Timing Chain


How many miles should one get out of the timing chain and the timing chain guides?

I have a 2005 with just unker 25K on the odometer. I removed the rear bolt on the timing chain adjuster and pulled out the spring. Then I removed the adjuster from the cylinder head only to find that it was all the way adjusted out. At 25K.

Is this unusual?
i have nearly 40k on mine, and i still have the ratchet cam tensioner
but hey, gonna have the dealership take care of that hear soon. NO problems. (except that it is NA....turbo soon)

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