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FJR Motorcycle Forums
Technical & Mechanical Problems
First gen timing chain questions.
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<blockquote data-quote="ionbeam" data-source="post: 1285251" data-attributes="member: 277"><p>Cam Chain Tensioner. As the cam chain wears it gets longer, often misnamed cam chain stretch. The cam chain synchronizes the mechanical rotation of the crank shaft with the positions of the intake valve's cam and the exhaust valve's cam. If the chain were allowed to have slack the synchronization would be sloppy leading to reduced engine performance. Once the slack gets bad enough the cam chain can skip a tooth or more on the crank sprocket and then bad things happen, like the valves will be moving down into the cylinder while the piston is going up. $$$CUNCH$$$. You really do want the CCT to keep the slack out of the cam chain.</p><p></p><p></p><p>I know one poor SOB that didn't make 40k miles before his cam chain skipped teeth on the crank sprocket while (attempting to) starting the engine.</p></blockquote><p></p>
[QUOTE="ionbeam, post: 1285251, member: 277"] Cam Chain Tensioner. As the cam chain wears it gets longer, often misnamed cam chain stretch. The cam chain synchronizes the mechanical rotation of the crank shaft with the positions of the intake valve's cam and the exhaust valve's cam. If the chain were allowed to have slack the synchronization would be sloppy leading to reduced engine performance. Once the slack gets bad enough the cam chain can skip a tooth or more on the crank sprocket and then bad things happen, like the valves will be moving down into the cylinder while the piston is going up. $$$CUNCH$$$. You really do want the CCT to keep the slack out of the cam chain. I know one poor SOB that didn't make 40k miles before his cam chain skipped teeth on the crank sprocket while (attempting to) starting the engine. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
First gen timing chain questions.
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