Re: Converting 1972 4hp OMC to CD ignition

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March 5, 2017 at 3:49 am #53842
DAN ANDERSON
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    1977 is the 4hp model (with CD ignition), but like your 1972 motor. You can compare parts you would need there. I believe you will run into several differences in the later ’93 model engine. It is a fully jeweled powerhead with different pistons, rods, etc. Not sure if the parts will all switch over. Never tried it, but they are not of the same family or generation of engines?

    Dan in TN