HondaCB650

These are really pretty parts.
They appear significantly older than our bikes to me. Possibly a rarity?

Welcome back! :D good to hear things go better for you now and you find time for your CB again. Be aware that a defective VRR can kill the rotor or vice versa. Multiple failure of charging parts is a hint that probably something else but the failed part is wrong. Possibly something tricky that only ...

A CB650 could make 55mph on two cylinders. So something is really wrong here. As you should have the CV carbs, I doubt that it is the missing air filter seal alone but it should provide already a step to the right direction. For the air filter seal I found that one or two rubber rings from preserves...

So far things sound unsuspicious to me. Do you have any issues like backfire, hesitations at the throttle or something like that? Or does it run more or less fine and smooth but just lacks top end power? What is your current topspeed and what is your mpg? Do you live at somewhat higher altitude abov...

First check out if all four header pipes get equally hot. Plug cables from left coil go to cylinders 1+4, from right coil to 2+3. :wink: 50mph at 4000rpm at 5th gear sounds reasonable. The CB650 lives from revs rather than torque. Also full oil pressure is available only from above ~3000rpm on, so a...

Guess "a little bit" got lost, probably this one was meant: :wink: https://www.dimecitycycles.com/vintage-cafe-racer-caferacer-bobber-brat-chopper-custom-motorcycle-electronic-lighting-parts-mini-aluminum-rectangle-chrome-amber-turn-signals-blinkers-25-8301cm.html Well at least you cannot ...

It is not really recommended to run without an air filter. Moreover as K&N are typically reported to be less restrictive than stock air filters be not too surprised if it is the same again or even worse with the paper filter you just ordered. In this case check your choke flaps position and main...

Thanks for the Feedback. :) 1981CB650C should have the VB/CV carbs so it is interesting to hear that K&N make the bike cut off even below 5000rpm. Do I understand correctly that it runs fine without any air filter? Or do you run the stock air filter now? BTW, it would have been more useful to ju...

Sorry, no idea or quick find on resistance values but possibly this Ignition coil test? link already helps a bit.

Welcome here! :D here is a recent thread on that topic: http://www.hondacb650.com/viewtopic.php?f=4&t=14878 BTW it is very helpful to spend some time getting familiar with the search tool of the forum because info on most issues is are already here. ... somewhere ... :roll: I'd say a crack is no...

This sounds like something more severe than a "wrong oil" or clutch iear issue. Did you try to push the bike in 1st gear? Typically the engine should not turn but the rear wheel would stay blocked then. If you are in first gear on the main stand with some thottle as you reported, will it s...

Possibly it does not run permanently on all four. Do your plugs look equal and are your header pipes equally hot? A CB650 on three cylinders seems not to run that poor up to 60mph if you do not know better how it should be. Might be a fuel issue, too. Something like kinked fuel line, tank not clean,...

Welcome here! :D The factory sprockets did have this guard at the outside. Probably it should generate some confidence for cases where the chain jumps off the sprocket but I doubt it would be of any positive effect in such case. The most important issue to avoid such problems is to care for correct ...

I do not have a special brand recommendation but avoid tires that were available in more or less similar type when the bike was new. In particular the rear tire makes a huge difference when it comes to ride around corners. The stock Dunlops turned the CB650 into a dangerous bike where it just rolls ...

Often the rev counter or speedo start to do this before the spindle will quit. Note that the spindles like a bit of lubrication from time to time, too. :wink: Typically clutch slipping happens at high speed in last gear first. If your clutch adjustment is fine, clutch slipping is probably related to...