Carb OEM specs as per factory manuals

[Coady]

http://motorbikearchives.com/Bike-Tests/Road-and-Street/Suzuki-GS750EN-1979.html

Just found this which had the following excerpt:

The GS750B came with a # 100 main jet, 0-6 needle, 5F21-3 jet needle, and # 15 pilot jet. The GS750C (1978) and GS750N (1979) carburetors were changed to a #102.5 main jet, 0-4 needle, 5DL36-2 jet needle and #15 pilot jet.

What that all means is that the GS750N is leaner at the small throttle openings usually encountered in EPA emissions test modes. The dual-taper 5DL36-2 jet needle is initially leaner, secondarily richer to smooth the transition from idle to off idle, (or from small, steady-state carb openings at low speeds to gentle acceleration, as encountered in traffic). The float level was also lowered between the GS750B and GS750N, from 26mm to 24mm.

I need the carb specs for a 1983 GS850G please. I did a search and turned up with nothing, but let me know if I missed it.

I rebuilding my carb and to continue I need to know how many times to turn one of the jets in.

Any info would be appreciated! Thanks,
jayson-

Carb id number help

Ok gang here is what I got carbs from a 79? gs 750 maybe. carb id stamp is as follows 450 20 anyone know what these are ? any help with the setting of the air screws and the the pilot screws would be awesome. Thanks I will be attempting to put these on a 78 KZ650. I know the cables would need to be swapped out. the stock jets or the ones in the carbs are 105 mains and 15 pilot jets. Does this sound right can't find any info on these carbs.

Hi All,
A while back johnnay (Thanks johnnay!) put together a spreadsheet with all the carb data and I could not find an easy way to post this in a thread, so this will be the first try.
I would very much appreciate it if anyone could help with cross checking this, please, so that we can get it as complete and correct as possible. Then we could approach Frank to host the list on the site for all to easily use. It still has many blanks in it and possibly typos, quite a bit is correct according to the manuals. I would appreciate it if anyone could send me corrections per PM.
Thanks for the inputs already received. If anyone knows a better way to publish this list please advise.

anyone have the specs for the 85 gs550/e
thanks

Search is your friend:

http://www.thegsresources.com/_forum/showpost.php?p=292435&postcount=24

Your model should have these twined carburetors. I'll save you another search, the idle/preset screw is best to start at 3 turns out and adjust from there.

POST 109 of this thread.

Does any1 have the carbs specs, mainly the float and jet specs for an 82 gs 300L model Z if that helps


Thanks

Does any1 have the carbs specs, mainly the float and jet specs for an 82 gs 300L model Z if that helps


Thanks

anyone have the specs for the 85 gs550/e
thanks

still no help out there???

[psyguy]

Would it be dumb to ask if the 83 850 GL specs would be the same? Are they?

it would not be dumb to ask
the specs should be the same

I finally got around to typing up the specs for the 1980 GS850G carburetors.

1980 GS850GT Carburetor Specs
Unit of Measurement = mm(in.)

Carburetor type = Mikuni BS32SS
Bore Size = 32 (1.26)
I.D. No. = 45110
Idle rpm = 1050 +/- 100rpm
Fuel Level = 5.0 +/- 0.5 (0.20 +/- 0.02)
Float Height = 22.4 +/- 1.0 (0.88 +/- 0.04)
Main Jet = #115
Main Air Jet = 1.7
Jet Needle = 5D50
Needle Jet = X-5
Pilot Jet = #40
Bypass = 1.0, 0.8, 0.8
Pilot Outlet = 0.7
Valve Seat = 2.0
Starter Jet = #32.5
Pilot Screw = Preset
Throttle cable play = 0.5-1.0 (0.02-0.04)

Thank you for your indulgence,

BassCliff

Would it be dumb to ask if the 83 850 GL specs would be the same? Are they?

1985 gs550 ????????

anyone have the specs for the 85 gs550/e
thanks

Sure was --but a 24 hr bath in Gunk cleaned them up nice and thanks to R Yonker I am running and synched and purring now! Thanks

Terry
WBL, MN

Anybody have them?--Can get my bike to run for a short time with starter fluid in the carb intake but wont rev or stay running

Thanks

Terry
WBL, MN

pilot jet is clogged, the little jet next to the floats,and main jet

[psyguy]

why exactly are you asking? getting the full answer would fill up pages...
if you're just fixing a bike, these are all the numbers you likely need to be concerned about:

float height 22.4.+/-1.0 (0.88 +/-0.04)
main jet #110
pilot jet #42.5
pilot screw pre-set (1.5 turns back (mixture screw))
pilot air jet #160

if you have standard intake and exhaust, just confirm that all the jet sizes are per specs, set the mixure screws and the float level as above and that's it.
refer to the carb rebuild pictorial for details on the respective jets, etc.

Can anyone please tell me what all this means? is the numbers like 0.7 mean the turns when adjusting? What do all these numbers mean? I'm used to dealing with fuel injection. Sorry

Julia


GS 650 GZ/GLZ (82)

idle r/min 1100-+/-100r/min
carb mik bs32ss (4 seprate carbs)
id no 34300
bore size 32 (1.26)
float height 22.4.+/-1.0 (0.88 +/-0.04)
fuel level 5.0+/-0.5 (0.20 +/-0.04)
main jet #110
main air jet 2.0
jet needle 5C45
needle jet Y-7
pilot jet #42.5
throttle valve #135
by pass 0.8, 0.7, 0.8
pilot outlet 0.7
valve seat 2.0
starter jet #45
pilot screw pre-set (1.5 turns back (mixture screw))
pilot air jet #160
throttle cable play 0.5-1.0 (0.02-0.04)
choke cable play 0.5-1.0 (0.02-0.04)