ZX2R, ZXR400, ZXR750, ZX6R, ZX7R, ZX9R & ZX12R & others.
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ZXR750 camchain rattle / rocker cover removal

Sat May 24, 2014 10:00 pm

So this kitted bike is sounding a bit too rattly for rare kit part comfort, so decided to have a quick look at the camchain. Except unless I've missed something, we can't get the rocker cover off without dropping the motor - took the top mounts out and top rear, tilted forward but still not enough clearance....

On the rattling, are the kitted motors likely to be noisy in the camchain regard anyway?? May be a case of tension /adjustment??

Re: ZXR750 camchain rattle / rocker cover removal

Sat May 24, 2014 10:27 pm

Does it have flat slide carbs?

Re: ZXR750 camchain rattle / rocker cover removal

Sat May 24, 2014 10:28 pm

They are rattly at idle and low revs.

Re: ZXR750 camchain rattle / rocker cover removal

Sun May 25, 2014 11:22 am

Yes does have flat slides and was the first thought but we'd pretty much ruled them out as the cause.

Re: ZXR750 camchain rattle / rocker cover removal

Sun May 25, 2014 12:16 pm

Madkaw had an M with flat slides.
He dropped it off at a reputable dyno operator for a tune.
Came back to get it and the guy had been too scared to run it as he thought it was about to blow.
Haha

Re: ZXR750 camchain rattle / rocker cover removal

Mon May 26, 2014 5:57 pm

Doesn't have gear driven cams by any chance does it????

Re: ZXR750 camchain rattle / rocker cover removal

Mon May 26, 2014 10:43 pm

Sadly not!

Re: ZXR750 camchain rattle / rocker cover removal

Tue May 27, 2014 1:15 pm

Bummer, that would be a nice rattle you could learn to live with.

Re: ZXR750 camchain rattle / rocker cover removal

Wed May 28, 2014 1:50 pm

I have an ex-TKA motor and don't find it particularly rattly, so definitely check out the tension of the cam chain to eliminate a possibility.

Braced frames are a bugger as they have plates welded on the inside of the frame spars around the headstock. I can't get the rocker cover off mine either without dropping the engine. However, with bruised knuckles and a bit of cursing I can angle the cover enough to be able to touch the cam chain with the tips of my fingers and vaguely check deflection of the timing chain.
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