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by Tim Miller
Thu Aug 31, 2017 1:12 pm
Forum: Motors - 247cc | 305cc | 337cc | 350cc
Topic: engine build - slowly but surely
Replies: 195
Views: 84388

Dick, Yes, all 3 angles do come in on stock valve size with the New3Acut. You just have to set the cutters right. The problem is usually pitting. That's when having a oversize valve can really help without having to sink the valve. I have some nos 27.5mm ex. Valves that are probably aftermarket? THe...
by Tim Miller
Thu Aug 31, 2017 5:16 am
Forum: Motors - 247cc | 305cc | 337cc | 350cc
Topic: engine build - slowly but surely
Replies: 195
Views: 84388

Going with oversize valve gives room for the 60......

Tim
by Tim Miller
Wed Aug 30, 2017 8:55 pm
Forum: Motors - 247cc | 305cc | 337cc | 350cc
Topic: engine build - slowly but surely
Replies: 195
Views: 84388

I angle the cylinder head using adjustable fixture plate. True, to go through all this effort I normally install fresh guides that's had a tapered reamer bored after installation. What makes this so trick is the pilot is captured by special collet holder above the cutting head. Of course you know th...
by Tim Miller
Wed Aug 30, 2017 3:17 pm
Forum: Motors - 247cc | 305cc | 337cc | 350cc
Topic: engine build - slowly but surely
Replies: 195
Views: 84388

Dick, I do a fair amount of head work on the mill using www.new3acut.com cutting system, which is similar to Neway but with all 3 angles in one shot. By using the bounce spring under the cutting head it illuminates chatter when letting off the seat. Once you get the cutters setup it produces a perfe...
by Tim Miller
Wed Aug 30, 2017 6:27 am
Forum: Everything Else
Topic: CB77 Mirror Extenders
Replies: 13
Views: 4171

Jon,
I emailed you an eye full. Yes, it's worth ever hour in the end.

Best,
Tim
jmn wrote:wow - 2 '61's - I'd love to see them if you care to post any pix. Good luck with the mufflers. It sounds like an impossible task - maybe that's why it takes so long...but worth it I'm sure.
by Tim Miller
Tue Aug 29, 2017 7:02 pm
Forum: Everything Else
Topic: CB77 Mirror Extenders
Replies: 13
Views: 4171

Hi Jon, Oh yes I remember now. I still have all the molds for making those, but most people don't know or care about correct grips on early bikes. But they sure do look better and as a bonus more comfortable than the waffle grip. I restored 2 more S/S sets earlier this year for both my '61 cb72s. Bu...
by Tim Miller
Tue Aug 29, 2017 7:15 am
Forum: Everything Else
Topic: CB77 Mirror Extenders
Replies: 13
Views: 4171

Nice looking early CB and script grips you got there, what year is your bike?

Tim




 

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