cb 550 hoses

[dean550]

Hi can anyone tell me, where the breather tube from the breather cover goes to? and where the two outlets on the bottom of the air filter box and the outlet on the air manifold?

thanks

dean

[Bryanj]

which model 550?

[SteveD CB500K0]

Looks like an F2 from the photo in the avatar Bryan.

[dean550]

hi, im not 100% sure, would the frame number CB 550F 1018405, engine number CB550E 1129395 be of any help.

[Bryanj]

Sorry my eyes aint good enough to decifer the avatar pics!! but with the "F" in the frame number i would think Steve is right, Only a letter from Honda would be 100% and that costs

[dean550]

thank you very much i will try and put some pictures up at the weekend, what areas of the bike inparticular.

thanks dean

[Bryanj]

Tank (side and top) exhaust if its original, carb tops.

Those should ID it

[dean550]

hi Bryan hope these pics are what you are looking for to help ID my 550.

[deltarider]

Bastard. Carbs are the later PD type that were on K3.
 

[SteveD CB500K0]

F2 with K3 carbs.
Honda headers. Dunstall silencer?
Front mudguard looks sorts Suzuki-ish...

[dean550]

why bstard, are the later k3 PD type better?

thanks for the info, but back to the original question of, where do the pipes run please?

[Bryanj]

I concur that the carbs are wrong for the bike, which means that the air box and rubbers are not original so its very difficult to be sure of where anything goes!

The pipe from the top of the engine ought to go to a connector under the air filter box to re-circ the oil vapour.

The pipe on the plenum chamber (where the rubbers fit) does not go anywhere BUT it isnt an ordinary pipe either, from memory it lets fuel overflow out but isnt supposed to let dirty air in

[SteveD CB500K0]

The K3 carbs ran much leaner (55mpg vs 40mpg for the other 500/550s I owned). Downside was that it would overheat very quickly in the summer if run at a standstill (like in the queue at Silverstone for example...  )

[dean550]

thanks SteveD and Bryanj the pipe info makes perfect sense now. So the answer is not to sit still for to long in the next swelter of a summer that we are bound to get. Ha Ha

[matthewmosse]

I can verify the overheating thing on the 550k3 carbs, have them on my 500/4 sidecar outfit for the economy but the trade off is the cold starts / stale fuel means the maintenence is higher. I think the 500 got better than 40mpg with standard carbs but re jetted (presumably) for a k&N filter and aftermarket pipes.