SOHC.co.uk Forums > CB350/400

Is it a FRAME UP

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Bryanj:
Actually the crank pins only have two steps, its the cases and rods that have 3
Main journal case max 1.4182 min 1.4173; pin max 1.2992 min 1.2983 so thats a total variation of 0.0009 on the case and pin sizes, count the 0's after the point its not even 1 thousandth.

variation:- big hole small pin is 0.1199
               small hole big pin is 0.1181

so MAXIMUM TOTAL is 0.0018 or 1.8 THOUSANDTHS in which Honda supply 4 different shell sizes

Mind blowing the machining and measuring acuracy of the japanese isnt it

rigwit:
"Actually the crank pins only have two steps, its the cases and rods that have 3"

400 has 3 for journal and 3 for case.   550 only have 2 for journal and 3 for case  .....

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