82gs1100 carb q

[TheCafeKid]

Ok, the only thing I did was move the needle up 1 slot and kind of clean them up a bit and now the spitting and sputtering is at 3000 rpm and no other. If i try and stay at 45 in 5th gear which is right at 3000 it jumps then slows cuts out and sounds like crap, but sounds good above and below 3000. Any ideas?? I'm gonna try to get some jets today, I have drill bits that I can use to make them any size I want but would like to have an extra set in case I screw up.

Yeah don't drill emmout. You will have no idea what size they are then. Plus, I'm not even sure how they measure the jet sizes. Some companies use flow rate, some use something else...maybe wire gauge or something... Just figure out what size you need based on a simple formula. For a pipe generally you're going up 1-2 sizes, for pods add another 4-5 sizes. So if you're a107.5 stock, a 122.5 or 125 mikuni is pretty close... Or the DJ equivalent (you either multiply or divide, I can't remember which, the mikuni jet size by .937 and round up or down...DJ come in even sizes, no halves)

[chef1366]

I have 132s and 138s DJ main jets.

[antbanks]

Both would be good that way I have something to play around with. I dropped the needles last night 2 slots, 1 slot above where it was when I started, and it runs smooth through the rpm range now but not as perky and powerful. I haven't checked the spark plugs yet this morning so not sure what its doing. I have a gas analyzer I need to use on it but can't put a load on it while using it.

In drilling the jets I can't flow check them but I can measure them, I have drilled jets and soldered them up without issue...on Q-jet and Holly car carbs, just see how many thousands of an inch they are and go from there, not that big a deal if you have the right tools but like I said I have no way to flow test.

Ok so if I go with a bigger main jet will I have to go bigger any where else?? Like pilot jets or move the needle any??

[chef1366]

You leaned the needle?

[boingk]

Dude. Just listen to what this bunch of experienced people are telling you:

1] You are running LEAN due to pipe & pods.
2] Go get some 130 Mikuni mainjets.
3] Install those mainjets, and put needles to middle (3rd) clip.
4] Ride bike, see how it goes.

Not all that hard, and you'll definitely notice a difference. You can get Mikuni jets off eBay - if you can't find any give me a PM and I'll forward you the fellows store that I get them from. He does them for US$4* a jet plus US$3 postage anywhere in the world up to 12 jets. Pretty reasonable IMO.

Cheers - boingk

*Actually five Australian dollars a jet plus 4 Aussie dollars postage.

[antbanks]

I understand what your saying, I ask so many q's so I have a plan before I disassemble ...I am going to put bigger jets in just haven't made time to get them, House of kawasaki in Oklahoma City has a set of 130's i think.

I did lean them to c if i could get rid of the 3000 rpm stumble and it did...clip is in second slot from top but haven't ridden it more than 5 or so miles after leaning it out. I have the left engine cover off right now welding up a dent and crack. I will change the jets before I ride it again, hopefully today...its bike night at hooters

[antbanks]

I got some 125 mikunis but I had to go to a couple shops cuz no one had a full set, and would have tried them last night if a storm hadn't blown in

[blowerbike]

I got some 125 mikunis but I had to go to a couple shops cuz no one had a full set, and would have tried them last night if a storm hadn't blown in

any chance of taking a picture of your needle(s) and posting it here?
if you have a dyna jet kit... all the BS your going through is unnecessary.
these jet kits are 90% install and ride on stock GS models.
if your not at a high altitude jet kits are simple when installed 100% per instructions.

[antbanks]

Yea I will post some pics. I have to move the needle back up one slot still so will take some pics Monday or Tuesday...the 125's work really well, very nice power but can still feel a slight up and down in power when starting from low rpm at WOT, that started after I moved the needle down. BUT...YES BIG IMPROVEMENT so thanks guys

I just bought 4 main jets, no kit or anything

[blowerbike]

adjustable needles=jet kit already i'd just about bet

[antbanks]

It has had a kit before, it had 118 main jets and the adjustable needles, I didn't buy a kit so I don't have instructions just workin with what was already in the carbs plus the 4 125 jets I bought...I haven't forgot about the pics just gotta make a little time

[antbanks]

I put the needle back where it was and now same problem all over again, stumbles at 3000rpm and kinda at a steady speed at any rpm. Sometimes feels like its loading up on fuel, need to check needle and seat and petcock I guess.I have a pic of the needle but not good quality, hard to see the adjustable slots on top.

[blowerbike]

are you running filters on this bike?
if so...
could you describe them?

[banditom]

split the difference with the needle

Hi,
You stated that you moved the needles two places, it now runs well but not real hi powered. Why dont you try moving the needle back in the direction from which it came to see if you can retain the smooth running and add power. I dont have any idea about anything else to try, but I WOULD NOT drill any jets, if you need a source of jets, you can look up georgefix on ebay to see if he can supply you, if you dont want to go with DJ sets. These carbs are not Hollys or Qjets and this forum has already said there is no way to help if you start drilling jets. I have read on other forums that drilling will leave grooves in the jet that can impair flow giving you an odd and unknowable response to your drilling.

[chef1366]

The main has to be dialed in for the needle ever to be right.
As Terry asked what filters are you running?