Honda's service limit for the 79 crank measured as shown below, is stated in the manual as .050 mm.
I've measured mine at .075 mm (.15 mm total run out, divided by 2).
This is clearly beyond the above Honda service limit, and wonder if this could account for my engine being quite vibey at anything over about 4K RPM, and becoming more so all the way to its 9K RPM limit.
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ICOA # 6309