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CB350 1971 Restoration Project
BenPowell:
--- Quote from: McCabe-Thiele (Ted) on September 12, 2023, 06:45:52 PM ---Clutch action does not sound right, clutches can stick when left unused for several months but not every time.
Might be your clutch cable is sticking.
--- End quote ---
It’s a strange one, I assumed it was because it had been stood for a long while, but I took the side cover off the engine and you can see the clutch disengaging, but the individual plates stick, it’s like how two really flat surfaces put together will grab.
It may improve once it’s had some heat through it and been bedded back in. Can only try I suppose
BenPowell:
--- Quote from: philward on September 12, 2023, 07:46:08 PM ---I'm at the carb tuning stage with my 350 Ben (next week as going away till next week) - tuning seems basic. Have a look at page 60 in the workshop manual (in Ash's dropbox)
My clutch was dragging a bit too but not test rode it yet - have adjusted most of the drag using the screw and nut adjustment.
I think Ash may be the man to ask!
--- End quote ---
Let me know how you get on with yours when you get round to it, I read the book and agree it sounds straight forward. My carbs were in a bit of a state when before I cleaned them up so could be something else, just don’t know what.
philward:
--- Quote from: BenPowell on September 12, 2023, 09:30:44 PM ---
--- Quote from: philward on September 12, 2023, 07:46:08 PM ---I'm at the carb tuning stage with my 350 Ben (next week as going away till next week) - tuning seems basic. Have a look at page 60 in the workshop manual (in Ash's dropbox)
My clutch was dragging a bit too but not test rode it yet - have adjusted most of the drag using the screw and nut adjustment.
I think Ash may be the man to ask!
--- End quote ---
Let me know how you get on with yours when you get round to it, I read the book and agree it sounds straight forward. My carbs were in a bit of a state when before I cleaned them up so could be something else, just don’t know what.
--- End quote ---
Will do Ben
BenPowell:
Bit of a follow up from my last few posts.
Clutch drag - after running the engine for a while and getting some heat into the oil seems to have solved the issue, still feels like it has a fair bit of drag when the oil is cold compared to being hot, but seems to work okay. I think it will probably improve further once it’s had some use.
Carbs - my float height was incorrect causing a really rich mixture, for the 3D carbs the float height needs to be 26mm, I initially set this at 21mm as per some manual but obviously it differs depending which carbs are fitted, I was able to get the bike idling nicely and had it moving under it’s own power for the first time, which felt like a bit of an achievement. I still think the carbs need some more work the left cylinder seems to run fine, but the right seems to pop/backfire down the exhaust when letting off the throttle, I think it is probably running a bit lean based on the spark plug colour. Will need to check for vacuum leaks.
I rechecked points and valve clearances tonight, checked the auto advance functions freely. Will probably get the carbs off Wednesday for another clean I suspect the idle passage is blocked slightly.
Will report back if popping and banging from right side eventually stops,
V5 Application - got a letter in the post today from the DVLA, turned out to be a request for a vehicle inspection, just my look. Anyway they’re coming in Friday to look at the bike, hopefully shouldn’t be much longer till I get the V5.
McCabe-Thiele (Ted):
Always good to read about updates.
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