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  1. H

    spark plugs

    Anybody know what the proper spark plugs are for a 1983 Johnson 140hp V-4? Is there anything better than the surface gap plugs I've been running?
  2. H

    1983 johnson V-4 140hp

    I have a l983 Johnson 140hp V-4. It is fairly fresh with 128 in one cyl and 130 to 135 in other three. It runs out of gal on top in. I run a 19 pitch OMC stainless prop. Reaches 5000 rpm for about 4-5 seconds then falls on it's face. Frankly, I think it hit that rpm with a 21 pitch. It also...
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