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Thread: 84 Prelude Auto to Manual

  1. #1
    DX User
    Join Date
    Jan 2019
    Vehicle
    84 Honda Prelude
    Location
    Washington
    Posts
    2

    84 Prelude Auto to Manual

    I recently bought an 83 prelude parts car with a manual transmission in it. The motor and transmission have about 130k miles on it. I pulled the motor last weekend and realized there are a few differences between the 83 and 84. One of the differences was the engine code, the '84 being a et2 and the 83 an es1, 2, or 3. Looking through engine parts, the only differences I could see were either in the intake manifold gasket or the exhaust manifold gasket. I'm wondering if the transmission will bolt up to the et2 block. I think it will, but I would like to confirm it here.

    The 84 prelude has 50k miles on it. I'm torn on if I should see this project to the end, or just leave it untouched.

    My possible plans are rebuilding the es1 motor, and installing a weber carb, or only swap the transmission in there.

    -0-jpg



  2. #2
    LXi User
    Join Date
    Aug 2002
    Vehicle
    '85 lude
    Location
    houston
    Posts
    514

    Re: 84 Prelude Auto to Manual

    Trans should be the same... The carb ones have smaller axles and flyweel/clutch. Way back when I was broke and crazy I swapped the larger diff into my carb trans and ground down the housing to fit 2.0 axles and flywheel.
    Although, that said, I know 84+ is the same, 83 did have some oddities but I believe you should be fine. I've only ever seen an 83 one time, long ago. The 83 is CVCC, you are not going to want that head.

  3. #3
    DX User
    Join Date
    Jan 2019
    Vehicle
    84 Honda Prelude
    Location
    Washington
    Posts
    2

    Re: 84 Prelude Auto to Manual

    I've decided to stick with the motor in the '84. I will probably start working on this project again next week starting with taking the glass out. Then I have to get rid of the parts car so I have room to work.

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