Jetting Database - Suzuki Z400 Forum : Z400 Forums
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post #1 of 189 (permalink) Old 02-18-2005, 06:28 AM Thread Starter
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THE RULES

1.Only post information that is listed below. If you start babbling in this thread, your post will get deleted. Short comments like "Thanks" or "Good Thread" will be tolerated as long as they are in conjuction with your jetting specs post.
2.If you feel I left something out or something needs to be changed, simply PM me, do not post it in here.

This thread is a trial run only. If it gets enough positive responses, it will end up in the FAQ and will be a very helpful tool for people to get a baseline for jetting. If it does not, it will end up in the trash. I've been thinking of doing this for quite some time, and finally decided to do so.

Each post should contain ONLY the following information:

Carb Type: Mikuni, FCR, Edelbrock (what bore is the carb?)

Main Jet: Please state what type of jets (Mikuni/Dynojet, etc.)

Pilot Jet:

Fuel Screw:

Needle:

*NOTE*Edelbrock guys, modify the above listings accordingly...the first person to post with an Edelbrock gets to set the template for others to follow.

Airbox: List any mods to include filter

Pipe: What brand-Full or slip-on

Engine Displacement: What size is it (434-455) and who's kit (Yosh/Max Power/Athena). Also list compression ratio.

Cams: Intake/Exhaust/None? What kind?

CDI: What brand, what setting if it's adjustable

Altitude: where you normally ride

Are you happy with the setup: Yes or No followed by breif description (this is the only babbling area...and it's only for comments on your setup).
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post #2 of 189 (permalink) Old 02-18-2005, 01:04 PM
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Carb Type: ---> Mikuni (stock)
Main Jet: ---> 155 Mikuni
Pilot Jet: ---> 25
Fuel Screw: ---> 2.5 turns out
Needle: ---> Dynojet 3rd clip
Airbox: ---> EHS Racing lid, NOSS adapter, K&N filter w/outerwears
Pipe: ---> CT Racing full system
Engine Displacement: ---> Stock (DRZe base gasket and springs)
Cams: ---> Hotcams - Stage 1 (intake and exhaust)
CDI: ---> Dyna Non-programmable
Altitude: ---> 250'

Runs strong. Plug color is perfect, looks like toast.

'04 KFX 400

---> Central California <---

<span style="color:blue">CT Racing Exhaust
Hotcams - (2047-1N and 2048-1E)
DRZe Base Gasket and Springs
Dynatek CDI
D.I.D Cam Chain
Works Triple-Rates w/o rezzies
Dynojet Needle - 3rd Clip
Mikuni Main - 155 / 25 PJ / 2.5 Turns Out
Carb Mounted Pull Choke
NOSS Intake w/K&N Filter
EHS Racing Air Box Lid
Tag X5 Bars w/NOSS Dash
PowerMadd Handguards
PEP Steering Stabilizer
13T Front Sprocket
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post #3 of 189 (permalink) Old 02-18-2005, 02:55 PM
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Location: Southern Arizona for awhile...
Posts: 10,396
Carb Type: ---> Edelbrock 34mm x 38mm Oval
Needle Size: ---> 17E
Needle clicks: ---> 13
Accel Pump Screw: ---> 3 turns out
Airbox: ---> Bare Performance aluminum, 250R K&N filter
Pipe: ---> Yoshi RS-3 full, stainless
Engine Displacement: ---> 434cc&#39;s
Cams: ---> Hotcams Stage 2
CDI: ---> Yoshimura 11k CDI
Altitude: ---> 4600ft MSL

Cylinder head has mild intake porting and port and polish exhaust.

Non-Edelbrock&#39;ers: &#39;Brock carb numbers (jetting) are always given from full rich positions, i.e., Needle clicks stated as "13 clicks" would be 13 clicks from full rich (full rich would be stated as "0 clicks"). &#39;Brock carbs = turn right for richer, left for leaner.





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post #4 of 189 (permalink) Old 02-18-2005, 04:40 PM
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Whoa great post!

Carb type- stock mikuni
Main jet-150 mikuni
Needle-stock
Pilot-25
Air screw-3 turns out
Exaust-Hmf slip
Air filter-Twinair/no lid
everything else stock!
Elevation-close to 0
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post #5 of 189 (permalink) Old 02-18-2005, 09:20 PM
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Join Date: Mar 2004
Location: conway, AR
Posts: 74
04- Z
Carb- stock mikuni
Main Jet- 170 mikuni
Pilot- stock
Needle postion- Stock
Air screw- 2 1/2 out
Exhaust- HMF Full
Air Filter- K&N Pro flo W/Ehs Lid
Srp Rev box
Elev. 250ft Ar.
cams-stock
bore/stroke-stock

seems to work well.

up with hope down with dope!!

Conway, Ar

04 z400,Hmf- Full system (Blue), Alba needle 3rd clip, 152.5Mik jet, 2.5 out, 25 pj, Ehs racing lid, TCS(zps) front shocks.Elka rebuild rear shock.
Trail-Tech clamp, 13t sprocket,Trail-Tech High bend bars
pro-flo UNI ,ac propegs, ac front bumper, ac rear grab bar
spr rev box, pep streering dampner.

Z- $4300
Truck- $350
Common sense-$ Priceless
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post #6 of 189 (permalink) Old 02-18-2005, 09:47 PM
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Join Date: Nov 2003
Location: Tulsa, OK
Posts: 2,046
Carb Type: Stock 2003 LTZ400 Mikuni BSR36 SS
Main Jet: Mikuni 155 cc/min
Pilot Jet: 25 cc/min
Fuel Screw: 2.5 turns (depending on conditions)
Needle: Dynojet 0712 needle on 4th clip
Airbox: Modded airbox with Spectre gause import car air filter; 400EX airboot; Vented lid (4" X 5" hole) with nylon weave "home made outerwears"
Pipe: Full Yoshi RS-3
Engine Displacement: 398cc Compression ratio: 12.2:1
Cams: Both HotCams
CDI: Cheap Magic Racing (Procom)
Altitude: 300 to 800 feet

Mild head porting (clean - up)


Very Happy!

rsw = IntkMods/StckCrb-155 MK MJ-25Plt-3rd/ MegaCams/MildPorting/CDI/DRZgskts&sprngs/StealthCharger

taw = IntkMods/StckCrb-155 MK MJ-25Plt-3rd/WebCams/MildPorting/440/JEpstn12:1/CDI/DRZgsket&sprngs/StealthCharger
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post #7 of 189 (permalink) Old 02-18-2005, 09:56 PM
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Carb Type: Stock 2004 LTZ400 Mikuni BSR36 SS
Main Jet: Mikuni 165 cc/min
Pilot Jet: 25 cc/min
Fuel Screw: 2.5 turns (depending on conditions)
Needle: Dynojet 0712 needle on 3th clip
Airbox: no lid
Pipe: Full Yoshi team suzuki system
Engine Displacement: stock
Cams: stock
CDI: stock
Altitude: ohio

just a plain old z
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post #8 of 189 (permalink) Old 02-18-2005, 10:57 PM
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Join Date: Dec 2002
Location: St. Pauls, North Carolina
Posts: 1,893
Carb Type: Keihin, FCR40
Main Jet: 198
Pilot Jet: 45
Fuel Screw: 3 1/4 turns out
Needle: Keihin, 4th clip
Airbox: ESR intake with K&N filter
Pipe: Full Yoshi Pro Comp Stainless
Engine Displacement: 450cc Lukes Racing with JE 13.1:1 high compression piston
Cams: Intake/Exhaust (Hotcams)
CDI: Dyna FS
Altitude: 150&#39;

Are you happy with the setup: YES!

[b]Needle on the 6th clip from the top, 198 main, 42 pilot, Fuel Mixture 3 turns out, 150 ft. Above Sea Level. DynaFS CDI. 14/38 sprockets
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post #9 of 189 (permalink) Old 02-19-2005, 04:31 AM
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Carb type: Keihin FCR 39, Flat slide, set up by Sparks Racing
Main Jet: 170 main
Pilot Jet: 50
Fuel Screw: 2 1/2 turns out
Needle: Keihin, on 3rd clip from the top
Bare Perfomance (aluminum) open airbox w/ K&N and Filtercharger
Exhaust: LRD full ceramic
Engine Displacement: 440 Wiseco w/ 13.5:1 piston, kit w/ new cylinder, Nikasil plating
Cams: Hotcams (both)
CDI: Dyna FS (programable)
Altitude: between 900 and 1000 ft.
Port and Polish as well

Am I happy?? You betcha!


EDIT (5/08)

Carb type: Keihin FCR 41, Flat slide, set up by Sparks Racing
Main Jet: 180 main
Pilot Jet: 50
Fuel Screw: 2 turns out
Needle: Keihin, on 3rd clip from the top
Air intake: Custom air box eliminator setup: velocity type intake tube, large K&N w/ Precharger
Exhaust: LRD full ceramic
Engine Displacement: 440 Wiseco w/ 12.5:1 piston, kit w/ new cylinder, Nikasil plating
Cams: Web cams, 288/540 grind, .368/.384
CDI: Dyna FS (programable)
Altitude: between 900 and 1000 ft.
Port and Polish as well
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post #10 of 189 (permalink) Old 02-19-2005, 04:50 AM
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Join Date: Oct 2004
Location: NE Kansas
Posts: 2,576
Carb Type: ---> Edelbrock 38mm round
Needle Size: ---> 23E
Needle clicks: ---> 12
Accel Pump Screw: ---> 2 turns out
Airbox: ---> custom air box, 250R K&N filter
Pipe: ---> Yoshi TRS
Engine Displacement: ---> 434cc&#39;s
Cams: --->Duncan mid-high
CDI: ---> vortex
Altitude: ---> ~ 900 ft



Lookin for somebody to beat me :re So yes, i&#39;m happy. :evilgrin

LTR450
trail snail KFX400 - GONE!
&#39;89 250R

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post #11 of 189 (permalink) Old 02-19-2005, 09:57 AM
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Join Date: Sep 2003
Location: Mt Pleasant Pa
Posts: 167
yellow 03Z ( I hear yellow is faster )

old intake set-up -
carb - Mikuni BSR36 stk
main - Mikuni 165
pilot - Mikuni 25
needle - Alba 4th clip
fuel screw - Keintech - 2 1/2 turns
air box - stk w/Noss adapter, K&N filter, EHS Racing lid, snorkle removed
a bit rich, but runs strong w/no stumble

new intake set-up-
carb - Sparks FCR39
main - 160
pilot - 50
needle - 3 down
fuel screw - 1 turn out
air box - custom stocker/EHS Racing lid, 400ex air tube/K&N filter
This set-up RIPS!!!

displacement - stk 398 cc
compression - 12.5:1 (Wiseco 13.5:1 w/stk base gasket )
cams - Hotcams stage 1 I/E
valve springs - DRZe
ignition - Dyna fs # 2 curve
exhaust - Pro Circuit T-4 full
plug - NGK CR8EIX
altitude - around 1300&#39; in sw Pa.

Yellow03Z - ( I hear yellow is faster )
AC,Arens,ASV,Baldwin,Denton,DG,DID,DrD,DRZe,Dyna,E BC,Elka,EngineIce,FMF,Galfer,Hiper, HotCams,Houser,IMS,Keihin,K&N,Maxxis,Modquad,Motio nPro,NGK,
OMF,Pingel,PRM,ProArmor,ProCircuit,ProDesign,Ready Racing, RPM,Sidewinder,T.M.Designworks,Trailtech,Wiseco
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post #12 of 189 (permalink) Old 02-19-2005, 10:33 PM
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Join Date: Mar 2004
Posts: 585
Carb Type: Stock

Main Jet: Mikuni 160
Pilot Jet: 2 turns

Fuel Screw: Stock

Needle: 2 clips richer

Airbox:Bare Airbox, 250r K&N w/outerwares

Pipe: Curtis Sparks Full system

Engine Displacement: Stock

Cams: Stock

CDI: Stock

Altitude: 800&#39; above sea level

Happy: was until the airbox, now things seem a little leaner, not a whole lot though. I plan on getting an FCR 40 soon so no need to rejet right now. Awesome Idea CRAZIE!

Kentucky

03 Z400 white
Curtis Sparks pipe
FCR 40 178 Main Jet, 2 clips closer to the taper on needle, One up on the pilot
Bare Performance air box w/K&N and outerwears
Durablue Sway Bar
Mojave front shocks
CRJ Rear Lowering Link
DG fat nerfs
Prodesign Kill switch
Hoosier tires all way around
ITP Pro 9 rims
Front Wheel spacers 1.5"
LSR Adj axle
Removed Head Light Assy.
#55Z


&#39;00 Polaris sportsman
&#39;01 mojave FOR SALE JUST ASK!!

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post #13 of 189 (permalink) Old 02-19-2005, 10:58 PM
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Location: SoCal
Posts: 173
2003 Z400:
Carb Type: ---> Mikuni (stock)
Main Jet: ---> 155 Mikuni
Pilot Jet: ---> 25
Fuel Screw: ---> 2.5 turns out
Needle: ---> Dynojet 3rd clip
Airbox: ---> K&N w/Outerwears, EHS Racing lid
Pipe: ---> Yosh Comp full system
Engine Displacement: ---> Stock
Cams: ---> Stock
CDI: ---> Stock
Altitude: ---> Sea level

Comments: Seems to be rich still, haven&#39;t had time to fine-tune the jetting. Last trip was Glamis, ran great at midrange, had trouble pulling 5th gear in sand. Just got new EHS Racing lid w/Outerwears prefilter, will report back after next trip (also to Glamis, 3/18-20)

OK, after Glamis last month and Cal City last weekend, it&#39;s a still bit rich but runs like a scalded ape. I ain&#39;t messin&#39; wit it no mo&#39;.

Great idea Crazie, this oughta become permanent!!!

Update, 1/2009: Still running this setup, anywhere from sea level to 3000&#39;, about eight to ten times a year. Ain&#39;t messed wit it yet, still runs good almost four years later...

Simi Valley, CA
2003 Z400, white, Yosh C/F full system, Hardstyle filter adapter w/K&N & EHS Racing lid, 155 Mikuni main, 25PJ, 3rd clip, 2-1/2 turns out
2008 Z400 for the boss (black, all stock)
2008 Polaris Outlaw 90 for the twerp (red)
2006 Chenowth Explorer T/A long-travel 4-seater, Shortstar V6
36&#39; SeaBreeze class-A gasser
2000 Carson 20&#39; enclosed
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post #14 of 189 (permalink) Old 02-21-2005, 12:30 PM
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Location: Napier New Zealand
Posts: 526
&#39;05 400

Carb Type: ---> stock
Main Jet: ---> 165 Mikuni
Pilot Jet: ---> stock
Fuel Screw: --->2 turns out
Needle: ---> stock
Airbox: --->TwinAir filter - custom lid - snorkel on
Pipe: ---> White Bros (shorty) slip-on (no discs or endcap)
Engine Displacement: ---> Stock
Cams: ---> Stock
CDI: ---> Procom
Altitude: ---> Sea level - 500m

Runs great !

&#39;03 LTZ

Drze base gasket and valve springs
Hotcams in cam
DRZe ex cam
DID 3/4 cam chain
Rossier &#39;shorty&#39; full pipe
LTR 450 front shocks, bars and front bumper
Kenda Klaw XCR 20" rear
ITP Holeshot 21" fronts
2+3 offset Douglas rims
2x1.5" rear spacers
AC standard nerfs
Pro Design ProFlow foam filter (no lid)
Adj. fuel screw (2 turns out)
#25 pilot jet
Alba needle (4th clip)
#165 MJ
Pro Design kill switch
Pro Taper medium grips
MotionPro &#39;Turbo&#39; twist throttle
Big Gun revbox
Custom block off plate
ProArmor skid plates
Durablue link
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post #15 of 189 (permalink) Old 02-21-2005, 01:48 PM
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Carb Type: ---> Mikuni (stock)
Main Jet: ---> 144 Dynojet (winter), 140 Dynojet (summer)
Pilot Jet: ---> 22.5
Fuel Screw: ---> 3.5 turns out
Needle: ---> Dynojet 3rd clip
Airbox: ---> Stock airbox with stock lid, removed snorkle baffle
Pipe: ---> Stock with modded endcap
Engine Displacement: ---> Stock
Cams: ---> Stock
CDI: ---> Stock
Altitude: ---> Sea level

&#39;03 white Z
kawasaki hood
Goldspeed nerfbars
Reiger front shocks + Goldspeed shock covers
Gusseted frame
Machinist&#39;s MCCT
Homemade exhaust endcap
Snorkle baffle removed, custom airbox lid
Mikuni TM36 pumper carb
jetting: pilot screw 1,5 turns out, needle 3th clip, Mikuni 135 main
LSR axle
PD killswitch
Kenda Klaws XC 20" rear
MSD XC A-arms
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