First time taking apart Carburetors (Lots of pics)

Yes, we should have the bracket for that throttle shaft, just drop us a note..........

 

Found it!

 

oh!
Your throttle cable linkage arm - yea, you are going to need that!

 

Yes I will!

Update: Just waiting on a few parts from Chacal, which should be here today or tomorrow (Great customer service/Shipping).

In the meantime I put the throttle shafts and butterflys back in Carbs 1 and 4 (using blue loctite).

It seems that after doing the above, that the butterfly on carb 1 is "stuck." It takes a little convincing to open, but snaps right back shut and seems to be seated properly. I say seated properly because at the moment, no light is shining through the butterfly in the closed position.

Will this be a problem? I sort of figured that once the rack is all together and bench synced that this will be non-issue, but I just wanted to see what you all thought.

Thanks!

 

it would be better if it didn't stick but if your confident it's closed all the way around, once the idle is set it won't close all the way anyhow.
if you loosen the screws a bit and snap the throttle a few times the butterfly will find it's own happy place

 

What I did, is I waited to Loctite any screws until I had everything assembled and aligned completely. This is especially true for the butterfly screws so that once everythng is racked and you can cycle the throttle shafts a few times, they can kind of seat and move alittle more smoothly. Then, pull one, Loctite it, then do the next one and so on. This also goes for the rack alignment screws.

 

If there truly is NO light shining past the butterfly and the butterfly itself is contacting the aluminum interior of the carb throat, that might be your problem right there. In operation, the brass butterfly should not really touch the carb throat interior even at idle.

If left to completely close unrestricted, it can get wedged a little and do exactly what you described.

 

To amend what I meant, this was before i re-connected the carbs. After putting everything together and bench syncing the bike started!

I could not for the life of me attach the airbox to carb boots, however, so I started it and shut it off. But it started right up and idled for about 20 seconds! Now I just have to measure the valve shims. Bike ran fine before carb tear down but I figured it couldn't hurt to go through everything

 

i use a phillips screwdriver with the point rounded off and a stiff welding rod with a 90 bent about 1/2 inch from the end. this lets you push and poke with the driver and pull with the rod back in places where your fingers can't go.
warm up the boots with a heat gun/hair drier, and it still aint easy

 

Right angle dental pick helps to keep the edges of the air box/carb boots from folding in. Made all the difference for me.cc

 

You're talking about motorcycles, right?

 

why yes it is. But the third line is about shoveling snow in Buffalo, hay that rhymes !

 

Hay! Nice!

 

Carbs are back on properly I think. Anyway to check for carb to airbox boot leaks, and also carb to head boot leaks?

Using (currently doing this) the baby bottle method as pictured.

Synced 3 and 4 easily.
Then 1 and 2 easily.

Currently syncing 2 and 3 and man is this one giving me problems.

Anyone else run in to this?

 

you did put the caps back on the vacuum ports except the ones your using, right? just checking.
why is there no red in the connecting hose? but it looks like that hose is red in the bottles
where is the flow going from/to

 

Well I believe everything is ok. 2 and 3 seemed to be synced ok after some tweaking. I could potentially have boot leaks. I suppose. Didn't seem to be running perfectly but it did idle ok with a bit of choke.

Throttle was hanging a little and it was shooting out a little black smoke during revs. It never used to put out any smoke.

My mufflers are off if that could be an issue

 

Sorry polock that picture was taken with the motor off and while doing 1 and 2.

Yes I also had everything capped. When I was doing 2 and 3 the fluid was swinging drastically but I got it pretty damn even. As I said though, I had some black smoke.

 

Any suggestions on my methods, and why I may be blowing black smoke now, but was not before I took the carbs off?

Thanks guys.

 

"My mufflers are off if that could be an issue"

there is a direct relationship between the intake and the exhaust. they must both be complete for tuning. anything less, and you're just chasing your tail.

CN

 

they are cleaner than I thought even