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Help. Top End 315 Noise?

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Hi I have been to see an o1 mont, looks like its had an easy life and was really keen till he started it, the top end was quite noisey with a vibey whirr noise, is this normal, or piston wear or something more ominous

The bike otherwise is nice and runs/pulls well.

worst case how much to remedy.

Quick reply apreciated

thankyou.

as a 315R owner I would have to say it's not a normal sound, too hard to tell what is the problemb from here

RDCHAIR,

The 'quite noisey with a vibey whirr noise' could well describe my 02 315 until I put a new piston in it.

An expensive piston at that.

  • Author

It transpired it was the mains rumbling!!

walk away!!

thanks those who replied and pm'd me

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