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1976 CB550F1 (what have I let myself in for) Project
eight0:
Quick update, made some good progress this weekend.
I managed to get power to all the right places, Oil pressure light came on, but wouldn't go out. Found that the pressure switch had a loose wire and was grounding out so I re-made the terminal and then after 1 kick the light now goes out.
I replaced the coils, plugs and caps, cleaned the points, set the gap and the timing, checked valve clearance and fitted the carbs.
2 kicks and it fired up! Revved really high so I killed it. Tried again and cut the choke straight away, still revving quite high but kept it running for 10 seconds or so and there are no worrying noises coming from the engine. In fact it sounded great. Think there maybe be an air leak in the boots or the bench sync was way out but I'm happy that there are no major bottom end engine issues that are immediately obvious.
I will check the compression next weekend now I've burnt off the oil on top of the pistons.
I don't have much in the way of pictures, but the view inside the sump looks clean.
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And the mess of wiring
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mickwinf:
its a great feeling when they fire up!
Rob62:
Good progress.... spring’s coming 8)
eight0:
A bit of progress over the last 2 weeks.
Got the engine running and idling smoothly. I tried to take a video but my phone battery died before it saved! I had done the bench sync incorrectly but after re-reading the process I got it in the end. Put some vacuum gauges on them and they were pretty close.
Removed electrics - all going in the bin.
Removed the shocks and triple tree - the fork tubes are in bad condition. I'll either need to re-chrome them or source replacements.
Removed the rear wheel - one of the wheel spacers was missing and had been replaced with..... 3 Nuts!
and finally got the engine out. I layed the frame on its side and got it out that way. Was hard work by myself but I got there in the end.
The engine cosmetically is pretty bad. I'd like to re-paint it but I've read in many forums its not good to paint an assembled engine (shouldn't paint over gaskets and bolts and you can never get it fully clean).
I emailed a couple of blasting companies but they all said they wouldn't touch an assembled engine.
Leaves me with a couple of options.. Do a top end rebuild and get the head, barrels and cover blasted in the process - then do my best to clean and repaint the case assembled
Or completely strip the engine and get it done properly.
I think I'm going to do a top end anyway, I don't know the bikes mileage and I want to check the tensioner, rings and valves/guides.
Thoughts?
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On a separate note, I'm not putting this bike back to stock so will be selling/passing on a few things. Any interest in the below? If there is I'll take some photos.
Exhaust headers (550F 4-1) - they would need re-chroming and are rusted onto the collecter. I could cut it off and check the condition of it if there is any interest. I think they're just a bit rusty and don't have any dents.
Controls left and right
Seat and pan
Grab rail
Headlight ears
Chain guard
indicators
Trigger:
Interested in the down pipes. Could you put some pictures up ?
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