Help, Gas coming out of Airbox?

[unicorncomputer]

Internal gaskets from GeorgeFixes should be here today - can't wait to get this fixed so I can get riding some more before it gets too cold. I am up in the North East - starting to get colder here already.

Steve

[gryphon51]

Looks like this, it is mounted to the top of the #2 carb.

http://www.ebay.com/itm/80-xs1100-xs...#ht_830wt_1137

AHA!!! I was wondering what that bracket was supposed to be holding when I removed it from the carb....

I have been following this thread, I have the same problem, too much fuel coming into the cylinder.... stops firing, fuel runs out of pod.... I cry more....

[gryphon51]

I think my carbs are not the correct ones for the bike...



the bike came with a second set, but nothing is the same, the brass cylinders on the diaphrams are smaller than in these, and the diaphram caps are less "pretty".....

I have to admit, after years of fuel injection, I am close to just selling this thing...

[natemoen]

Those carbs came from '81 XS11. You can tell by the float bowl.

[crazy steve]

Those carbs came from '81 XS11. You can tell by the float bowl.

Maybe.... He's got 'frankencarbs', as the bodies are definitely '80-81 type, but note they also have '78-79 cast tops on them...

[natemoen]

Maybe.... He's got 'frankencarbs', as the bodies are definitely '80-81 type, but note they also have '78-79 cast tops on them...

That is true, BUT the bowls will not interchange between the early carbs and the later carbs unless you F up the brass tube. The tops easily interchange. Plus they have the 2 rails on the bank rather than just the single rail on the early carbs. Also the idle adjuster is not where it would be for the early carbs.

Maybe they are '80, but I would bet on '81. They certainly are not '78 or '79!

[unicorncomputer]

Petcock rebuild kits showed up today. Tomorrow after work will tell. Maybe by tomorrow evening I will be on the road. crossing my fingers and toes.

lol

Steve

[gryphon51]

That is true, BUT the bowls will not interchange between the early carbs and the later carbs unless you F up the brass tube. The tops easily interchange. Plus they have the 2 rails on the bank rather than just the single rail on the early carbs. Also the idle adjuster is not where it would be for the early carbs.

Maybe they are '80, but I would bet on '81. They certainly are not '78 or '79!

The Cast tops are off the other set, they polished up much nicer and seemed interchangeable, I found the bowls were not interchangeable after I did this work... grr..... close but no Cigar....

There is no reason why these carbs will not work on my bike though correct? I mean other than the gas running out onto the ground part....

[natemoen]

Carbs will work fine as long as you jet to the year of the carbs and not to the year of the bike.

[brcree]

eeeek...leeeeks!

I've read this string and would like to put my 2 cents in if I may.......I've had the same prob with my carbs...81 SH. The Octy is gone so I have blocked off one of the petcock nips and ran a fuel line with in-line filter to carb Ts. I crisscrossed the furl lines from the petcocks. My biggest prob was with trash getting between the float needle and seat. I used a jeweler's glass to see what the trash might be........dang....bug parts! No kidding! I used a auxiliary fuel tank to do my carb. sync. and I didn't check to see if the tank was clean. Dang bugs had gotten in it before i put gas in. This was before i put in-line filters in. So....you see these float needles are extremely sensitive to any grit or small particle making it not close off well. Make 100% sure the needles are 100% clean.....hope you clear this up man...lots of good folks in here to help!....oil is not cheep anymore....and a trashed engine is out of the question!

[motoman]

That is true, BUT the bowls will not interchange between the early carbs and the later carbs unless you F up the brass tube. The tops easily interchange. Plus they have the 2 rails on the bank rather than just the single rail on the early carbs. Also the idle adjuster is not where it would be for the early carbs.

Maybe they are '80, but I would bet on '81. They certainly are not '78 or '79!

Natemoen IS correct, those are 81 carbs. BTW Steve, 80 and 81 are NOT the same. Bowls will NOT interchange between the two models. Unfortunate, as it would make it easy to 'hose' the fuel levels if they would. 81 and XJ carbs ARE the same cept for the main jetting and metering rods.

[crazy steve]

...Steve, 80 and 81 are NOT the same. Bowls will NOT interchange between the two models. Unfortunate, as it would make it easy to 'hose' the fuel levels if they would. 81 and XJ carbs ARE the same cept for the main jetting and metering rods.

Uh, 'scuse me? I have swapped bowls between the 80 and 81 carbs and didn't have any issues. What makes them non-interchangable?

And the XS and XJ carbs have a different choke setup, they're not the same. The XJ is cable operated, no lever on the carbs. You can't swap the XS choke linkage onto the XJ carbs unless you drill the #1 and 4 carb bodies for the linkage detents, otherwise you have to physically hold the choke lever 'on'...

[unicorncomputer]

Put in the new gasket and o-rings in the petcocks and no more leaking. I got everything back together and had a short, but nice ride this evening.

Thank you everyone for all your help, advice, information.

Here is a pick of my bike.



Thank you,

Steve

[natemoen]

I cannot speak to a difference between '80 and '81 bowls. Only between '78 and '81.

Glad you got your issues figured out!

[motoman]

Uh, 'scuse me? I have swapped bowls between the 80 and 81 carbs and didn't have any issues. What makes them non-interchangable?

And the XS and XJ carbs have a different choke setup, they're not the same. The XJ is cable operated, no lever on the carbs. You can't swap the XS choke linkage onto the XJ carbs unless you drill the #1 and 4 carb bodies for the linkage detents, otherwise you have to physically hold the choke lever 'on'...

Well, guess you had a cooperating set of carbs. Normally the body casting is such that a bit of a giggle after in place in the recess can't be had having bowls in a slight bind when tightened down. As for the differences, I was speaking of the internal differences as far as stock main jetting and metering rod differences. The later model carbs as far as stock jetting AND metering rods ARE different for the Special than for the Standard and are even different yet for the XJ.....and the Clymers page for main jetting stock on the 80-81Specials is dead wrong. 80-81 Specials from factory were 110's across. Correct for same years Standard, but each model also had different configuration of metering rods, which is also correct in the clymers. Don't remember right off, but the XJ had even different configuration metering rods/part numbers AND 112 main jets across for stock. Just something that may help others if dealing with stock jetting having stock intake and stock exhaust, and as you know, PO's and shop personnel occassionally get their fingers in where they shouldn't be leaving the next owner scratching their head trying to figure out where things are wrong at, like throwing in K&L or RD jetting and such......you know the drill....