Author Topic: cb750 cam gear slotting  (Read 1304 times)

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Offline KRONUS0100

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cb750 cam gear slotting
« on: April 24, 2012, 01:21:34 pm »
how much do i need to slot in either direction for say 5 degrees advanced?
MATT
current bikes:  1976 CB750F, 1981 GS1100E
bikes owned:1981 GL1100I, 1990 GS500E, 1981 GS850, 1977 and 1979 GS750, 1974 CB750, 1975 CB750, and a 1982 GS750E

Offline KRONUS0100

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Re: cb750 cam gear slotting
« Reply #1 on: April 24, 2012, 02:25:09 pm »
nevermind........my son gave me idead to trace cam gear over a protractor and find the bolt holes.
MATT
current bikes:  1976 CB750F, 1981 GS1100E
bikes owned:1981 GL1100I, 1990 GS500E, 1981 GS850, 1977 and 1979 GS750, 1974 CB750, 1975 CB750, and a 1982 GS750E

Offline Sam Green Racing

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Re: cb750 cam gear slotting
« Reply #2 on: April 24, 2012, 04:22:24 pm »
As a rule of thunb, 5 degrees on all old Hondas is the dfference between the F and T marks for the ignition timing on the crank, on the cam it would be double.

Sam. ;)
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike