DrumReaper
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- 1971 429CJ Mach 1, 2012 Boss 302
S
So, PA46 may get worn if the tensioner is not engaged, but the shaving from it should not affect the engine... Correct?I wanted to take a closer look at the secondary chain tensioner itself so I ordered one through my Ford Parts guru - thanks again Bryan. I filmed a quick video with my phone to hopefully capture a better view of the tensioner.
In a nutshell, if you can see the groove like this you should be all good (assuming the tensioner on the other cylinder head was released as well).
If your tensioner is still compressed such that you see no groove as in the above photo you may want to stop driving your car and contact your dealer immediately.
Note that the guides themselves are subject to wear and can be replaced. So if you notice a chewed up guide you may want to have that serviced in short order.
As I mentioned in the video, the guides are made from PA46.
PA46 "enables lower frictional torque in comparison with any other material (e.g. PA66) at relatively low engine speeds ranging from idle to 1800 rpm. PA46 allows for reliable solutions due to its high abrasion resistance (7 times better than PA66)." For more on PA46 see the attached pdf.
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