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Old 03-10-2019, 03:18 PM   #14
Werner
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Join Date: Jan 2019
Location: Germany, near Aachen
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Default Re: installed a new 6:1 head now a tapping noise

Hello Roxo,


Quote:
It will stop for a few seconds then starts back up again. But just for 2 or 3 seconds.
This is typical for so-called "piston tilting". This happens when the piston has a little too much wear in the cylinder diameter. Too much running tolerance between piston and cylinder. It tilts transversely 90 degrees to the piston pin axis.
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Ford Model A, Roadster, 1928
Citroen 11 CV, 1947
Hercules W 2000, 1976; (with NSU-Wankel Rotary Engine), Canadian version
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