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Hello.
I have a little curiosity about the usual values obtained on compression tests on our engines (B18, B20). The normal values on the green manuals refers to new engines, and by now (after 30 or more years of use), the mean value (and associate range) will be different. Please, indulge me with this little survey:
a) Engine? (B18A, B18B, B20A, B20B)
b) Year (made on)? (1957 to 1968?)
c) Compression test mean value: (Cyl1, Cyl 2, Cyl 3, Cyl 4,
or the Mean of all Cylinders)
I hope that with a sample of 12 or more answers it will be give a idea of the actual usual (normal?) values.
Thanks in advance for your kindly answers,
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