Show Posts
1
CB750 / sourcing CB 750 K2 1972 clutch plates
« on: September 28, 2020, 06:20:36 PM »
Hi,
Re my 1972 CB750 K2 (USA imported bike)
Can anybody recommend an aftermarket source for a set of friction plates vertical groove type. Most seem to be the type with the angled groove. OEM friction and steel plates are like hens teeth now to get hold of and the price of a gold bar. David silver alternative version friction plates seem to be the angled type. As do CMSNL.
EBC friction plates look vertical grooves from the picture, but are listed as heavy duty plates? does this mean they are thicker. Or is does the word heavy duty relate to the material being harder? Does that not mean more drag when the clutch is disengaged? which I'm trying to avoid. The clutch is apart because the bike has been standing, the clutch does not free enough and I can't get back into neutral when the engine is running. All tolerances are within spec however, so I was just going to put new friction plates back in.
I might change the steel plates, but the aftermarket steel plates do not look from the pictures as though they have the many tiny detents in them ? does this not make a lot of difference ? I assume they are designed to retain some oil.
Has anybody got first hand experience of fitting either the angled friction discs in place of straight cut ones and none original steel plates without the tiny detents. Does it really make a lot of difference. Hondaman seems to think it does, but maybe things have changed over the years and the angled ones are the ones to fit now.
Thanks any thoughts appreciated.
Re my 1972 CB750 K2 (USA imported bike)
Can anybody recommend an aftermarket source for a set of friction plates vertical groove type. Most seem to be the type with the angled groove. OEM friction and steel plates are like hens teeth now to get hold of and the price of a gold bar. David silver alternative version friction plates seem to be the angled type. As do CMSNL.
EBC friction plates look vertical grooves from the picture, but are listed as heavy duty plates? does this mean they are thicker. Or is does the word heavy duty relate to the material being harder? Does that not mean more drag when the clutch is disengaged? which I'm trying to avoid. The clutch is apart because the bike has been standing, the clutch does not free enough and I can't get back into neutral when the engine is running. All tolerances are within spec however, so I was just going to put new friction plates back in.
I might change the steel plates, but the aftermarket steel plates do not look from the pictures as though they have the many tiny detents in them ? does this not make a lot of difference ? I assume they are designed to retain some oil.
Has anybody got first hand experience of fitting either the angled friction discs in place of straight cut ones and none original steel plates without the tiny detents. Does it really make a lot of difference. Hondaman seems to think it does, but maybe things have changed over the years and the angled ones are the ones to fit now.
Thanks any thoughts appreciated.