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1989 20 HP Johnson power upgraded to 25 HP for zero dollars
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<blockquote data-quote="Siguz" data-source="post: 343374" data-attributes="member: 13594"><p>Hi,</p><p>I'm new to this forum.</p><p>I came across it while looking for a a way to boost the power from my 1989 Evinrude 20hp.</p><p></p><p>I want to do this manifold modification but I am afraid that no one will work on my motor afterwards.</p><p>I'm just starting to learn about small engines but have been working with cars for over 10 years. </p><p></p><p>What has to be done after the intake bore?</p><p>-Does the timing have to be set differently or anything like that?</p><p></p><p>I don't want to end up in a spot where regular maintenance is not enough for the motor after it has been changed.</p><p></p><p>Any input is appreciated.</p><p></p><p>Thanks!</p></blockquote><p></p>
[QUOTE="Siguz, post: 343374, member: 13594"] Hi, I'm new to this forum. I came across it while looking for a a way to boost the power from my 1989 Evinrude 20hp. I want to do this manifold modification but I am afraid that no one will work on my motor afterwards. I'm just starting to learn about small engines but have been working with cars for over 10 years. What has to be done after the intake bore? -Does the timing have to be set differently or anything like that? I don't want to end up in a spot where regular maintenance is not enough for the motor after it has been changed. Any input is appreciated. Thanks! [/QUOTE]
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1989 20 HP Johnson power upgraded to 25 HP for zero dollars
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