Crankshaft Runout Explained | M8 & Twin Cam Runout Specs
Posted by TMF Cycles on Aug 25th 2026
Harley Crankshaft Runout: What's Acceptable and When Should You Worry?
Pull the cam chest apart on a Harley and put a dial indicator on the pinion shaft.
The needle moves .001".
Nobody worries.
.002"?
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