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).

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.

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'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'ers: '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"). 'Brock carbs = turn right for richer, left for leaner.

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

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.

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!

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

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'

Are you happy with the setup: YES!

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

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's
Cams: --->Duncan mid-high
CDI: ---> vortex
Altitude: ---> ~ 900 ft



Lookin for somebody to beat me :re So yes, i'm happy. :evilgrin

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' in sw Pa.

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' 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!

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'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's a still bit rich but runs like a scalded ape. I ain't messin' wit it no mo'.

Great idea Crazie, this oughta become permanent!!!

Update, 1/2009: Still running this setup, anywhere from sea level to 3000', about eight to ten times a year. Ain't messed wit it yet, still runs good almost four years later...

'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 !

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

Carb Type: Mikuni - stock carb
Main Jet: Mikuni 155
Pilot Jet: 25
Fuel Screw: 2.25 turns out
Needle: alba middle notch
Airbox: Stock box, no lid w/k&n pro flow
Pipe: stock
Engine Displacement: 400cc 12.2:1
Cams: stock
CDI: stock
Altitude: 1000'
Are you happy with the setup: Yep, with a 13 tooth sprocket it is loads of fun on the trails :)

Carb Type: ---> Mikuni BSR (stock)
Main Jet: ---> 155 Mikuni
Pilot Jet: ---> 22.5
Fuel Screw: ---> 2.5 turns out
Needle: ---> Stock needle shimmed w/ two 3mm washers
Airbox: ---> No lid, no snorkle, K&N w/ outerwear.
Pipe: ---> Yoshimura RS-3 Stainless
Engine Displacement: ---> Stock
Cams: ---> Stock
CDI: ---> Procom (sucks)
Altitude: ---> 1090'

'04 KFX 400

Carb Type: Stock Mikuni BSR36

Main Jet: 150 Alba

Pilot Jet: 25 Alba

Fuel Screw: 2.75, but adjusted based on altitude (see below)

Needle: 4th Clip Alba

Airbox: Billet Adapter, K&N+Outerwear, No Lid, Sometimes Snorkel

Pipe: FMF Power Core 4 + Power Bomb Header

Engine Displacement: Stock 398cc

Cams: Stock

CDI: Stock

Altitude: Trails=1,500' Dunes=4,300'

Happy. Some recent mods so somewhat still tbd. Sounds great and pulls through the low end very quickly. Want to get a 13T front sprocket. Will have final results 3/4-3/6 at Sand Mountain, Fallon, NV....woohoo

Carb Type: ---> Edelbrock 38mmx34mm
Needle Size: ---> 17E
Needle clicks: ---> 27
Accel Pump Screw: ---> 2.25 turns out
Airbox: ---> Stock air box, lid removed, alba adapter with KN
Pipe: ---> HMF full system
Engine Displacement: ---> 400cc's
Cams: --->Hot Cams stage 2
CDI: ---> not yet but soon
Compression ratio:--->12.5
Altitude: ---> ~ 1900 ft


Very happy with the current mods. Love the way the quad pulls through out the power band. Bad thing, I have to shift a lot cause of the stock rev limiter, but thats what the yosh cdi wil take care of.

Carb Type: ---> Keihin CVK40mm
Needle Size: ---> Std Fixed Height Needle
Needle clicks: ---> 5 washers spacing it
Main Jet----> 175
Pilot Jet-----> 40
Accel Pump Screw: ---> 2.25 turns out
Airbox: ---> Stock air box, lid removed, snorkel removed, K & N Filetr with adapter
Pipe: ---> Full Duncan Racing Fat Boy 4
Engine Displacement: ---> 400cc's
Cams: --->Hot Cams stage 2
CDI: ---> Procom
Compression ratio:--->DRZ base gasket fitted
Altitude: ---> ~ 300 ft

Carb taken from a Kawasaki KLX650 (been a nightmare to get working right!!!) but hay, it was cheap!!!

04 Z400

Carb: Stock mikuni bsr
Main: mikuni 160
Pilot : mikuni 25
Needle: Alba 5th clip
Fuel screw: 3-3.5 out

HMF full system
Stock airbox w/lid removed
Stock filter
All else stock
About 1k above sea level (kansas/oklahoma)

Still dinkin with it, but it runs right and pulls strong from zero to full.

03 z400

Carb : Stock Mikuni BSR36mm
Main : Dynojet 160
Pilot : Stock(22.5)
Needle : Dynojet Needle on 3rd clip
Fuel Screw : 3.5 turns out

Displacement : Stock 398cc
Pipe : White Brothers R4 full system
Airbox : Stock w/ K&N Pro-Flow kit & Outerwears lid
Cams : Stock
CDI : SRP +1000
Altitude : Close to Sea Level

Runs like a raped ape, very strong all over, very happy with mods :schweet: .

'04 Z400

Carb Type: ---> stock
Main Jet: ---> 160 Mikuni
Pilot Jet: ---> 25
Fuel Screw: ---> 3 turns out
Needle: ---> Alba needle 3rd clip
Airbox: --->no lid, pro-flow & K&N w/ outerwears,snorkle still attached
Pipe: ---> HMF Full
Engine Displacement: ---> Stock
Cams: ---> Stock
CDI: ---> Stock

Dallas, GA

2003 Z400

Carb type: Mikuni Bsr36
Main Jet: 155 Mikuni
Pilot Jet: 22.5
Fuel Screw: 2 Turns out
Needle: Stock
Airbox: Alba k&n, outerware, and adapter. Lid off with snorkle on
Pipe: Stock with the quiet core cut out
Engine Displacement: Stock
Cams: Stock
Cdi: Stock
Altitude: I dont know, whatever cabell, west virginia is

The jetting is spot on. For Just the mods I have done its a decent power increase. Took some time, but its has a very sooth powerband.

Carb Type: ---> FCR 39 off of '04 yfz450
Main Jet: ---> 170
Pilot Jet: ---> 45
Fuel Screw: ---> 2 turns out
Needle: ---> ncvq 4th clip
Leak Jet: ---> #35
Airbox: ---> modified stock lid with outerwears cover, uni filter
Pipe: ---> fnf factory 4 w/ titanium powerbomb
Engine Displacement: ---> Stock
Cams: ---> Stock
CDI: ---> Stock
Altitude: ---> 300'

'05 Z 400

Carb Type: Mikuni 37mm (stock)
Main Jet: Mikuni 172.5
Pilot Jet: Stock
Fuel Screw:2 1/4 turns out
Needle: 2 shims under stock
Airbox: Pro Flow intake with Uni foam filter and lid off.
Pipe: Yoshimura Titanium Pro full exhaust
Engine Displacement: 434cc, JE 12-1 Piston, Nikasil plated bore
Cams: Intake/Exhaust Stock
CDI: Stock
Altitude: 1300ft around the Phoenix area.
Are you happy with the setup: Yes, this thing rips.

Carb Type: ---> Edelbrock 38mmx34mm
Needle Size: ---> 17E
Needle clicks: ---> 16 w/float level raised to 3/4 up overflow tube.
Accel Pump Screw: ---> 3 turns out
Airbox: ---> Stock air box, Snorkle removed, K&N Proflow Lid, Alba adapter with UNI
Pipe: ---> HMF full system
Engine Displacement: ---> 398cc's
Cams: --->Stock
CDI: ---> Stock
Altitude: ---> ~ 1900 ft

Very happy with this setup, plug chop was perfect and I'm hitting the rev limiter in 5th gear.

'05 Z400

Carb--> Stock Mikuni BSR37

Main --> Mikuni 155

Pilot--> Mikuni 25

Airbox--> K&N Alba adapter/ EHS lid

Needle--> Alba 3rd notch stock shim stack

Pipe--> White Brother E2 slip on, stock head pipe

Cams--> Stock

CDI--> Stock

Elev--> sea level

Comments--> Seems to run real strong....very happy

Carb Type: Keihin, FCR40
Main Jet: 160
Pilot Jet: 45
Needle: CRF450 stock 4th clip
Fuel Screw: 3 turns out
Airbox: Custom Aluminum with 400ex tube & K&N
Pipe: Full Yoshi Titanium Tri Oval (shorty muffler)
Engine Displacement: 94mm JE 12.5:1 high comp piston
Cams: Intake/Exhaust (Hotcams)
CDI: Dyna curve #1
Altitude: 1250'

happy with the setup: Yeah, pulls good from the bottom to the top. Still on the (safe) rich side. Dyno 44 hp @ Little Sahara.

05 Z400

Carb Type: Stock Mukini
Main Jet: 165 Mukini jet
Pilot Jet: stock
Needle: stock
Fuel Screw: 2 and a half turns out
Airbox: No snorkel and no lid with pro design intake kit
Pipe: HMF slip-on
Engine Displacement: stock
Cams: stock
CDI: stock
Altitude: sea level

Thats actually the set up imma be going with on saturday....hope it runs fine like that.

Carb Type: ---> Mikuni (stock)
Main Jet: ---> 146 Dynojet
Pilot Jet: ---> 22.5
Fuel Screw: ---> 3.5 turns out
Needle: ---> Dynojet 3rd clip
Airbox: ---> Stock airbox with 5 Airvents and removed snorkle, TwinAir foam-filter
Pipe: ---> Leo Vince X3 slip-on
Engine Displacement: ---> Stock
Cams: ---> Stock
CDI: ---> Stock
Altitude: ---> 300 m


Greetings form Germany

Carb Type: ---> Mikuni (stock)
Main Jet: ---> 146 Dynojet
Pilot Jet: ---> 22.5
Fuel Screw: ---> 3.5 turns out
Needle: ---> Dynojet 3rd clip
Airbox: ---> Stock airbox with no lid and no snorkel. Homemade outerwears.
Pipe: ---> Stock with modified peashooter.
Engine Displacement: ---> Stock
Cams: ---> Stock
CDI: ---> Stock
Altitude: ---> 1800 ft.

I have decrease the main jet from #150 and it goes much better.

carb type--------Keihin 41mm flatslide fcr
team alba racing full system
stock air box with adapter and k&n filter with outerwears
stock cams ---have hot cams.. are they worth putting in??
performance cdi +1000
altitude around 500 feet

my quad runs like (I think it's time for me to enhance my vocabulary and stop trying to use bad words)

ohh ya i forgot to say that the only way i can start my quad is if i either start it while on the charger or i have to catch it in gear....

Danny

Carb Type: ---> 450R (42mm Keihin)
Main Jet ---> 172
Pilot Jet: ---> 48 (stock)
Fuel Screw: ---> 2.5 turns out
Needle: ---> HRC 3rd clip
Airbox: ---> ESR Eliminator w/K&N
Pipe: ---> LRD full system
Engine Displacement: ---> 439cc (Wiseco)
Cams: ---> Hotcams intake & exhaust
CDI: ---> Dyna FS
Altitude: ---> 4200'

Runs great, very happy

04KFX400
Carb Type: ---> Edelbrock 38mmx34mm
Needle Size: ---> 17E
Needle clicks: --->25
Accel Pump Screw: ---> 3.5 turns out
Airbox: ---> Stock air box, Snorkle blocked, K&N Proflow Lid, K&N filter
Pipe: ---> DG EXCL.
Engine Displacement: --->stock
Cams: --->Hot Cams intake
CDI: ---> Stock
Altitude: --->500FT
Piston--->12.2 Wisco
Base gasket--->.10

Preformance and power increased enough to go up a tootk up front in gearing with good results.

Carb Type: ---> Edelbrock 34mm x 38mm Oval
Needle Size: ---> 17E
Needle clicks: ---> 13
Accel Pump Screw: ---> 3?
Airbox: ---> Alba max flow air kit; K&N, Outerwear
Pipe: ---> Slip-on Yoshi
Engine Displacement: ---> wiseco 440 kit
Cams: ---> Stock
CDI: ---> Stock
Altitude: ---> 1600 Ft.

Just installed the Edelbrock. Took it for one test drive, but it was short, and through the snow. So far, I think I like it. Haven't had a chance to tune it, I'm out of gas. So far it seems good. I just did the spring mods, but have yet to try it out.

Carb Type: Mikuni (stock)
Main Jet: 155 DynoJet
Pilot Jet: 22.5
Fuel Screw: 3.5 turns out
Needle: DynoJet 3rd clip
Airbox: PrimeRides K&N with Outerwear, no snorkel
Pipe: HMF Full Sport Exhaust
Engine Displacement: Stock
Cams: Stock
CDI: Stock
Altitude: 175

She pulls hard in every gear.

Carb Type: Stock Mikuni
Main Jet: 145 Mikuni
Pilot Jet: 22.5 (stock)
Fuel Screw: 2.75 turns out
Needle: Alba needle 3rd clip (Dynojet clone)
Airbox: Noss Machine flange with Uni, Snorkle off
Pipe: HMF Slip-on
Engine Displacement: Stock
Cams: Stock
CDI: Stock
Altitude: Couldn't tell ya

mukuni stock
pilot 25
main 155 mukuni
air box no lid, kn filter(outerware) outware for lid, snorkle on
needle third groove DJ
A/F screw two turns out
exhaust Muzzy sli-on
stock gears
sea level


funny story, it stumbles only at full thottle when running into the wind. scream mercy running out of the wind. Tell me what simple adjustment needs done.

Carb Type: FCR 40mm 2004
Main Jet: 200
Pilot Jet: 50
Fuel Screw: 3 out
Needle: 4th notch from top (7 notch needle)
Airbox: UM w/ K&N air filter 4" throat ID 6-1/2" length
Pipe: Yoshi Carbon TRS Series Ti full
Engine Displacement: 469cc
Cams: Web Cams full race no autodecompression
CDI: Dyna FS adjustable Curve #1
Altitude: 600 ft to 2500 ft
Gearing: 13/40 soon to be 13/38
Spark Plug: CR7E NGK

Are you happy with the setup: Yes - torque monster, rips. reliable

This is my cold-season-setup:

Carb Type: Mikuni (stock)
Main Jet: 155 DynoJet
Pilot Jet: 22.5 (stock.. this will be changed soon - too lean atm)
Fuel Screw: 3.5 turns out
Needle: DynoJet 4th clip
Airbox: Stock- snorkel off, 9 Airvents, K&N
Pipe: FMF Powerbomb + LeoVince X3 Slipon
Engine Displacement: Stock
Cams: In: Stock, Ex: Hotcams Stage 2 w/o DeKo
CDI: QBRacing CDI +1000
Altitude: 90 meters
Gearing: 15/40

Carb Type: yfz fcr39
Main Jet: 170
Pilot Jet: 48
Fuel Screw: 3.25
Needle: stock
Airbox: stock with a whole lot of holes
Pipe: Full Alba Race pipe
Engine Displacement: 440 (13.4) Drz
Cams: Hotcams stage II
CDI: Alba
Altitude: 1000ft

Carb Type: Mikuni (stock)
Main Jet: 160 Mikuni
Pilot Jet: 25 Mikuni
Fuel Screw: 2.5 turns out
Needle: didn't mess with it
Airbox: Open with K&N - snorkel off
Pipe: HMF Full Sport Exhaust
Engine Displacement: Stock
Cams: Stock
CDI: Stock
Altitude: 1200'

I can say...I've had this quad since June and should have changed the filter, pipe, and jetting when I first got it...it's a whole new machine now.

2003 KFX400 (ZooDad)

Carb type: Mikuni BSR36
Main Jet: 160 Mikuni
Pilot Jet: 25
Fuel Screw: 2.5 Turns out
Needle: Alba 3rd Clip
Airbox: Noss K&N, outerware, and adapter. Lid off with snorkle off
Pipe: Pro Circuit T4 Full
Engine Displacement: Stock (DRZe 12.2 comp)
Cams: Hot Cams Stage 2 (Gen 1)
Cdi: DynaTek (Non Adj)
Altitude: Sea Level -3000 (desert)

Seems fat during the warmer months will drop to 155-157.5 and maybe 4th clip at higher locations.

2003 Z400 (ZooMom)

Carb type: Mikuni BSR36
Main Jet: 155 Mikuni
Pilot Jet: 25
Fuel Screw: 2.5 Turns out
Needle: Alba
Airbox: Alba K&N, outerware, and adapter. Lid off with snorkle on
Pipe: Pro Circuit slip-on
Engine Displacement: Stock (DRZe 12.2 comp)
Cams: Hot Cams Stage 1 (Generation 2)
Cdi: DynaTek (Non adj)
Altitude: Sea level - 3000 (desert)

Runs very strong in all ranges (trail tested only so far) Will try 4th clip at higher locations.

05 KFX

carb: stock
main jet: 170
pilot jet: 25
fuel screw: stock
needle: stock
airbox: no lid, twin air power flow kit
pipe: duncan
displacement: stock
cams: stock
cdi: stock
altitude: tenn

haven't had a chance to ride it much yet just went from 165 main with lid on to 170 w/o lid so we will see, it was a little rich with the lid on before, but would not run with lid off, seems to be running good now though

06 Orange KFX400

Carb- Stock 37mm
Main- Dynojet 160
needle- DJ on 3rd clip
pilot- Mikuni 25cfm
pilot screw 3.5 turns
no lid or snorkle
K/N air filter
Pipe- Full Yoshi Comp Carbon Fiber

Engine 100% stock

Tried messing with it and got it close. Got frustrated and took it to dealer .
Dialed in by Dealer with sniffer for 75 bucks. He added the pilot.
Seems to run REAL nice!

Altitude roughtly 1100 feet in Godyear AZ.

MUX

Carb stock 37mm mikuni
Main jet. 162.5 Mikuni or 174 Dyna used a drillbit on a 150 mukuni drilled to .0685. the metric conversion is 1.7399mm which is a 174 dyna

needle. stock position'
fuel screw 2 out
Piolet stock jet
Full HMF sport series
Air box lid off with modification to stock box to increase airflow
engine stock
Elevation 580 Ft.

30.2 hp 24.5ft/lbs torque Dynoed on a Dynojet 168
strong torque curve from 4000 rpm to redline

Carb Type: Keihin FCR41mm w/custom 62mm intake flange
Main Jet: 192
Pilot Jet: 62
Fuel Screw: 3.0 turns (depending on conditions)
Needle: FCR
Airbox: ESR trx450r Kit w/outerwear
Pipe: Full HMF Sport
Engine Displacement: 470cc Compression ratio: 13.5:1
Cams: Both Custom Grind Web Cams
CDI: Vortex
Altitude: 2500 ft.

head porting run 118 octane Vp

05 z
stock 37 bsr
main jet: 160
pilot jet: 25
fuel screw: stock
needle: stock
airbox: K&N filter-K&N powerlid-snorkel on
pipe: WB s-bend slip on-18 disc- WB headpipe
engine: Athena 434 kit
cams: stock
altitude: 3000ft at camp- 6000ft at top lookout

just put in athena kit and dropped main to this and upped pilot
havent checked out burn yet

2005 Z400 (Winter Jetting, Summer jetting uses a 150 main)

Carb Type: ---> 37mm Mikuni (stock)
Main Jet: ---> 155 Mikuni
Pilot Jet: ---> 25
Fuel Screw: ---> 2 turns out
Needle: ---> Alba Needle 3rd clip
Airbox: ---> EHS Racing lid, NOSS adapter, K&N filter
Pipe: ---> Yoshimura Pro Titanium full system
Engine Displacement: ---> Stock
Cams: ---> Stock
CDI: ---> Stock
Altitude: ---> 850'

Runs strong througout the powerband. I verified the jetting with the choke pull test and everthing was spot on.