SOHC.co.uk Forums > CB500/550

Partially Restored 74 CB550

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DomP:
That must feel nice to get it running again, I'm going to feel a bit nervous starting my 550 for the first time.  Are you going to be able to get out on it soon to run it in once you've sorted the timing etc?  That's my concern as I've still got quite a bit to do to get mine roadworthy....I see why Ken suggests doing the engine rebuild last

Oddjob:
Uneven as in the engine isn’t quite running right, that could be just because it’s not setup properly, maybe timing slightly out but it’s more likely to be carbs, they need balancing and getting the mixture spot on. Sometimes that can take a while as everything starts to settle down.

If the engine will start from cold with no choke it’s clearly running too rich. Try another 1/4 turn out on the air screws, see if that makes a difference.

For a first start though Dave it’s pretty good.

davidcumbria:

--- Quote from: DomP on January 03, 2024, 11:19:43 PM ---That must feel nice to get it running again, I'm going to feel a bit nervous starting my 550 for the first time.  Are you going to be able to get out on it soon to run it in once you've sorted the timing etc?  That's my concern as I've still got quite a bit to do to get mine roadworthy....I see why Ken suggests doing the engine rebuild last

--- End quote ---

Thanks Dom - yes it’s not too far off roadworthy. After so much time on the engine and carbs I got to the point where I was very keen to hear it run. Won’t be going out in the wet or while there’s any salt around mind you. Probably around March.

deltarider:
Looks promising, David. I'm curious what ignition you run. Standard or EI?
Do you happen to know your carb settings, like: # slow jet, # main jet, needle position and position of the airscrews? I take it the carbs have the number 022A stamped in.

davidcumbria:

--- Quote from: deltarider on January 04, 2024, 08:25:14 AM ---Looks promising, David. I'm curious what ignition you run. Standard or EI?
Do you happen to know your carb settings, like: # slow jet, # main jet, needle position and position of the airscrews? I take it the carbs have the number 022A stamped in.

--- End quote ---

It’s standard points ignitionwith new Few brand ( Japanese)points. 22A carbs with standard jetting 100 main, needle in the middle , 38 pilot ( maybe standard is 40 ). I adjusted the screws fro 1.25 to 1.5 turns out today and the idle/ pick up seemed slightly better. Dynamic timing showed it to be about 2 degrees retarded ( 7? degrees) so I’ve slightly adjusted that. The dwells were close but not exactly the same so I can work on the points set up  a bit.

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