- Dec 23, 2009
Agree EddieI’d advise caution asking a machine shop to inspect your bores. They may be sympathetic / sensible to the fact its an old bike, ridden like an old bike. But most are not, and will apply unsuitable modern, tight standards. So make sure you read the tolerance info in the workshop manual and ask them to check to that spec, NOT their modern opinion.
I once agreed with my machining guy that the valves and guides were clearly worn on my T160. So we fitted brand new, genuine valves and guides from a trusted source. When he’d finished, we were both surprised to find they were exactly the same as before !
Personally, if everything looks good, and if it’s all OEM stuff, I wouldn’t even change the rings or circlips. Cos unless you KNOW what you’re doing and what you’re buying, you could easily fit worse parts than you have.
All I’m saying is... if it were mine and I’d taken it down that far... I’d remove the barrels to allow inspection and cleaning for peace of mind.
An idiot can use a micrometer and get somewhere near if he doesnt think it's a G clamp, a bore mic is a different deal. Lots of measurements and judgement required.