HondaCB650

Wow- it’s been a while. Hi all, Anyone know if I can run VB carbs on a 79 cb650 engine? Is there any difference in the 1979-1982 cb650 engines?
Any insight is appreciated! Thanks

Good info, thanks man!

Thanks, I appreciate any kind of advice I can get! I ended up swapping the 1&4 coil out with a spare I had laying around and I also cut back the plug wires(the connections looked bad), i'm now getting good spark on 1&4. I don't think the coil was bad, just the plug wires but I replaced it be...

I recently did a ton of work to my 81 cb, including: Top end rebuild ( new piston rings, honed cylinders, new gaskets, lapped valves,etc.) New spark plugs New charging system (reg/rec, rotor, stator, cdi units) new battery carbs rebuilt and cleaned, cleaned, cleaned. cleaned and sealed tank fork sea...

when you set the timing, which index mark did you use? It should be set at the 1-4 F S mark, if it's right then you might want to check the valve clearance. Honestly, I found it impossible to install the cylinder head cover without backing off the tappets on the rocker arms, you might just need a va...

Thanks man. I've decided to replace the wiring harness, i've wanted to for a while now. Also, the battery was under warranty, and "bikemaster" was cool about sending a replacement for free, so I just went ahead and did that. I think it's a combination of a shorted wire and weak battery, we...

Thank you for the reply. I did try my old lead battery but got the same results, which makes me think it's a short. I'm confused why a lithium battery doesn't work with these charging systems, it's still a 12v battery but with advantages. I run lithium ion batteries in all my bikes and have never ha...

Hey Guys, I've got a brand new Lithium battery on my 81 cb650 and when I turn the key to ON the battery voltage drops to 0 from 13.5. The battery has been working great and the bike starts everytime, I also replaced my charging system about 2 months ago, along with the battery. I know some will say ...

Yea, it's a bit high but 1.5k after fully warm is okay for now. I still have a lot of fine tuning to do . Thanks for all the feedback guys!

I feel dumb. The knob was way off. I got it adjusted and idling at 1.5k rpm. My brain is fried, been working on this bike all day, I always miss the simple things. Thank you sir

Hello, I just did a valve adjustment, cleaned/rebuilt my carbs, static timing check.. and now my bike is idling at 4K rpm without the choke. Any ideas why this is? I adjusted the pilot screws by 1/2 turns, in/out but the idle did not change, currently the mixtures screws are back to 2 1/4 turns out....

I have the same noise on my '81, does anyone else have any insight to this noise and a resolution? Thanks!

As I mentioned, it's not recommended to use a piece of copper wire but if you're just trying to get the Bike started for a short time then I don't see an issue. That's all a fuse is, wire. I'm pretty sure the wire would melt through before the bike caught fire.. I'm talking about a small piece

what did you find out?

Thanks for the help and instruction! I'm still waiting on my clutch gasket from the UK... I'll be getting into the clutch inspection once I get that gasket.