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PC/SR · 07-24-2020, 10:38 AM

Agree with Nosetime and katy, could be hitting the head. Use Prussian Blue to check popup, gasket and side interferance. Similiar thing happened to a friends car. He ran it and broke the crankshaft. Might also try just laying the head in place without bolting down and see if it moves on rotation.

07-24-2020, 10:38 AM	#9
PC/SR Senior Member Join Date: May 2010 Location: Santa Rosa, CA Posts: 1,279	Re: Help diagnosing engine knock Agree with Nosetime and katy, could be hitting the head. Use Prussian Blue to check popup, gasket and side interferance. Similiar thing happened to a friends car. He ran it and broke the crankshaft. Might also try just laying the head in place without bolting down and see if it moves on rotation.