SOHC.co.uk Forums > CB350/400

Are my pistons standard or oversize?

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DayvW:
My pistons are all stamped with '1.0 mml 5' (I think it says).  Does his mean they are 1mm oversized?  I need new rings (typically the top one on all has a gap that is on the edge of the service limit) - and I was about to order some when it occurred to me that maybe the pistons are over size as on measuring they appear larger than the manual suggests.  I guess that stamp must mean something?  Any idea anyone?

Trigger:
Pistons always show over size. It will say 0.25 or 0.50 or 0.75 or 1.00. It will depend on the manufacturer where this is stamped. If not sure measure the piston.

mickwinf:
yes 1mm oversize.

DayvW:
Super .. thanks - glad I asked! Any idea where I can get new rings (cant see 1mm oversize on David Silvers)?

Trigger:
For what bike Davy?

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