'82 Honda CB750 Clutch Suggestions....?

Snickare

Snickare

Active Member
I'm looking to upgrade my clutch soon. I am having a hard time finding anything but stock or OEM clutches out there. I've built up my motor, and my whole bike for that matter to get better performance out of it.

Does anyone know of a good aftermarket clutch that will work in a 1982 Honda CB750K?

Thanks for the input. Links would be appreciated.

Todd
 

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Just going with aftermarket clutch springs can add significant grippage to your clutch. You can also make shim washers to add a little more preload to the springs.
 
I hadn't thought of doing that. I'm pretty happy with my clutch now, but in 4th and fifth gear on the freeway, it can slip if I twist the throttle too fast... You think new springs may solve that issue...?

Thanks
 
Snickare said:
You think new springs may solve that issue...?
Click to expand...

Absofuckinlutely.
The old springs are usually a bit fatigued. New springs make a big difference in clutch performance.
 
Awesome. I think I'll try that first. Are the Barnette pretty fool proof? Just a simple replacement?
 
i just had the same issue with my cb900

swapped the springs out for new barnett springs adjusted it as per FSM and it is perfect

here are the springs you need

Clutch Spring Kit
Part# 501-56-06015
Notes:
Set of 6

http://www.barnettclutches.com/342/honda/0/0/1982-honda-cb750-dohc%20cb750sc.html
 
I'm browsing and trying to do a Google search for those springs. Looks like they are available but only by clicking on the part number on a site that has no description as to what it is you're buying... The Barnette page says they are for a cb750sc. What is the sc denoting? Will these work on my cb750 k?

Any links to a good place to buy them?
 
while you are replacing the springs have the metal plates sand blasted. Makes a big difference. Theres another mod you can do by adding another plate in, I'll have to look it up and get back to you, cant remember which one it is, but I think its adding another of the only plate thats different from the rest, but I need to check to make sure.
 
Sand Blast the metal plates? I'll have to look into that. Please do get back to me on the extra one. I'd love to know more about that. I'm thinking that the clutch is in pretty good shape as it is. If I get the new springs in there and the metal plates sanded, I would believe it will jump up and go a lot better. I may be just fine without the extra plate . I have seen something about others adding that extra plate, and it ends up being too thick, but still workable. I seem to remember reading something about someone having a problem after adding extra plates. But I could be wrong. I'd like to know more...

Thanks.

What does sand blasting the metal plates do? I haven't broken into the case yet to see them, but I can imagine if they need sandblasting, it's because they get wear marks, or build up oil residue?
 
Sandblasting imparts a surface texture that is more grippy. I would expect the benefit to be only temporary. Never tried it.
 
Ahhh. That it would. Might be a fun thing to do anyway. Even for a limited benefit.

Thanks for the input. Springs are on their way. I'm Guessing that may just be the key. I've created a lot more power in a bike that weighs a lot less now. The springs don't particularly feel soft, but they have seen 40,000 miles. Seems like a good time to change them.
 
Miles mean nothing to the springs. They will fatigue with the bike sitting in a barn. They are held in compression all the time.

The service manual will tell you what the free length of the springs should be. I'd bet they would fail that test. Compare them with the new springs. The new springs could be as much as 1/4" longer than the old ones.
 
sandblasting the metal plates is a racing thing

it does get a better launch a few times but in street use it just wears the friction discs faster as they polish back up the sand

blasted plates

net effect from observation is higher more rapid wear i dont do it anymore for street use
 
cxman said:
sandblasting the metal plates is a racing thing

it does get a better launch a few times but in street use it just wears the friction discs faster as they polish back up the sand blasted plates

net effect from observation is higher more rapid wear i dont do it anymore for street use
Click to expand...

That makes perfect sense.
 
IF you are not already join the CB110r.net forum, You will find the info I was looking for over there. EBC clutch kits got the thumbs up over Barnet Vesrah etc.

The guy who advocates the sandblasting of the plates is a drag racer so short term gain is more likely his goal than longevity
 
SO I got the Barnett springs and replaced them during an oil change over the weekend. It seems to have solved my issues. SO much so that I can now pull the front wheel off the ground from a stop without trying...

I did not get into the plates. I didn't have the time or energy to do that. The new springs did exactly what I needed. And the tension on the lever tired me out by the end of a long riding day. I'll have to get used to that. Thanks for the tips.

Todd
 
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