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Swapping from F20A3 to F20A5

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    Swapping from F20A3 to F20A5

    I have here an Accord with a tired F20A3 motor, I plan on putting in a better running F20A5, but don't want to bother with the whole EFI conversion process. So what I want to know is if the carb intake manifold & all from the F20A3 will bolt to the F20A5 head, and what other problems I may run into on this particular swap? I couldn't find any info from searching the site. It looks pretty simple, but it's the jobs that look easiest that turn out to be the most bitchiest lol

    H22A Vigor
    SR20 Accord

    #2
    Originally posted by A18A View Post
    I have here an Accord with a tired F20A3 motor, I plan on putting in a better running F20A5, but don't want to bother with the whole EFI conversion process. So what I want to know is if the carb intake manifold & all from the F20A3 will bolt to the F20A5 head, and what other problems I may run into on this particular swap? I couldn't find any info from searching the site. It looks pretty simple, but it's the jobs that look easiest that turn out to be the most bitchiest lol
    The head ports are different (The EFI head has injector spray cutouts)
    There are a few other differences, such as: The EFI motor has a different camshaft, and compression ratio, and for memory the valves are a different size.

    I'll see if I can dig up some of my old stuff, and give you a better answer tomorrow.


    Car Safety / General Servicing Checks --------Basic suspension checks

    My 5.7 LS1 Holden Ute

    A "Finished" project car is never finished until its been sold.

    If at first you don't succeed, Try again. Don't give up too easily, persistance pays off in the end.

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      #3
      I figured it would be something like that, sounds just like the A20 with their carbs & EFI differences

      H22A Vigor
      SR20 Accord

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        #4
        Originally posted by A18A View Post
        I figured it would be something like that, sounds just like the A20 with their carbs & EFI differences
        Yea much the same, I remember looking into the A20 EFI conversion also, and gave up on the amount of work required.

        You know, we really should meet up one day


        Car Safety / General Servicing Checks --------Basic suspension checks

        My 5.7 LS1 Holden Ute

        A "Finished" project car is never finished until its been sold.

        If at first you don't succeed, Try again. Don't give up too easily, persistance pays off in the end.

        Comment

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