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What are the disadvantages / advantages of a mechanical cam chain tensioner?

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What are the disadvantages / advantages of a mechanical cam chain tensioner?

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No disadvantages -- You have to adjust them every now and then, no big deal.

Advantages -- no chance of stock spring unit failing and causing major carnage.

They are called manual cam chain tensioners.

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I dont know how often atamatic tenionsers fail because most people use them. I was looking in the crf pics on the board and most people run automatic tensioners. Has anyone had theres fail?

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Has anyone had theres fail?

Oh yeah. When they fail, you can say goodbye to your nice Unicam engine as it is turned into scrap metal.

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Oh yeah. When they fail, you can say goodbye to your nice Unicam engine as it is turned into scrap metal.

Did yours fail? Anyone have one fail (slip a tooth or more?)

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