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1978 CB550 K3 "running" restoration
SPR:
Success !!
Exhausts all fitted and must say the quality is very good
Old exhausts are available if anyone wants a set - one has been repaired previously and I think two are minus baffles .. some other pin holes in the others - £75 collected
The old exhausts
woody928:
I've just read through this whole thread having just picked up my own 1978 550 last night.
Really good to see you getting stuck in with all of the repairs and restoration, it looks like you're doing an amazing job at bringing the bike back to its former glory. I look forward to seeing what you do next, a lot of these jobs are going to be providing me with headaches soon enough!
SPR:
--- Quote from: woody928 on May 19, 2020, 11:35:53 PM ---I've just read through this whole thread having just picked up my own 1978 550 last night.
Really good to see you getting stuck in with all of the repairs and restoration, it looks like you're doing an amazing job at bringing the bike back to its former glory. I look forward to seeing what you do next, a lot of these jobs are going to be providing me with headaches soon enough!
--- End quote ---
Cheers
If I can do it anyone can - especially with the help available on here !!
It really needs the tank painting
SPR:
So .... another learning curve today ... carb balancing :)
Everything checked and double checked
I haven’t received the auxiliary tank so decided to have a go with what the floats hold - more to be a practice run
The carbs were all different - and quite up and down from #2
I was surprised how little you move the adjustment screw to make a big difference - explains I suppose why they can all look set ok but still be unbalanced.
The mercury gauge kindly donated by Ken worked great - it seemed most stable at around 2k revs.
So .... I learnt that I need the extra time as it is quite fiddly so will be having a second attempt when the tank arrives. I have got them better but not good enough.
It shows that a novice can do these and other jobs with help and guidance :)
The bike does seem to idle much smoother ... will take it for a blast to see if there is a noticeable difference
Cheers
Simon
K2-K6:
As you found, it's not such a fearful task but more working through things logically. Good feeling of achievement in getting something running well and then to go out and enjoy riding it too :)
You picked up on the sensitivity of the balance adjustment too, that's because (counter to most popular views) balancing the slide height is not for improving idle running smoothness, idle balance being a side effect. Ultimately Honda write in their manuals the fine tuning method of adjusting the idle screws AFTER slide synchronisation to bring low speed combustion parity on a cylinder by cylinder basis. It's this routine that is the "icing on the cake" of smooth tickover running.
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