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General Jet Boat Discussions
Johnson 90/65 Opinions?
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<blockquote data-quote="JoshKeller" data-source="post: 446294" data-attributes="member: 9811"><p>I run a 1760 xpress with a 115/80 omc. I started with a 90/65 and it turned 5200 rpm. Swapped powerheads, same impeller bumped up to 5450-5500 rpm and gained 2 mph. The proper liner and 80 hp impeller brought the rpm down to 5300. </p><p></p><p>speed with the 90/65 was 29 mph. </p><p>speed with the 115/80 and 65 impeller was 31 mph. </p><p>speed with the 115/80 and proper liner/impeller is 32 mph.</p></blockquote><p></p>
[QUOTE="JoshKeller, post: 446294, member: 9811"] I run a 1760 xpress with a 115/80 omc. I started with a 90/65 and it turned 5200 rpm. Swapped powerheads, same impeller bumped up to 5450-5500 rpm and gained 2 mph. The proper liner and 80 hp impeller brought the rpm down to 5300. speed with the 90/65 was 29 mph. speed with the 115/80 and 65 impeller was 31 mph. speed with the 115/80 and proper liner/impeller is 32 mph. [/QUOTE]
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Johnson 90/65 Opinions?
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