I came into some cash after selling some items I didn't want on ebay. I had enough money to order a few parts that were missing from the rack of carburetors that I bought on ebay.
Used some 5 minute 2 part epoxy on the slide guides to try and build up the portion that has worn away through the years of use. Some delicate work with my dremel on low speed and finger nail emory board to smooth off some of the unevenness from the fast drying epoxy. Note to self: resurfacing the slide guides definitely requires minumum 30 min epoxy (longer should be better and smoother).
By now, I guess it's obvious that I'm not going to search the globe for a NOS part that someone had in their closet with the original packaging. I'm trying to do this as cheap as possible.
4 jet needles, 1 diaphragm spring, 3 throttle springs, and 4 float gaskets cost me about $100 after shipping. Yikes! big bucks for a handful of junk. This would have hurt alot more if I actually had to pay for these things with my hard earned cash, but the ebay funds makes it a bit easier to swallow the cost for this carburetor upgrade.
I also ordered some o-rings (http://www.oringsusa.com/) and some stainless allen head screws (http://myworld.ebay.com/ebaymotors/stainlesscycle) for roughly $20 more.
One of the caps had a broken vacuum port so rather than buy a new cap, I just bought a small aluminum spacer from the hardware section at Lowes home improvement.
In re-assembling the carb pieces, I discovered the choke mechanism was not engaging the #4 enrichening circuit becuase the arm was flexing and popping off and the plunger was hanging up internally. A little lubrication, a zip tie and some JB weld to give some additional strength to the end of the choke arm and it looks like it will work. No comments from the purists please.
A dab of JB Weld on the throttle springs so they don't come off again because putting the new ones on were an excersize in patience, tedium, and perserverance. I don't think I'll have the mindset to undertake that task and be succesful again.
Used some 5 minute 2 part epoxy on the slide guides to try and build up the portion that has worn away through the years of use. Some delicate work with my dremel on low speed and finger nail emory board to smooth off some of the unevenness from the fast drying epoxy. Note to self: resurfacing the slide guides definitely requires minumum 30 min epoxy (longer should be better and smoother).
I had a fair amount of jet needle wear apparently from needle vibration where the needle exits the ceramic slide. 
I suspect something to dampen the vibration at the hole in the bottom of the slide would work well. Someone posted an idea of using heat shrink tubing to dampen vibration, but I'm not sure I can find something that would work in that place and hold up to exposure to fuel.
I suspect something to dampen the vibration at the hole in the bottom of the slide would work well. Someone posted an idea of using heat shrink tubing to dampen vibration, but I'm not sure I can find something that would work in that place and hold up to exposure to fuel.
Judging by the amount of wear on the slide guides, it's a good bet the carbs were running pretty lean when they were last used because the wear would have caused the needle to sit 1-2mm lower than original, effectively the same as moving up a ring on an adjustable dyno-jet needle.
The 3 missing throttle springs would have also made for a terribly unsynchronized throttle response. If the bike ran at all, I'm sure it was trashed because of the condition of the carbs.
I still need to buy some boots to attach to the engine and some filters. I was originally planning on using some silicone hoses but I could probably save $50 by just looking for some heater hose in the local auto store instead. Found a screaming good deal for K&N RU-2922 airfilter at filterandintakes.com for just a few dollars more than the used ratty ones on ebay and free shipping.
By now, I guess it's obvious that I'm not going to search the globe for a NOS part that someone had in their closet with the original packaging. I'm trying to do this as cheap as possible.
Carbs are assembled and undergoing leak testing in the garage for the next day or two.
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