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1976 CB500K2...
ST1100:
Had a wrestle with those new carb rubbers of course...
Having a heat-gun, priceless... 8)
Those refurbed carbs do look a bit out of place on that old beaten up motorcycle
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Weird setup with that infusion bottle thing dangling from the ceiling ;D
Need to get me a proper IV-pole ASAP...
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One of those vintage SUN-monitors aside would really make a statement in that assemble ;)
ST1100:
Of course is there no such thing as easy...
#1 tended to overflow... fixed...
#4 didn't want to fill at all... fixed that to...
Fortunately only the two outboard carbs were acting out... yes, it is possible fixing that with the bank on the bike ;)
Attached and adjusted the throttle cables... working as one can expect with the old switch-pod and grip on...
So, we've oil topped up and instant oil pressure within two starter revolutions, which is a good sign of some sort...
We've reworked carbs and fuel in them...
OK, choke working nicely, set to about 1/2, throttle closed...
To be honest, I didn't really expect what happened next...
Careful me I never operate a starter motor longer then like 3~5 seconds...
...vieeee-vieeee-vieeee...
...vieeee-vieeee-vieeee...
...vieeVRRROOOOOOOOOOOOOOOOMMMMMMMM....
WTF just happened??!!!!
40 years of sooth, rust, abuse and neglect belching out that tulip-endpipes, stinking up the place within seconds with the engine screaming to life at steady 3000RPM... :o
Stunned I hit the kill-switch and ran to kick them doors open...
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...couch-couch... ;D
Can this really be???
Confused I'm switching back to RUN and blip the starter button:
...vieeVROOOOOOOOMMMM...
Yes, it runs!
No knocking, no clatter, no abnormal noises... I'm flabbergasted...
I reach near the downpipes, and indeed all 4 emit heat into the palm of my hand...
I walk around the bike, no oil or other liquids pouring out...
Moving the choke to off I get brave, trying to gently work the throttle... vrooom-vrooom-vrooom... carefully avoiding going higher then ~4000rpm yet... blizzards of rust bits flying out the end-pipes, but hey it likes that, it want's to go! Smooth... ;D
Any spectators around would need to wear respirators and ear-muffs though... ;)
What a persistant little motorsickle... grounded and neglected for I don't know how long, flawlessly firing up at the 3rd push already?!... un_F_believeable!!! I think I'm finally smitten... 8)
I'm familiar with such reliability from the V-4 plants in the ST1100, but those engines are from the 90ies and a V... not a line-4 from the 70ies...
Since I couldn't get the idle lower then ~2500rpm in a quick way (will deal with that in a second work-run on them carbs), I stopped the engine after aprox 5 minutes to let the now warmed oil drain (an what a black sludge that was... ::) ).
Them PO also hadn't used a crush-washer on the drain bolt, so it was torqued hard but came off without damages...
While that "tar" drained I broke out the shop-vac (big ass Hoover for you ;) ) to clean up the mess that starting incident left all over the place...
Once the house was clean, I closed the doors to keep the winter cold out and focused on the CB again...
Bad news: that oil filter bolt just won't bulge, it was already rounded and slightly damaged so I refrained from applying any further excessive forces, will deal with that later, probably need to cut it off or have a go with the impact-wrench, unless you guys have any good tips there...
Anyway, new 10W40 went in, to ready it for the next test run...
I'll remove and rework them carbs again (ridiculous if they couldn't be brought back into full working condition, damn...), check/adjust the valve clearances once more and once I can establish a proper 900~1100rpm idle, I'll check mixture and sync...
And once the engine has belched, coughed and spit out most of them cobwebs and deposits, I'll have another look at the compression to decide where to go from there.
And, note to myself: the next test run happens outdoors... ;D
Green1:
You should have known it would run its a Honda after all.
Plenty of heat on the stubborn filter bolt should free it.Don't forget to put the spring back in when you do free it.I forgot to put it in mine twice.
ST1100:
--- Quote from: Green1 on January 03, 2016, 01:04:13 AM ---You should have known it would run its a Honda after all.
--- End quote ---
Yep, got that right... should have known better ;)
Thanx for the tip, planning to have a go with the blowtorch later on, during the next oil change (want to flush the case as good as possible).
Dunno yet if I've should break the engine open or not...
If it runs smoothly and shows proper compression?
Maybe I do just the top-end, overhaul the head, new timing chain, tensioners...
What's the general view there? It has done 40.000km... how durable are those engines?
SC26 plants will easily last 400~500.000km, with proper maintenance provided though...
Green1:
My green k1 had 70k on the clock and showed excellent compression that had also stood for years.
I should change the timing chain really I suppose
Its still running perfect at 80k and it gets pushed at times
I have a rule if it runs it runs if it did it in the 70's it will do it today.
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