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Author Topic: cb750 k3 duplex primary sprockets worn  (Read 1225 times)

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ianS

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cb750 k3 duplex primary sprockets worn
« on: May 28, 2009, 01:03:33 PM »
Hello Cb750 owners
i am over here in the uk and really need some help with my rebuild. I have spent a small fortune on this engine only to find that the duplex primary drive sprocket teeth on the cush drive (clutch end) are worn to a point and therefore no good? I can get primary chains easily over here but i cant get a primary sprocket / cush drive anywherer, even used. I have been looking for months and really am at my wits end. Can anybody help with advice on where i can get one or what to do???
Thanks in advance
Ian ???
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Offline bwaller

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Re: cb750 k3 duplex primary sprockets worn
« Reply #1 on: May 28, 2009, 01:53:10 PM »
Maybe post a pic here. Those sprocket teeth are usually pointed, all may not be lost afterall!
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Offline kghost

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Re: cb750 k3 duplex primary sprockets worn
« Reply #2 on: May 28, 2009, 01:53:43 PM »
Well CMS doesn't have them.....

Did you check Honda?



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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: cb750 k3 duplex primary sprockets worn
« Reply #3 on: May 28, 2009, 10:23:23 PM »
A NOS piece just sold on EBay for US $250+
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

ianS

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Re: cb750 k3 duplex primary sprockets worn
« Reply #4 on: May 29, 2009, 05:51:01 AM »
thanks for the quick responses. I will post a picture this afternoon of the sprockets, you reckon they are pointed anyway? no flat top on the teeth crown. Why is that?? Anyway i will post a picture and see wha you think.
thanks
Ian
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ianS

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Re: cb750 k3 duplex primary sprockets worn
« Reply #5 on: May 29, 2009, 10:15:59 AM »
ok
please have a look at the attachment (pictures of the offending teeth) and tell me what you think.
thanks
Ian
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