Go to this web site and and there is a easy fix that Uncle Jeff has come up with.Here it is
CBRWorld.net - OEM CCT MODIFICATION PIC'S he seem to know what he is talking about he has wrote alot on the bb noise check it out and let me know what you think I am going to try it.

 

None taken Steve .......... it only lasts 3 or four minutes at most ............but this
winter when the snow and ice comes .........she's a gitting a new one and chain.
Think I'm going the modified route though........hatchin' plans for a manual one,
my neighbour the pro welder said he'd love to get into it with me too.......could
be interesting cuz this fella knows his chit good and used to race as well.

 

I think the F4i takes a different CCT................???

 

i replaced mine this spring it was the original one, the short one, since then only a slight rattle at startup the time that the oil pressure builds up about 1 or 2 minutes after that it is a charm!

 

6666woody

Keep meaning to do mine, very rattly on start-up (but not bad when warm). Is there a thread somewhere with photos showing how to do it?

Thanks

 

Look up Ferlev's posts on this.
I can help with the "commentary"