Recent content by TWPilot

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    Cyl Head

    Thinking of pulling my cylinder head to take a look at the bores and also to ascertain the amount of carbon buildup surrounding the rings- perhaps that's the reason for my low (95psi) compression. For a 30 year old motor, which the head gasket is NOT leaking- would this be a wise move, as I'm...
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    Bad plug wire- 89 force 85hp

    17X13.5 Aluminum Cupped
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    Bad plug wire- 89 force 85hp

    Only thing that did was improve throttle response. It's still "capping out" at 4300rpm. At this point, it's probably just tired and requires a rebuild. I'll just enjoy it this summer- or until it truly gives up. If it lasts the summer, I'll rebuild it over the winter. Once again, thanks for...
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    Bad plug wire- 89 force 85hp

    Thanks for the extra replies, guys. The tach is an aftermarket generic one- and unsure of the settings (I followed the directions for the set-up). I replaced all the gauges when I replaced the stringers/transom/floor, and changed nothing on the motor. The rpms were the same as the factory...
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    Bad plug wire- 89 force 85hp

    16ft Glastron- 17p prop
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    Bad plug wire- 89 force 85hp

    Welp, finally had an actual problem on the water last weekend. Was going "great" at only 4300rpm, and all of a sudden, it bogs down and will now only do 3000rpm. I get home, check compressions- and everything is as it was (95psi on all three with a cheap HF gauge). Start it up, and pull #1-...
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    Lack of power

    Too rich on the low idle screws.
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    1989 85hp WOT only 4300rpm

    Thanks guys. Will do the tug test. It's an 89 Glastron 16', with a 17p prop. It had a 21p prop on it when I bought it, and would only get to 4100rpm. I think I may have put a bit more weight in it with the "extra" fiberglassing I did- i.e. I layered more than stock over the new...
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    1989 85hp WOT only 4300rpm

    Same problem as last year. Had the boat out on the water yesterday. Over the winter, I replaced the reeds, reed backers, screens and gaskets on the recirculation system, thinking that was the last issue. Screens were gunned up, and it looked as though the backers were holding the reeds flat...
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    Diameter

    I've gone through 5 pages, and haven't truly found any post regarding diameter. From the sticky: 1989 Glastron Sierra 160 Force 85hp Original prop (handbook): 13.25x17 Original performance (handbook): 5k-5500rpm, 37-45mph When I purchased this little boat (third owner), it had a 21p prop on it...
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    1989 Force 85 HP - Bad Reed Symptoms

    Would a faulty reed valve affect high RPM? Mine does fine at idle, and doesn't hesitate increasing RPM, but holds at 4200, and will not go any faster. I've checked compression- all three are equal (albeit low at 105psi, but that could be the gauge). Timing is dead-on, I've rebuilt the fuel...
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    Is my 85hp producing enough power?

    Last fall, I bought an 89 Glastron 16ft, with an 85hp Force and a 21p prop. After changing plugs and rebuilding the carbs, she would only get to 4k rpms which was good for 21mph. Seems slow, but it was the end of the season, and I was going t rebuild the transom, stringers and floor...
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