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NB Crankshaft Position Sensor won’t stay in place.

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Old 10-21-2022, 07:48 PM
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Default NB Crankshaft Position Sensor won’t stay in place.

Last year Streets of Willow was repaved - except for one area that left a massive, jarring ingress/egress to old track. My CPS kept swiveling out of spec and cutting out. Trying to tighten it, I sheared the head off the bolt - so it was definitely tight…. I’m wondering if the smooth brass insert limits surface area for grip.

I’d prefer a mechanical lock - not hoping a bolt in aluminum keeps torsional clamping force.
5x Racing makes an NB CPS positioning bracket, but been out of stock for months. I’ll interpret that as a semi-legitimate, uncommon problem.


Any recommendations? loctite, safety wire, Star washers, JB Weld? Rough up the brass insert? Serrated bolt head?
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Old 10-21-2022, 08:53 PM
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Did the plastic become detached from the brass insert? There really isnt much mass to them, the m6 bolt should be plenty to hold it in place.
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Old 10-21-2022, 11:22 PM
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Replace sensor and bolt, and you should be fine. Dont create a problem where there isn’t one, one failure shouldn’t condemn a design.
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