SOHC.co.uk Forums > Project Board
Tels CB550 project
K2-K6:
Good work Tezzer Tel, as it starts to look more bike shaped it feels that all the hard prep work is paying off.
K2-K6:
--- Quote from: McCabe-Thiele (Ted) on October 23, 2024, 08:45:42 AM ---On my 400 & 500 I found that when the engine is in place with the hope that the carbs will not have to come off again fitting the carbs then building back works well. The battery box is a puzzle to fit into the frame, having the rear front half mudguard out just makes life easier with less collateral damage to your knuckles & patience. 😁
--- End quote ---
Good advice Ted
The carbs installation ... emphasise that the cleaning of idle circuits, their passageway and jets is so, so very important to them running correctly and staying on there once you get running.
Many times on here and the wider biking Internet world, not enough importance is given to this element, with resulting running issues that are obviously frustrating. It further seems that putting them in ultrasonic cleaning routine just doesn't guarantee that they are effectively operational.
Absolutely imperative in these carbs, playing such importance in how the engine will run, also massive contribution to that Honda 4 cylinder smoothness that people rebuilding their bikes have in mind on completion of project.
They, the idle circuit, control so much and far more than many appreciate.
Johnny4428:
All looking good so far! Really good to see it taking form. Can I add to the good advice above (and sorry for stating the obvious) a good idea to have the carbs held in position and flooded with petrol just to check integrity of float valves, and carb float bowl seals etc.
TezzerTel:
I was hoping to get it to point where it is on its wheels and I could move it around without the engine before I started on the engine. Maybe I'm just making more work for myself 😳
McCabe-Thiele (Ted):
--- Quote from: Johnny4428 on October 23, 2024, 02:19:14 PM ---All looking good so far! Really good to see it taking form. Can I add to the good advice above (and sorry for stating the obvious) a good idea to have the carbs held in position and flooded with petrol just to check integrity of float valves, and carb float bowl seals etc.
--- End quote ---
That's a good tip, I would add however it might flood on first filling with petrol as the floats can stick when they have been fully down in an empty carb - when the bowls are completely empty the angle between the tip of the float valve and the tang on the float can be just too acute initially.
If it floods virtually straight away, switch of the fuel supply, rock the bike a tad on the stand and let it settle & stop then see if it floods when you open the tap again It can be a one off.
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