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FJR Motorcycle Forums
Technical & Mechanical Problems
Engine teardown after 90k miles
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<blockquote data-quote="Geezer" data-source="post: 1352089" data-attributes="member: 436"><p>Yep. Might as well ride a 650 if you don't use the muscle of the FJR.</p><p></p><p>Regarding the need for more frequent valve adjustment, I haven't experienced that but that is a sample of one so it doesn't prove anything. Since the higher the RPMs are the higher the oil pressure is, I would expect that there is no additional wear cause by higher RPM. Using more power can be more stressful on the rings and cylinder walls, but that doesn't seem to be a problem with the FJR. Fuel economy is another issue. Spinning the engine faster is not particularly wasteful of fuel, though it may cost a small penalty in fuel economy. Many small swallows is about the same as fewer large swallows. Using more power uses more fuel because you are then taking larger gulps per revolution.</p></blockquote><p></p>
[QUOTE="Geezer, post: 1352089, member: 436"] Yep. Might as well ride a 650 if you don't use the muscle of the FJR. Regarding the need for more frequent valve adjustment, I haven't experienced that but that is a sample of one so it doesn't prove anything. Since the higher the RPMs are the higher the oil pressure is, I would expect that there is no additional wear cause by higher RPM. Using more power can be more stressful on the rings and cylinder walls, but that doesn't seem to be a problem with the FJR. Fuel economy is another issue. Spinning the engine faster is not particularly wasteful of fuel, though it may cost a small penalty in fuel economy. Many small swallows is about the same as fewer large swallows. Using more power uses more fuel because you are then taking larger gulps per revolution. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Engine teardown after 90k miles
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