1994 Honda CBR600 F2 De-Smog   Page 5
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The Camshaft
The valve timing between 49 state and California CBR600 motorcycles differ greatly.  
They are as follows:
49 State:
Intake opens: 15 degrees BTDC
Intake closes: 35 degrees ATDC
Exhaust opens:  38 degrees BBDC
Exhaust closes:  7 degrees ATDC
California:
Intake opens: -5 degrees BTDC
Intake closes: 40 degrees ABDC
Exhaust opens:  40 degrees BBDC
Exhaust closes:  -10 degrees ATDC
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