak round the throttle shafts.
        If you use a mechanical fuel pump (cheap & reliable) it must be a marine unit you must hook up the overflow hose from the fitting on the pump to the fitting on the air horn of the carb (1/4" tygon tubing yellow stuff). If you use a low pressure electric pump there is no need for the overflow hose (IIRC).

        https://www.holley.com/products/fuel...arts/0-80319-1
        this one is calibrated to work with the Ford 351 and is probably the same thing both OMC and Volvo used when they were selling carbed engines.

        https://www.crowleymarine.com/johnso...cfm?mdl=XRGH8J
        this will give you an idea of the parts you will need. If the fuel pump is NLA from OMC/BRP, it may be available from Volvo Penta, if not then you have to find out what Carter pump was used on these. Or then just use a low pressure electric pump with the safety switch (oil pressure).
        http://www.volvopentastore.com/Fuel-...view_id.792209
        V/P used the same engine same components.
        They list that pump as available but do not pay the robber baron price, search around to find the Carter part number and you should not pay more than about $125 for it.

        I forget from your original post, is this an original OMC Cobra dog clutch or the joint venture cone clutch (SX Cobra)? If its the former, the challenge is to get a distributor that will work with the OMC ESA system. If you could by chance find an original points distributor it will work, as long as the wiring is the same as the points system. If you wind up going electronic, there may be a need to replace the ESA module, or wire it like a Merc Alpha. If you have the SX Cobra or the OMC King Cobra cone clutch, then this should not be an issue...but never having done it...you'll be doing some figuring here...
        1988 Four Winns 200 Horizon
        4.3 OMC Cobra

        98 Jeep Grand Cherokee 4.0 Selectrac
        07 Jeep Grand Cherokee Limited 5.7 Quadradrive II

        "While air doesn't freeze....rust never sleeps"

        Comment


        • #5
          Sign up today
          PS looked back, you have a '93, so its the dog clutch, and your ESA must work or else you won't be able to shift to neutral easily.
          1988 Four Winns 200 Horizon
          4.3 OMC Cobra

          98 Jeep Grand Cherokee 4.0 Selectrac
          07 Jeep Grand Cherokee Limited 5.7 Quadradrive II

          "While air doesn't freeze....rust never sleeps"

          Comment

          Working...
          X