Carb OEM specs as per factory manuals

[psyguy]

I propose that we start a carb spec page maybe a link off the carb clean up page. we can follow this layout

first timer, a lil suggestion here for this great thread
it may be worth noting in the first post that the carb specs are often different for us bikes vs bikes for other markets
this may help avoid any confusion for readers outside the us
thanks for your consideration

[Headphase]

Suzuki Service Manual: Dec 1979
GS750
1980 TSCC
Model: L

Idle Speed: 1050 +/- 100 rpm
Carb: Mikuni BS32SS
Id no: 45410
Bore size: 32mm (1.26")
Float height: 22.4mm +/- 1.0 (0.88" +/- 0.04)
Fuel level: 5.0mm +/- 0.5mm (0.20" +/- 0.02)
Main Jet: 112.5
Main air jet: 1.7mm
Jet needle: 5C32-3rd
Needle Jet: Y-5
Pilot Jet: #42.5
By pass: 0.8mm
Pilot outlet: 0.7mm
Valve seat: 2.0
Starter jet: #50
Pilot Screw: 3 and 1/2 turns back
Pilot air jet: #150
Throttle cable play: 0.5-1.0mm (0.03-0.04in)

[johnnay]

Okay, finally got tired of replying to PM's about the spreadsheet. Not that there were that many, I just finally got around to posting the file on the 'net...

hope this helps, although I haven't updated it since I first posted about it.

find it here: http://members.shaw.ca/johnwightman/images/SuzCarb.xls

let me know if the link doesn't work.

[mriddle]

1982, 1983 and 1985 SUZUKI GS300L

Your carbs if stock are Mikuni BS30SS Twin

Idle 1250 +- 100

Fuel Level 4.0 +- .5 mm

Float Height 21.4 +- 1.0 mm

Main Jet 115

Main Air Jet 1.0 mm

Jet Needle 5C53

Needle Jet 0-7

Pilot Jet 17.5

By Pass 0.9, 0.8, 0.7 mm

Pilot Outlet 0.8 mm

Valve Seat 2.0 mm

Starter Jet 25

Pilot Screw ?? (preset)

Pilot Air Jet 147.5

Throttle Cable play 1.0 - 2.0 mm

[GS750]

1977 gs750b

GS750B
1977

idle r/min........... 950-1150
carb................... Mikuni VM26SS (4 separate carbs)
id no................... 45010
bore size ............ 26 (1.0)
float height ......... 26mm (1.02")
fuel level ............ 3.0mm (0.12")
Mixture screw ..... 2 Full turns out
pilot air jet........... ???
pilot jet............... #22.5
cut away............. 2.5
jet needle........... 5F21-3 -3rd notch from the top
needle jet .......... P-1
pilot outlet........... ???
by pass ............. ???
main jet............. #105

[Kalon]

OEM Carb specs

I have carb specs for the following models. I am listing them as they appear for the European deisgnated 80's Suzukis. If anyone needs any other info for these bikes just "quick reply" and I'll do my best to help out.

GSX1100X '81
GSX1100LT
GSX1000/1100SZ Katana '82
GSX1100EZ '82
GSX1000/1100SD Katana '83
GSX1100ED/ESD '83
GSX1100SE '84

I'd like to know if anyone can tell me what GS/GSX or other Japanese in-line 4 used the MIKUNI VM32SS other than the 82/83 Kats.

Many thanks, and hat's off to everyone who makes this the best GS site on the web !!

[TheCafeKid]

I have carb specs for the following models. I am listing them as they appear for the European deisgnated 80's Suzukis. If anyone needs any other info for these bikes just "quick reply" and I'll do my best to help out.

GSX1100X '81
GSX1100LT
GSX1000/1100SZ Katana '82
GSX1100EZ '82
GSX1000/1100SD Katana '83
GSX1100ED/ESD '83
GSX1100SE '84

I'd like to know if anyone can tell me what GS/GSX or other Japanese in-line 4 used the MIKUNI VM32SS other than the 82/83 Kats.

Many thanks, and hat's off to everyone who makes this the best GS site on the web !!

The BS32SS were used on 550s untill 83, all 650s, 80 and on 750s, and 80 and on 850s.

Wasnt aware there WERE a VM32SS, however, as that is the designation used for Mikuni's mechanical actuated slide carbs. By 1980, in order to comply with US regulations, and other such truck, ALL STATESIDE Zooks were strapped with "BS" constant velocity type carburetors. I am pretty positive, at least in the states, that even the 82 and 83 Kats were as well.

[Kalon]

The BS32SS were used on 550s untill 83, all 650s, 80 and on 750s, and 80 and on 850s.

Wasnt aware there WERE a VM32SS, however, as that is the designation used for Mikuni's mechanical actuated slide carbs. By 1980, in order to comply with US regulations, and other such truck, ALL STATESIDE Zooks were strapped with "BS" constant velocity type carburetors. I am pretty positive, at least in the states, that even the 82 and 83 Kats were as well.

Thanks for the fast reply and useful info. I know the GS1000 sported the VM26SS and VM28SS but wasn't sure what bikes would have carried the 32 as standard. I have a 1000sz kat from the UK and was trying to cross reference bikes that might have been given the same setup. I guess it was just the European/Brit Kats that were given these carbs.

Cheers

[first timer]

I have carb specs for the following models. I am listing them as they appear for the European deisgnated 80's Suzukis. If anyone needs any other info for these bikes just "quick reply" and I'll do my best to help out.

GSX1100X '81
GSX1100LT
GSX1000/1100SZ Katana '82
GSX1100EZ '82
GSX1000/1100SD Katana '83
GSX1100ED/ESD '83
GSX1100SE '84

I'd like to know if anyone can tell me what GS/GSX or other Japanese in-line 4 used the MIKUNI VM32SS other than the 82/83 Kats.

Many thanks, and hat's off to everyone who makes this the best GS site on the web !!

if you have these VM32ss carbs post up the specs just make sure to state they are UK specs. Same goes for any other carb specs posted. I know there were some funny aussie kat carbs used too.

[Kalon]

Carb specs for 1982 GSX1000SZ Katana (UK spec)

Carb type.................Mikuni VM32SS
Bore size..................32mm
ID#..........................49310
Idle rpm....................1050 +/- 100rpm
Fuel level...................5.0 +/- 0.5mm
Float height...............22.4 +/-1.0mm
Main Jet....................#95
Main air jet.................1.5
Jet Needle...................5DL82-3rd
Needle jet...................0-6
Pilot jet......................#20
By Pass......................0.8
Pilot outlet..................0.8
Valve seat...................2.3
Starter jet...................#45
Pilot screw...................Pre-set (1 1/4)
Cut-away....................1.5
Throttle cable play........0.5-1.0
Choke cable play...........0.5-1.0


According to my manual, the 1100 could also be dressed with the VM32SS as well as the CV Mikuni carb BS34SS. The VM32SS had the same specs as above and changed only in the following areas:

ID#..................49320
Main Jet............#102.5

It also shows a spec for a pilot air jet #160 where-as the 49310 does not. I think it might be an error though. I've only seen the PAJ on the BS34SS cv carb


For 1983 the same VM32SS carb was fitted on the 1000SD. The only change I can see is the ID# 49520

[Spyder]

83' 750T Model

i think we now have all the models covered.


-ryan[/QUOTE]

I did't see anything specific on the 83' 750T I have one and am in need of carb help. I there are any "carb pro's" in the northeast IL- northwest IN area willing to help me I can pay some.

[jmlcolorado]

GS1000G BS34SS VM34 specs
Here are the specs for stock jetting.
Specs in mm.
Carb Type- Mikuni BS34SS
Bore Size-34 mm
ID# - 49160
Idle r/min - 1050 +/- 100 r/min
Fuel Level - 5.0 +/- 0.5
Float Height - 22.4 +/- 1.0
Main Jet - #115
Main Air Jet - 1.7
Jet Needle - 5D57-3rd
Needle Jet - X-8
Pilot Jet - #40
Bypass - 0.9, 0.8, 0.8
Pilot Outlet - 0.7
Valve Seat - 2.0
Starter Jet - #45
Pilot Screw -Pre-Set (I started with 1-3/4 going to 2 or 3 out)
Pilot air jet - #160
Throttle Cable Play - 0.5-1.0
Choke Cable Play - 0.5-1.0

What year is this for? Im looking for specs on my 80 gs1k shafty. Are they the same as the 81 gs1k?

Thanks
Also, im looking to rejet from stock to pods and straight pipes. Are the main and pilot jets the only ones tht need to be changed?

[tlepac]

looking for the specs for the carb on the GS 750 L 1979

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

[Colorado85gs550]

1985 GS550E Carbs!!!

We never did get specs on these twin 2 barrel carbs!!! I'm looking for measurements on these carbs so that I can get some custom Pods built to fit the airhorn side too....can anyone help?

Paul

[2-Bit]

You all rule for putting together such a comprehensive guide to factory specs for the GS series. Quick question, can someone direct me towards a key on how to apply all the spec numbers that are posted. Some I get, some I don't. Rookie, I know it. Thanks for humoring me...