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Jack Plate Installed w/ Pic, REV tested and need some advice
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<blockquote data-quote="Johny25" data-source="post: 327583" data-attributes="member: 7791"><p>Yes elevation will have an effect on your motor and you will lose HP the higher you go. My guess is you will see an RPM drop but being you are running 6400 plus already you shouldn't have a problem. I would be interested in seeing the different readings you may get when up that high. I have heard some guys running a lower pitch prop at high altitude to compensate and keep engine in the recommended RPM range.</p><p> I am no expert in high altitude operation but the way I understand it the air is less dense and has less oxygen so your motor should run rich. The motor is still pushing same amount of fuel with less oxygen....hence the rich mix. If you always run in high altitude I would suggest running smaller/leaner jets in the carb but be sure and change them back over when coming back to sea level as I believe you can run the risk of burning a cylinder.</p></blockquote><p></p>
[QUOTE="Johny25, post: 327583, member: 7791"] Yes elevation will have an effect on your motor and you will lose HP the higher you go. My guess is you will see an RPM drop but being you are running 6400 plus already you shouldn't have a problem. I would be interested in seeing the different readings you may get when up that high. I have heard some guys running a lower pitch prop at high altitude to compensate and keep engine in the recommended RPM range. I am no expert in high altitude operation but the way I understand it the air is less dense and has less oxygen so your motor should run rich. The motor is still pushing same amount of fuel with less oxygen....hence the rich mix. If you always run in high altitude I would suggest running smaller/leaner jets in the carb but be sure and change them back over when coming back to sea level as I believe you can run the risk of burning a cylinder. [/QUOTE]
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Jack Plate Installed w/ Pic, REV tested and need some advice
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