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  1. J

    timing setting 1980 omc 800 stringer 350 GM

    read all the posts and threads first. nothing definative What do I set my timing on my boat below? Seloc manual says 13 BTDC. An OMC mechanic (good one) who worked on my boat a few years back said to set at 7 BTDC. I also read that the fuel today has alchohol in it and that is the reason...
  2. J

    omc exhaust risers

    I am changing out cracked manifolds. How vulnerable are the risers to cracking? I am just wondering if I should go ahead replace. I soaked them in diluted solution of muriatic acid to clean and don not see any signs of failure. Any suggestions on a vendor to purchase exhaust components from-...
  3. J

    what horsepower is my OMC

    1980 seaswirl 350 gm(goodwrench) 800 stringer 2bbl rochester. Given configuration, can anyone tell me what horsepower this is for parts ordering purposes 200, 230 or 260 It's a reman engine I put in a few years ago so probably no OMC part numer on block. Didn't get all the water out of engine...
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