Vintage and Classic Hondas

Question about rotors and compatibility

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zombiekillinEMT

Question about rotors and compatibility

Hey guys. I've been MIA for a while. Got my bike in storage. Just found an original left side cover with the same color scheme as mine...except it's for an 82 and mine's an 81. Close enough.

Anyway, I still need a rotor that holds a charge. I figure I should look for one now during the winter so I have it when spring comes.

My question is...what different years will fit a 81 cb750f? I've been looking on ebay and I just want to make sure I get one that fits my bike. I know the 78-82s are compatible somewhat. Just want to make sure the rotor is compatible in that time frame and curious as to what all will work with my bike.

Milwaukee, WI
1981 CB750F

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Re: Question about rotors and compatibility

Administrator

The 78 will not work. It is a SOHC bike. I think, you can use 79-85.
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1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)

zombiekillinEMT

Re: Question about rotors and compatibility

You're right about the 78. I realized i miss-typed that after I posted it.

Does it matter for the different models? K vs C vs F?

Milwaukee, WI
1981 CB750F

zombiekillinEMT

Re: Question about rotors and compatibility

Also, what resistance is acceptable? My clymer manual says between 0.4-0.5 ohms, but I'm seeing listings on ebay for 4.4 ohms, etc. I just want to make sure I don't buy a lemon...

Milwaukee, WI
1981 CB750F

TOOLS1

Re: Question about rotors and compatibility

Administrator

In reply to this post by zombiekillinEMT

All the models have the same rotor. The more Ohms they have the better. If they do not have any they are bad.
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