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FJR Motorcycle Forums
Technical & Mechanical Problems
Ticking sound
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<blockquote data-quote="wfooshee" data-source="post: 835056" data-attributes="member: 6354"><p>There <em>is</em> valve noise in the FJR's engine, and it's perfectly normal. Unlike a car's hydraulic lifters, our engines have a (hopefully) carefully adjusted gap between the camshaft and the top of the valve stem. There is some tapping noise when the lobe starts on the valve, and when the valve closes. Which one's noisier I couldn't tell ya, but it's there, and it's normal.</p><p></p><p>Your cam chain tensioner replacement is not going to change the engine's performance one iota. The tensioner has absolutely nothing to do with the performance of the engine, other than the fact that engines with failed tensioners perform very poorly. Saying that the performance didn't change with the new tensioner means absolutely nothing, and is not the least bit surprising.</p><p></p><p>As for whining noises, there are a number of straight-cut gears inside the motor case. All the transmission's gears are straight-cut, not helical. Also, the balancers, one on either side of the crankshaft, are driven by straight-cut gears, so it whines.</p><p></p><p>There are no abnormal noises in your video. Not from your bike, anyway.</p></blockquote><p></p>
[QUOTE="wfooshee, post: 835056, member: 6354"] There [I]is[/I] valve noise in the FJR's engine, and it's perfectly normal. Unlike a car's hydraulic lifters, our engines have a (hopefully) carefully adjusted gap between the camshaft and the top of the valve stem. There is some tapping noise when the lobe starts on the valve, and when the valve closes. Which one's noisier I couldn't tell ya, but it's there, and it's normal. Your cam chain tensioner replacement is not going to change the engine's performance one iota. The tensioner has absolutely nothing to do with the performance of the engine, other than the fact that engines with failed tensioners perform very poorly. Saying that the performance didn't change with the new tensioner means absolutely nothing, and is not the least bit surprising. As for whining noises, there are a number of straight-cut gears inside the motor case. All the transmission's gears are straight-cut, not helical. Also, the balancers, one on either side of the crankshaft, are driven by straight-cut gears, so it whines. There are no abnormal noises in your video. Not from your bike, anyway. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Ticking sound
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