Recent content by Okie1985

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    1991 Stratos 290SF Not great speed

    The compression for this engine shows to have a spec of 85-90 psi(this engine has low-compression heads) it was my dads boat and he has been chasing this issue for a while now. He has replaced many parts on the engine with the same result.
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    1991 Stratos 290SF Not great speed

    When I put these plugs in towards the end of the summer last year, of course they were brand new at the time, there was no difference in the way it ran before/after the replacement. Plugs are gapped at 0.030 which is what the manual says is spec
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    1991 Stratos 290SF Not great speed

    Did a compression test this morning after getting the engine warmed up, these are the results, all plugs appear to be burning the same, nothing odd visually
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    1991 Stratos 290SF Not great speed

    Took it out today, at full throttle from an idle, takes about 30-45 seconds to get on plane, and max speed was 34mph @4700rpm trimmed up pretty high, used my depth finder to verify mph from the boat Speedo. Even after it gets on plane, it takes some time to get to top speed. Tomorrow I will do a...
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    1991 Stratos 290SF Not great speed

    I do have a timing light that I keep on the boat, and I have checked all cylinders to make sure they are all firing. And at least that part is good
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    1991 Stratos 290SF Not great speed

    I also just verified from a pic I took while out a couple weeks ago that at WOT it was running 5,000rpm
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    1991 Stratos 290SF Not great speed

    I apologize that is something I should have had prior to making this post, I will know for sure Saturday, but last time I had it out I believe it was about 4800rpm and I believe the redline was around 5800-6200
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    1991 Stratos 290SF Not great speed

    I have a 1991 Stratos 290SF, with a Johnson 1992 200GT, it runs good, starts right up every time, sounds good when running, but with just me(140lbs) and 1-tank of fuel(20gallons) once trimmed up I can only get about 42mph out of it. Is that just all these engines produce, or are they some things...
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