gs1100 carb tunning

[motocycle shawn]

ok i could not find the old post so i started a new one. today my dynojet kit came in a long with the carb sync tool. now since this is a new post but still going off the old one i have a 81 gs1100 with a 4-1 filters and a sidewinder header. i was told by cafe kid that i could rejet my stock carbs all day and not get them to work right and the only way to do it is with a stage 3 jet kit so i got one. now that i have it i want to know every ones take on this before i do any thing. is there a ball park to start with i dont want too just put in with the 138 jet if i dont need to but lil lost here.

[hikermikem]

I have an '81 1100E, K&N pods, 4:1 header and my set up is:

DynaJet Stage 3 kit - DJ138 mains, 47.5 pilots, 170 air jets, jet needle 3rd notch from bottom.

Works well for me, my plugs are a bit on the darker side but better there then lean.

[AJ]

My setup is
K&N pods on 34mm Mikuni CV carbs.
Kerker pipe with standard 1.5" baffle.
DJ 138 main jet. (approx same as Mikuni 130, per discussion below)
Needle raised to next-to-last position (#5 position of 6 avaliable. Instructions say to start with #3 midpoint)
Pilot air jet is the DJ #160 (richer than stock, one size smaller than the Mikuni #170)
Mixture screws 2.5 turns out.

I'm about to bump the main jet one size up and possibly drop the needle down one notch.

[motocycle shawn]

carb

well i got them done i set them as so
DynaJet Stage 3 kit - DJ138 mains, 47.5 pilots, 160 air jets, jet needle 3rd notch from top. have not run the bike yet.

[chef1366]

Sidewinder? Are you dragracing?
You can't corner very well with that pipe.

[motocycle shawn]

carbs

yep i race but this is the wifes bike so she dont lean much at all i have 4-5 inch to lean if needed. i only run sidwinders .
rode the gs too day idle is good rev's up great 0-8000 but under a load right od idle it wants to stall but if you get it going it will come out of it and run its ass off!. about 2-3000 rpm is where it runs like crap have not been any faster the 30 on it yet

[AJ]

rode the gs too day idle is good rev's up great 0-8000 but under a load right od idle it wants to stall

FWIW, my 1100e had completely trashed carbs when I bought it. Without load, it would run and rev with two cylinders not even working. Most bikes won't idle decently with even one cylinder not running, but this one will.

rrode the gs too day idle is good rev's up great 0-8000 but under a load right od idle it wants to stall but if you get it going it will come out of it and run its ass off!. about 2-3000 rpm is where it runs like crap have not been any faster the 30 on it yet

It sounds to me like the pilot/low-speed circuit is not working, but once you get past that region, it kicks over to the main jet circuit and that is working well. Double check to see that one or more of your pilot jets is not blocked. Pull the jets and make sure you can see through them.

Also, did you use the rubber plugs that cover the pilot jets on the bottom? These draw their fuel from the main jet tubes and the low speed circuit will not work right without those plugs installed and in good condition.

[motocycle shawn]

Carbs

THE PLUGS ARE OLDER AND HARD sorry caps . going to get new ones and start over.