HondaCB650

It’s hard to say if the other cylinders are kicking in after 2k from your video just a loud ticking sound can be heard.
Yes timing & compression test is probably a wise move. Remove the carbs first..
Yes the timing is set for all 4 cylinders.

Do you have spark on 1&3? Do you have the right HT leads going to the correct plugs?
On mine 1&4 are connected to the left hand coil 2&3 on the right coil. If you turn it over do the plugs 1&3 become wet?
Where a outs are you?

Does the engine run on 4 cyl when you rev it up?. If it only running on 2 cyl it should be very lumpy/ hard to rev? Do the pipes 1&3 only stay cold on idle?

Rich

If your confident the spark is ok then it will be carb issues. Does it stay cool only on idle? Do they warm up when at higher revs?
Is it standard air filter or pods etc ... I am no expert but I have learned a few things that were going on in my 650.
Rich

Can’t see any of your images?

Hi George,
Your 650 project sounds awesome.. I wish I had the wire spoked wheels, I think they look so much better ...
I try to upload some photo's soon..

Rich

Thanks George your a star, so it does look like the ring have been put on the piston in the wrong order. As for the rest of the bike it’s still n progress. Welding, painting all done but the engine and carbs have been the thorn in my side. Still have quite a lot of wiring to do and am still n the lo...

Hi, So I did compression test on my cb650: Results were: 1: 140 psi 2: 90 3: 75 4 90 The story was this engine was rebuilt by a Yamaha tech.... so I have taken off the head and it’s now on the bench with the chambers filled with diesel to see if the valves are leaking. To be fair they don’t seem too...

A couple of new photo's The frame has been repainted using a different paint than before. Quite pleased with how it looks now. https://image.ibb.co/dhmGrR/IMG_1080.jpg The engine will have a clean up and some paint where needed. https://image.ibb.co/mecNWR/IMG_1079.jpg Rich

Thanks, does it go under or over the tank rubber mounts and through the left metal loop welded on the triple tree stem thing? Thank again Photos would be awesome also whats under the left hand frame cover? I have this triangular metal cage thing which a tool kit fits into but I can't find any pictur...

Hi, I am after a little guidance, I have a cb650a/z (I think) which I am building but I don’t know what route the the main wiring loom takes from the battery compartment, under the fuel tank and out into the headlight bowl. Can anyone help clear this up?
Thanks
Rich

I am with you wanting to restore sensitively. But as you probably know cb650 are getting thin on the ground and people want big bucks. When I was a teenager the 400 four was the bike I wanted but couldn’t afford. I think this is in the same mould.

I quite like the brat style but the cafe seat. I didn't like the long brat seats. Also didn't want passengers .. I think this bike looks awesome http://www.bikeexif.com/honda-cb650 So was kinda leaning in this direction.

Rich

Hi George, You are correct I am in Swindon Wiltshire. I bought the bike from a guy in Reading.
Where are you?
Rich

Hi All, I have been lurking here for a few weeks so thought I would say "Hi" and let you see My CB650. So what I bought at the begining of September 2017 was a 4 boxes of parts and a frame with an engine on a crate. Here is what it was supposed to look like when it was last assembled. From...