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1969 CL450 US Barn Find Restoration
MrDavo:
Hell I’d forgotten all about them, when I was on the Honda Superbike team the RC45 race bike had them as standard in the fuel Ines. We called them ‘dry breaks’
I liberated a couple when I left for the Norton S Type I was building at the time, but that’s just what I want for that pesky balance pipe, i’ll get one ordered.
I’m not sure if I have a throttle cable problem or an air leak with no reliable tickover and revs that suddenly go mental for no reason. I tried tightening the band around the inlet stubs, not much else I can try. The twins forum is full of people trying to make these carbs behave.
MrDavo:
More progress today, I connected all the wires up, I had a surprise when I tried the indicators, the generic indicator relay I bought from eBay has a loud beep built in, not very 1969 at all!
Three flashed, and the repeater, the other wasn’t earthing through the headlamp ears because of the new paint. I soon fixed that, then I connected everything else up. Because of the clear colour coding and unmolested original connectors, much to my surprise I soon had fully functional lights, plus instrument lights as well as indicators and horn.
All I’ve left to do electrically is investigate the neutral light which doesn’t, and try to fit the headlamp without disconnecting anything in the bundle behind.
Tickover is still high and unreliable, but I now have both cylinders going at once, one of the new plugs was only firing intermittently so I swapped it for one of the originals!
JamesH:
Good work Dave. Sounds like you’re getting pretty close now...
MrDavo:
The registration paperwork has gone to the DVLA, so I jump on the post each day, but nothing has come so far.
A long weekend working through my ‘snagging’ list in the garage as she wasn’t running at all well, I can happily report that I finally have a reliable tickover and she has moved under her own power for the first time in many years.
I set and adjusted the clutch, then took the carbs off to change the cables for a new set from Silvers, pattern but from a Japan, in grey to match the other cables and good quality. I had to drain the fuel, but hopefully for the last time as I have now fitted the dry breaks to the tank balance pipe as suggested by James.
I refitted the original pilot air screws but with new rubbers, and checked the carb airways, all in search of the elusive tickover.
Everything got put back together, so I was then gutted to find her still running dreadfully, starting reluctantly on one pot, then with both firing refusing to idle, with popping and banging that made me suspicious about the timing. I had hoped to do it with a strobe, but neither of mine would fit so I checked where the points opened with a multimeter. Either I’d got it wrong or it had slipped, but the points were definitely opening late.
I readjusted, put things back together and tried again- what a difference! Easy starting and an idle at last. The tacho has steamed up, not sure if there’s an o ring in the cable that’s perished, I had a similar issue with the 750 breathing up the cable.
Before I came in I wanted to see if the clutch worked, I pulled the lever in and pushed the lever down, my newly fixed neutral light went out and I didn’t fire forwards as I’d worried I might. I let the lever out and rode all of a couple of feet, but under her own steam at last. :)
Nurse Julie:
Wayhay......and he's off. Well done Dave 👍
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