www.zxrworld.co.uk

this is exactly same problem i have atm - dunno if it is cam chain - as it only seems to do it when there is the weight of a rider on the bike

i put mine up on the paddock stand and took it to 4K revs (where the rattle normally kicks in for me) and nothing ! only does it when i am physically on the bike - got me proper stumped.

found a couple of other people on t'interweb with same issue - on triumphs etc... general view is cam chain

baz had a ride on it the other week for me, heard arattle but didnt think it was too bad / too much of a concern

think its getting worse - its no louder but seems to kcik in earlier down the rev range (3-5K now i would say) and can now hear it slightly when the bike is in neutral, if i just blip the throttle quickly - if i do it at a slow maintiaaned pace, still doesnt kick in

just to update on this,,,i still havnt got to diagnoise wot the cause of the rattle is but its still there 1200 mile later,its not affecting the bike and it hasnt got any worse or anyting,,im after getting another bike(nc30) and when i have that up and running im going to take the zxr off the road and check the clearences then using morimans guide here on the site

@ cargo wot is a good set of feeler guages to be buying for the zxr 400

Good question...................

I've never found metric feeler gauges that are small/thin enough so I've always used imperial
Any good tool shop will have them or maybe try ebay ?

My ones are Draper...but I'd say neary any known make would be fine

cheers cargo,,