Originally Posted by Garvin
I think it was wonky donky, or someone similarly knowledgeable about FWB springers, who said that in all his years of experience, he'd never come across a piston ring that was actually worn enough to need changing.
Sounds about right.
I seem to remember a contemporary advert for the FWB 300 that referred to the metal piston rings similarity to automobile engine technology & after a huge number of cycles there was no measurable wear discovered on disassembly. I can't see why a 65 would be much different.
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