SOHC.co.uk Forums > CB750
Clutch plate confusion
Trigger:
EBC site lists the 750F1 kit as CK1220 and the 750k6/k7/F2 kit as CK1145. I have worked on many of these bikes for more years than i can remember and i know that the F1 and K6 have the same basket, all plates the same apart from the outside one which has the bigger tabs.
I now regret binning my clutch charts away many years ago and no good phoning any suppliers, as all you get is "that what my computer states" >:(
Look up the OEM PN and it has been superseded more times than i have had hot dinners so, you don't even know if it the right size anymore. CMSNL even state that it also fits the 550, it can't because the ID size is well off.
So after a whole morning putting EBC to rights (and it would of gone in one ear and out the other). Has anyone got a old clutch plate chart ?
The plate i require is ID 120, OD 140, 12 tabs and 16mm wide tabs. This is the one and only plate i require ;)
K2-K6:
I've not got that plate info, so no help there.
But as you do, thought the F1 and K6 were paired for transmission. The F2 and K7 use that doubled steel disc in the centre of the clutch pack, don't know if that's also in F1 and K6?
If not, then presumably they had to make space for it by reducing some of the other plates in thickness.
Only difference I can see between F2 and K7 is that they use different length springs, longer for F2 for more preload I guess aimed at the sort of use it'll get.
Don't know if that's of any help.
Nigel.
Trigger:
Cheers Nigel,
and yes it has the thick double plate located in the middle.
The problem these days is people just buy a clutch kit. I started of life in the business just buying single plates as it was half the price of a boxed kit. EBC don't sell singles anymore but, trade suppliers like Hi lever do. I know off the tip of my head that ID 120 , OD 140, 12 taps (pegs) at 14mm wide and plate thickness of 3.50 = #1033 but, for the life of me i can't remember the 16mm size i require so need a chart to obtain the correct number.
K2-K6:
Ah, I see what you mean.
https://www.cb750supply.com/products/4/engine/38/clutch-plates-springs-cables
You've probably seen this above, but whether it'll help or hinder with any numbers I'm not sure.
Trigger:
The OEM PN would of originally been 22202-371-000 i think ??? This is the problem with any parts lists, they don't give the size .
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