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Thread: TR-4 timing chain

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    TR-4 timing chain

    Have 1964 TR-4 and have broken 2 timing chain spring tensioners. What might be causing this?

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    Luke Skywalker Alan_Myers's Avatar
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    Re: TR-4 timing chain

    Hi,

    By any chance are the tensioners that broke the black-finished ones? I have heard there are two different manufacturers: a weaker type that is black anodized or something, and a stronger one that's finished in natural steel (silvery) and holds up pretty well. I lucked out and happen to have one of the latter on hand for my engine rebuild.

    Another possibility, there is often a wear pattern on the front plate of the engine, a slot the tensioner has worn into it. It's best to fill and smooth that, brazing is one way. Unfortunately, there's more than a little disassmebly needed to do that right.

    Alan Myers
    San Jose, Calif.
    '62 TR4 CT17602L
    Alan Myers
    San Jose, CA
    '62 TR4 CT17602L

    "Get in. Sit down. Shut up. Hang on."

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