Topic: CB750 chain rubbing

[cb350twin]

Hi, i just got a new X-ring chain for my 750 K5 it seems to be rubbing a bit. I attached photos below. It seems to be rubbing in a are where there's no oil behind, I think? Wondering what I should do ? Look's like the back of the chain isn't showing any wear though..   I think I'm gonna put some paint on the wear mark and go for a short ride and see if it still rubbing or whatnot.

EK 530 SRX X-Ring Chain 102 links

[grumpy]

DO NOT RIDE IT IF IT'S RUBBING!!!!!!!!!

YOU COULD WIND UP WITH A HOLE IN YOUR CASE.

[TwoTired]

I'm trying to understand what rationale continuing to use a chain that grinds on the engine cases makes any sense at all.  As the chain and sprocket wears, it will continue to get worse. 

I guess you must really like that new chain. 

[mystic_1]

Have you checked the clearance on the upper run?  If it's rubbing on the bottom then odds are it's rubbing or close to rubbing at the top too.

mystic_1

[Bill/BentON Racing]

Drive chains and CB750s,you DO NOT take chances!!!!!!!!!,This engine will break a chain and rarely spit it out w/out bunching up and breaking your cases,then you got a real repair to do ,not worth it!!!!Bill

[azuredesign]

Try removing that countershaft sprocket and turning it around so that the side facing out now, is facing in. There doesn't look to be enough offset between the sprocket and the inside of the case. It's a 530 chain, isn't it?

[cb350twin]

530 x- ring chain yes.

Sorry it took so long to get back to you guys. I had one of those EK screw type links which you put on with hand tools and is super strong but no one ever told me need a chain breaker to break it off. 

I did end up going on one short ride with the chain before I read this for the first time. I put paint on the spot it was rubbing and the paint is still there as you can see in the photo.

The main reason why I wasn't super super concerned (But still concerned)  is it seems that it was rubbing in the back on a casting part that was raised up a little and I'm not even sure if there oil behind there that far back in the case? Now if it was wearing form the top of the chain into the front of the case that chain would have been in the garbage no questions asked.

So here are some photos with the chain off. 1st  3 are will the paint on. 4th one is with it all cleaned up showing the wound.

Like you said it is risky business, please don't think I,m trying to be ignorant. I'm just a little confused why it was rubbing and then just suddenly stopped.
If you still think I need to ditch that chain speak up and I'll get on of those Diamond non o-rings chains that hondaman talks about. (But I think I already know what I got to do.  )