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my uderstanding is that you can check for "chain stretch"/wear.
You would normally be able to put a strobe onto the timing wheel markings at fast idle and see the advancement/retardation.
If it is several degrees from spec then the chain has more stretch/wear in the links than it should, and needs changing.
If the tensioner is working properly, how can putting a strobe light on show you if the chain is worn ?my uderstanding is that you can check for "chain stretch"/wear.
You would normally be able to put a strobe onto the timing wheel markings at fast idle and see the advancement/retardation.
If it is several degrees from spec then the chain has more stretch/wear in the links than it should, and needs changing.
If the tensioner is working properly, how can putting a strobe light on show you if the chain is worn ?
It cant really as there are other equations. Only by taking off the cover and setting it to the timing marks can any wear be seen.
The tensioner has nothing to do with the effect that any wear would have, as it only takes up the slack and that has nothing to do with the timing.
I could be pedantic and point out that stretch is one of the effects of wear?
Or have I just made a fool of myself?
I could be pedantic and point out that stretch is one of the effects of wear?
Or have I just made a fool of myself?
The chain does not really "stretch" in terms of the metal stretching as such, it becomes longer due to the chain link pins wearing, thus making the chain longer (MMs) and free play with wear in the sprokets and the parts of the chain that sit in the sprockets.There was a post on this some time back - interesting to note that chains don't stretch.... - sure , they wear , but they don't stretch.
In general the sprockets will "hide" more wear than the chain itself .
The chain does not really "stretch" in terms of the metal stretching as such, it becomes longer due to the chain link pins wearing, thus making the chain longer (MMs) and free play with wear in the sprokets and the parts of the chain that sit in the sprockets.
The only true way of telling if a timing chain has worn considerably is to remove it and inspect it. (On some larger engines a dial test indicator is used to check the chain run out with the tensioner disengaged)
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