Search found 5 matches
- Thu Jul 18, 2013 6:39 pm
- Forum: Motors - 247cc | 305cc | 337cc | 350cc
- Topic: Odd top end noise
- Replies: 8
- Views: 4086
it occurs once for each valve closure, you can feel it on each valve also both intakes, both exhausts. Yes, cam pointer jumps forward a hair when it clicks. EDIT: interesting. I just tried adjusting the chain, slacked the nut and backed out the bolt, rotated motor and the shaft doesn't move at all. ...
- Wed Jul 17, 2013 7:50 pm
- Forum: Motors - 247cc | 305cc | 337cc | 350cc
- Topic: Odd top end noise
- Replies: 8
- Views: 4086
- Wed Jul 17, 2013 4:56 pm
- Forum: Motors - 247cc | 305cc | 337cc | 350cc
- Topic: Odd top end noise
- Replies: 8
- Views: 4086
I think I saw that, about the neoprene bits on the advance unit. A bit more investigation with a stethoscope shows it is definitely the valves, each one shuts with an audible "click". You can feel it if you place your finger on the rocker. I presume these valve systems run quiet normally? (I have li...
- Tue Jul 16, 2013 7:26 pm
- Forum: Motors - 247cc | 305cc | 337cc | 350cc
- Topic: Odd top end noise
- Replies: 8
- Views: 4086
Odd top end noise
So I found a donor 67 CB77 to complete my 64 with. The motor seems to be in good shape, but when rolling it slow by hand to check valve gap and timing I noticed something strange. As the advance marks (double slash) passes the pointer there is an audible "click". If I touch the exhaust rocker I can ...
- Tue Jun 18, 2013 5:25 am
- Forum: Wanted - Parts | Bikes | Services
- Topic: Need a few CB77 bits
- Replies: 0
- Views: 1046
Need a few CB77 bits
I could use some bits for a superhawk I picked up recently. Don't have to be shiny(prefer not actually), just functional. This is going to be a daily rider not a show bike. Need a set of rings jugs and pistons, a cam chain, carbs, handlebars, headlight ring, Levers perches and cables. and some other...