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Old 11-01-2019, 04:49 PM   #8
Werner
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Join Date: Jan 2019
Location: Germany, near Aachen
Posts: 1,159
Default Re: Adjustable plungers / valves

30 CCP,

different steels have a different coefficient of expansion. The valve clearance is necessary only to get a tiny gap in the enginehead if it is hot.
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Werner


Ford Model A, Roadster, 1928
Citroen 11 CV, 1947
Hercules W 2000, 1976; (with NSU-Wankel Rotary Engine), Canadian version
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