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    Prop question?

    Hi all. I recently bought a 16' runabout with a 1976 Mercury 115HP outboard and it came with an aluminum 13 x 17P prop and when I tested it on the water with 3 people, 15 gal. gas, 6 1/2 hp kicker (basically a full load) it was revving above 6000RPM ( my tack only goes to 6000) and only giving...
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    Changing the prop and seal on a 1976 115hp

    Hi there. I have a 1976 1150 thunderbolt engine and I need to replace the prop seal as I am getting water in the leg oil and the water pump seals (upper and lower) were just done with an impeller change along with new drain/fill plug gaskets and I can't think of anywhere else water could be...
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    1976 Merc 1150 crackling during 1st 2 or 3 seconds of heavy throttle

    Hello. I have a Mercury, 1976, 1150, thunderbolt ignition that was into the shop recently and had the timing checked and spark checked and I have done a compression test on it and all cylinders are fine (140,155,155,155,155,150) so I took it out yesterday for it's maiden voyage and it ran very...
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    Proper way to do compression test on 1976 1150 thunderbolt

    Hi all. I'm new here and new to boat repair (although I have done my share of repairs on our vehicles over the years). My question is: How do I "safely" do a compression test on a newly acquired 1976 Mercury 1150 Thunderbolt? Having read through all the posts on compression tests I come away...
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