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Old February 27th, 2012, 06:17 AM   #81
kawi
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Location: Weston
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Motorcycle(s): 2008 Ninja 250r

Posts: 20
YEAR: 2008 ninja 250r

INTAKE MODIFICATIONS: Airbox deletion; K&N Air Filter 0990; Crank case breather

EXHAUST MODIFICATIONS: Hot Bodies Growler Slip On

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 110

NEEDLE AND CLIP POSITION: 3rd from top

MIXTURE SCREW SETTINGS: 2 1/2 turns out

ELEVATION: 500 to 1500

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Fired it up today 2.26.12 and it was like 32 degrees out and sunny. I took her for a ride around the block. A hair on the rich side (just slightly) but thats to be expected in the lower temps. Ill update when it hits 50+ temps.
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Old March 17th, 2012, 10:48 AM   #82
kawi
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Quote:
Originally Posted by kawi View Post
YEAR: 2008 ninja 250r

INTAKE MODIFICATIONS: Airbox deletion; K&N Air Filter 0990; Crank case breather

EXHAUST MODIFICATIONS: Hot Bodies Growler Slip On

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 110

NEEDLE AND CLIP POSITION: 3rd from top

MIXTURE SCREW SETTINGS: 2 1/2 turns out

ELEVATION: 500 to 1500

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Fired it up today 2.26.12 and it was like 32 degrees out and sunny. I took her for a ride around the block. A hair on the rich side (just slightly) but thats to be expected in the lower temps. Ill update when it hits 50+ temps.
INTAKE MODIFICATIONS: Airbox deletion; K&N Air Filter 0990; Crank case breather

EXHAUST MODIFICATIONS: Stock (Couldnt stand how loud and annoying the Growler was)

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 112

NEEDLE AND CLIP POSITION: 2nd from top

MIXTURE SCREW SETTINGS: 2 turns out

ELEVATION: 500 to 1500

Runs 10 times better now.
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Old March 17th, 2012, 11:20 AM   #83
choneofakind
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Location: Western NC
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INTAKE MODIFICATIONS: intake lid modified, new oem filter

EXHAUST MODIFICATIONS: Full Muzzy exhaust

JET KIT OR STOCK? Stock

BRAND OF JET KIT? Keihin

MAIN JET: 108

NEEDLE AND CLIP POSITION: 4 washers

MIXTURE SCREW SETTINGS: just under 2.75 turns out

ELEVATION: 1,066 ft (according to Wikipedia)

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: The bike rips at WOT on the 108 mains. The mid-range is very smooth, and pulls from all rpms/throttle openings without surging or hesitation. Very happy with this setup until my EFI kit gets here, then I won't have to worry about jetting anymore.

I also replaced all 16 screws that hold the caps and bowls with M4x16 hex head screws. No more stripped screws.

EDIT: edited my post for updates
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Last futzed with by choneofakind; May 13th, 2012 at 12:46 PM.
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Old March 19th, 2012, 11:33 PM   #84
abhijitz
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YEAR: 2008

INTAKE MODIFICATIONS: Stock Filter replaced with BMC Air Filter and Metal Screen Taken off

EXHAUST MODIFICATIONS: AreaP 12" CF Full system

JET KIT OR STOCK? JetKit

BRAND OF JET KIT? Factory Pro

MAIN JET: 92 FP

PILOT JET : 40 FP

NEEDLE AND CLIP POSITION: circlip on slot #3, 2 washers on top, circlip on slot #1.

MIXTURE SCREW SETTINGS: 2.5 turns out

ELEVATION: 105 ft

Notes : Yet to verify jetting changes. I am going to suggest FP to put in 8 more hex bolts for the carb bowls. They provided only 8 and i used them for the hard plastic cover of the carb diaphragm.
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Old March 25th, 2012, 06:41 PM   #85
Slono
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YEAR:2011

INTAKE MODIFICATIONS: Stock

EXHAUST MODIFICATIONS: Area P 18" Quiet Core (carbon)

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Dynojet

MAIN JET: Dynojet #100

NEEDLE AND CLIP POSITION: Dynojet Needle, clip on 3rd notch

MIXTURE SCREW SETTINGS: 3.5 turns out

ELEVATION: 0-100



My bike pulls like a demon all the way through the powerband up to 140 km/h. I have not been able to test the redline in 6th gear because I'm afraid I'd get caught by highway patrol. With that being said, I still have a problem with my idle. When I blip the throttle it hangs a bit before returning back to the pre-set (by me) 1500 rpms.

Edit: I put sea foam in my tank and it cleared up all the issues. My bike runs really well now, but i have yet to figure out the fuel consumption. I may be running a tad rich.

Last futzed with by Slono; March 28th, 2012 at 06:37 AM.
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Old April 18th, 2012, 10:44 AM   #86
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update: Now 2 turns out. Tried one turn but it was not running well. Getting a solid pop when I chop the throttle, and some popping on low-throttle deceleration. Would like to get rid of that... but any more out on the screws and I get the symptoms of over-rich.

Quote:
Originally Posted by adouglas View Post
YEAR: 2008

INTAKE MODIFICATIONS: Snorkel removed, K&N panel filter in stock airbox, Kleen Air system removed and holes plugged

EXHAUST MODIFICATIONS: AreaP QuietCore full exhaust

JET KIT OR STOCK? Jet kit

BRAND OF JET KIT? FactoryPro

MAIN JET: Stock (Keihin #98)

NEEDLE AND CLIP POSITION: Per FactoryPro starting point recommendation - clip in third groove from the top, three washers above

MIXTURE SCREW SETTINGS: Initially 2 1/2 turns out, now 2 1/4, going to try 2 flat. The bike runs just fine at all rpms and loads, but when the throttle is blipped at idle the speed drops below the idle set point and returns.

ELEVATION: Sea level to about 150 feet

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

- Pilot jet replaced with the #40 alternate that came in the jet kit
- DynoJet dynamometer results:
- Peak HP 28.91
- Peak torque 14.37

The dyno guy said "You're fine... you don't need to do anything." He also said his dyno is a bit "tight" and the real numbers may be slightly higher.

Air/fuel was dancing around the "ideal" line... maybe just a tiny bit on the rich side of things overall, but not enough to warrant making any changes.

Fuel economy after a week and two tanks of fuel is between 55 and 63 mpg, driveability is excellent, choke is not needed at startup, and the sound is to die for.

A huge THANK YOU to kkim, who recommended this exact setup. Except for the idle mixture screw settings, he enabled me to nail it on the first try!
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Old April 22nd, 2012, 01:59 PM   #87
zzrguy
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Location: Guelph
Join Date: May 2011

Motorcycle(s): 2002 ZZR 250

Posts: 127
YEAR: 2002 ZZR Ninja 250

INTAKE MODIFICATIONS: K&N R-0990

EXHAUST MODIFICATIONS: Two Brothers Aluminum slip on's

JET KIT OR STOCK? Jet KIT

BRAND OF JET KIT? Dyno Jet

MAIN JET: 114

NEEDLE AND CLIP POSITION: Stage 3, position 3, 2 washers

MIXTURE SCREW SETTINGS: Stock

ELEVATION:1,096 feet (334 m)

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
Pulls very hard from 8k- to redline. When on the throttle its great but if, i let off the throttle then it feels not as responsive when i try to get back on it .
Debating if I should go to 110 dynojet or keep the 114 and change clip position
dynojet 114 seems really high compared to what some of you guys are running, I looked at the hole differences from the 105 stock Keihin and its almost triple.
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Old May 19th, 2012, 02:15 PM   #88
GlassAnkles
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Name: Mo
Location: KS
Join Date: Jan 2012

Motorcycle(s): 02 zx-12r, 13 zx-10r abs

Posts: 245
YEAR: 2012
INTAKE MODIFICATIONS: Snorkel removed, Uni Filter Panel Filter
EXHAUST MODIFICATIONS: Yosh Full Exhaust, Kleen Removed
JET KIT OR STOCK: Kit
BRAND OF JET KIT: Dynojet Stage 2
MAIN JET: DJ 98
NEEDLE AND CLIP POSITION: 3 from top, then another placed 1 from top, no washers
Pilot Jet: Keihin 42 ordered separate
MIXTURE SCREW SETTINGS: 1.5
ELEVATION: Sea level

MISCELLANEOUS: Went from dynojet to factory pro then back to dynojet. the factory pro was close but the top end lagged no matter what settings, idle and just off idle was terrible with the 40 pilot jet. I would go from 2 turns thru 2.5 and it would fluctuate and/or drop below the set RPM. the 42 is critical IMO.

My theory is the 40 is to much fuel over the air in the mixture, the 42 makes it a better blend at 1.5 turns out. all dirt bike tuners say if its over 2 turns you need to go up one on the pilot.

Last futzed with by GlassAnkles; May 19th, 2012 at 09:35 PM.
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Old May 19th, 2012, 03:21 PM   #89
abhijitz
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Tried diff mainjet sizes and diff A/F mixture. When warmed, 90 mainjet was best. I really couldnt notice a difference between 88 and 90 except with 88 i had to do 2.75 turns OUT on the A/F mixture screw. I just didnt like how my idle was, and rather than messing with the pilot went back to 90 mainjet.

I think with the switchover to LeoVince i will get at least 1.5 HP more. The AreaP doesnt seem strong enough.

Currently i am at 90 mainjet, 2 turns on A/F mixture screw.

I am going to try out another carb with Dynojet kit soon.

Quote:
Originally Posted by abhijitz View Post
YEAR: 2008

INTAKE MODIFICATIONS: Stock Filter replaced with BMC Air Filter and Metal Screen Taken off

EXHAUST MODIFICATIONS: AreaP 12" CF Full system

JET KIT OR STOCK? JetKit

BRAND OF JET KIT? Factory Pro

MAIN JET: 92 FP

PILOT JET : 40 FP

NEEDLE AND CLIP POSITION: circlip on slot #3, 2 washers on top, circlip on slot #1.

MIXTURE SCREW SETTINGS: 2.5 turns out

ELEVATION: 105 ft

Notes : Yet to verify jetting changes. I am going to suggest FP to put in 8 more hex bolts for the carb bowls. They provided only 8 and i used them for the hard plastic cover of the carb diaphragm.
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Old May 22nd, 2012, 10:09 AM   #90
NinjaJim5
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Location: Saint Augustine, Florida
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Motorcycle(s): 2009 Ninja 250R

Posts: 8
Thumbs up

YEAR: 2009

INTAKE MODIFICATIONS: Air Box Removed, K&N R-0990 Pod Filter, Kleen Air System Removed.

EXHAUST MODIFICATIONS: Yoshimura TRC Slip On

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Factory Pro

MAIN JET: 112

PILOT JET: 40

NEEDLE AND CLIP POSITION: 2 with one washer underneath for half adjustment.

MIXTURE SCREW SETTINGS: Not sure. 2 turns out initially then fine tuned.

ELEVATION: Sea Level (Florida)

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

Bike starts up a lot easier and warms up quick. Pulls hard all the way to red-line. Very smooth power delivery. Needle was originally set on 3rd clip and ran too rich. Then moved to 2nd clip and ran better but a tad to lean, had surging in mid range. Added a washer for half adjustment and runs great, surging gone. This is probably where the jetting will remain on my bike. After I get some more seat time I may tweak more.
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Old June 17th, 2012, 03:49 PM   #91
Asspire
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Name: Asspyre
Location: T.Dot
Join Date: Oct 2011

Motorcycle(s): 08 250RRrrrr

Posts: 623
YEAR: 2008

INTAKE MODIFICATIONS: Air Box Removed, K&N R-0990 Pod Filter, Kleen Air System Modified (plugged for now).

EXHAUST MODIFICATIONS: Area P Quiet Core Full SS system

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Dyno Jet Stage 2 Area P Customized

MAIN JET: 108

PILOT JET: 40

NEEDLE AND CLIP POSITION: Jet kit needles with E clip in third position, one washer under and one above.

MIXTURE SCREW SETTINGS: was 2 turns out, now I have no idea.

ELEVATION: 150 ft according to gps.

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:

installed jet kit with 98 main with areap exhaust and stock intake and 2 washers above E clip, pulled good throughout the rpm range. Installed pod filters with stock runners and crankcase breather, started with a 104 main and stock pilot. Wouldn't start without choke when cold, low end was lean and pulled ok from 6k to 8k then leaned out till redline. Jumped straight to a 108 main and reset idle mixture screws 2 1/2 turns, low end still lean, idled erratically, slight pop on decel, after 8k pulled great. Installed 40 pilots and put one washer under E clip in third position. Still needs choke to start, idle is a little off, pulls pretty evenly from around 4k till redline. Synced carb, idles a little better but still off, can't seem to get it "dialed in" right.

took it to a dyno day to see where its at, 30.8 hp, seems pretty good, going to fiddle with the mixture screws to see if I can make the low end better, if not, it'll stay as it is.
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Old July 31st, 2012, 09:25 AM   #92
LoD575
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Location: Valdosta GA, US
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Motorcycle(s): 2012 Ninja 250, 2006 Ninja ZX6R-636

Posts: 661
Year: 2012

Intake Mods: Air box removed, K&N R0990, Kleen system removed

Exhaust Mods: Area P Standard 12" stainless system

Jet Kit or Stock: Jet Kit

Brand of Jet Kit: Sportisi (Dynojet)

Main Jet: 105 DJ

Pilot Jet: Stock 38

Needle and Clip position: Jet kit needles, clip in 2nd position

Mixture Screw Setting: 2.25ish turns out

Elevation: 4250 ft

Misc Information about Jetting setup:
Started first on pilot circuit. #40 Pilots ran way too rich, swapped back to stock 38. Tuned idle mixture by idle speed and sound. Throttle returns nicely after blip. Started with 108 main, switched to 105 main, and tried 102.5 main. 105 provided best feel to redline. Started with clip in 3rd position, ran decent, 3rd position with washer ran decent but rich 4th position overly rich. 2nd position with washer ran great. 2nd position mid range feel nice and crisp.

Engine would bog and stumble around 2-3K when taking off from stop. Changed float bowl fuel height from 17mm to 18mm, took care of low end stumble.

Bike pulls beautifully from 3k to redline. Plugs look good so far, going to keep this setup for now and check plugs again after tank of gas.

Only change I'm looking at making is possibly going back and adding a washer underneath the needles.
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Old August 18th, 2012, 12:45 PM   #93
mkulchar
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Name: matthew
Location: niagara
Join Date: Jul 2011

Motorcycle(s): 2010 250r ninja

Posts: 115
YEAR: 2010

INTAKE MODIFICATIONS: Snorkel removed, Kleen Air removed, Pipercross Air Filter

EXHAUST MODIFICATIONS: Full Sportisi VRX SS

JET KIT OR STOCK? Jetkit

BRAND OF JET KIT? Sportisi

MAIN JET:98Sportisi (dj size)

NEEDLE AND CLIP POSITION: 2nd clip from the top, Titanium neddle

MIXTURE SCREW SETTINGS: 3 turns from fully closed

ELEVATION:sea to 1500ft

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Bike pulls good tho all range, dyno show rich/dead spot at 8-9krpm but not noticeable when rideing. Otherwise runs great at all speeeds.

Stock was getting 22hp after mod 28.42
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Old August 19th, 2012, 07:00 AM   #94
bprayogo
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Motorcycle(s): N250R

Posts: 101
Quote:
Originally Posted by mkulchar View Post
YEAR: 2010

INTAKE MODIFICATIONS: Snorkel removed, Kleen Air removed, Pipercross Air Filter

EXHAUST MODIFICATIONS: Full Sportisi VRX SS

JET KIT OR STOCK? Jetkit

BRAND OF JET KIT? Sportisi

MAIN JET:98Sportisi (dj size)

NEEDLE AND CLIP POSITION: 2nd clip from the top, Titanium neddle

MIXTURE SCREW SETTINGS: 3 turns from fully closed

ELEVATION:sea to 1500ft

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Bike pulls good tho all range, dyno show rich/dead spot at 8-9krpm but not noticeable when rideing. Otherwise runs great at all speeeds.

Stock was getting 22hp after mod 28.42
Great you finally got it sorted out
Please be informed that Sportisi kit is NOT a copy of Dynojet Kit. the needle is different and will give you more mid to top end power!
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Old February 21st, 2013, 10:55 AM   #95
Alex
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Old March 3rd, 2013, 07:15 AM   #96
mariorivera830
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Going to need help when my exhaust comes.

I've been reading up on the whole jet kit thing, and I would like to know if there is anyone in the Riverside/Temecula/Ontario part of CA, that could help me with a baseline to get started with. Once that exhaust comes in, I would like to fidget with it as little as possible. If there is someone close to my area, I can start with what they're running (with altitude and temp adjustments made) and made adjustments off of that.

An extra set of eyes might help too, once installation time comes. Dinner is on me! Well, actually it's up to the wife, cause I can't cook unless it's a peanut butter and jam sandwich.
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Old March 3rd, 2013, 11:09 PM   #97
tom2knox
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Name: marc
Location: tondo manila
Join Date: Feb 2012

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Anyone here use a sportisi kit?

I'm a little confused regarding installation of the clip, from 2nd to top, below is the picture, anyone do comment if I am in the right path...
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Old March 4th, 2013, 01:05 AM   #98
lucowen
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Quote:
Originally Posted by tom2knox View Post
Anyone here use a sportisi kit?

I'm a little confused regarding installation of the clip, from 2nd to top, below is the picture, anyone do comment if I am in the right path...

Hi Mark, you're here also...
you're in correct path... just continue to install washer, clip again and washer again... Make sure you install everything...so the jet needle works properly.

thanks,
K - sportisi indonesia
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Old March 4th, 2013, 01:28 AM   #99
tom2knox
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Quote:
Originally Posted by lucowen View Post
Hi Mark, you're here also...
you're in correct path... just continue to install washer, clip again and washer again... Make sure you install everything...so the jet needle works properly.

thanks,
K - sportisi indonesia
Just read your mail sir, by the way thanks a bunch! hope to install it 2morow ^_^
I have a follow up question, if i will replace my jettings, does synchronizing the carbs necessary?
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Old March 4th, 2013, 08:50 AM   #100
mkulchar
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Make sure you all the provided e-clips ans plastic washers. Otherwise thw nwedle will shake in the
carb and cause issues. E-clip then washer then eclip then washer.

Im using sportisi kit and tou have to use them all.
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Old March 7th, 2013, 06:31 PM   #101
tom2knox
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Hi everyone, I'm having problem with mine, after pulling the throttle, the RPM slowly goes down, is this something to do with the mixture? After installation of the kit, the mechanic sync the carbs, but I don't know if he played with the mixture screw. The mechanic did not removed the snorkel too. Please help me, the bike is stock on the garage because of the RPM slowly pulls down whenever you rev the throttle. Thanks in advance.

By the way I used the 98 sportisi main jet and the 38 stock pilot jet, I did do the second from top clip needle then washer then clip then washer thing in the needle.
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Old March 10th, 2013, 05:04 PM   #102
tom2knox
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Quote:
Originally Posted by tom2knox View Post
Hi everyone, I'm having problem with mine, after pulling the throttle, the RPM slowly goes down, is this something to do with the mixture? After installation of the kit, the mechanic sync the carbs, but I don't know if he played with the mixture screw. The mechanic did not removed the snorkel too. Please help me, the bike is stock on the garage because of the RPM slowly pulls down whenever you rev the throttle. Thanks in advance.

By the way I used the 98 sportisi main jet and the 38 stock pilot jet, I did do the second from top clip needle then washer then clip then washer thing in the needle.
Problem solved, I adjusted the A/F mixture to 2 3/4, runs perfect as of now ^_^
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Old March 11th, 2013, 10:51 AM   #103
ricomtzjr
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Name: Richard
Location: El Paso, San Antonio, Ennis...Texas
Join Date: Nov 2012

Motorcycle(s): 2007 Sportster XL1200C

Posts: 196
YEAR:

INTAKE MODIFICATIONS:

EXHAUST MODIFICATIONS: Stock

JET KIT OR STOCK? Stock

BRAND OF JET KIT? Stock

MAIN JET: Stock

NEEDLE AND CLIP POSITION: 1 washer shim

MIXTURE SCREW SETTINGS: not adjusted...yet

ELEVATION: sea level-4000 ft

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
Here in El Paso, TX I started using two washers with success. Had some military training down in San Antonio and dropped down to one washer. Now that I am back in El Paso, I have noticed that I have a surge of power starting at about 5-6k rpm, and a bog down low when it's cold. Once it is warm, it all goes away. Looks like I'll have to tackle the mixture screw to work that out. Snorkel removed.
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Old March 15th, 2013, 06:51 PM   #104
GlassAnkles
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Name: Mo
Location: KS
Join Date: Jan 2012

Motorcycle(s): 02 zx-12r, 13 zx-10r abs

Posts: 245
YEAR: 2005
INTAKE MODIFICATIONS: k&n r-0990 with outerwears pre-filter
EXHAUST MODIFICATIONS: muzzy full exhaust system, custom 6" long 1.5" reducer
JET KIT OR STOCK: kit
BRAND OF JET KIT: factory pro
MAIN JET: 112
NEEDLE/CLIP: 3.5 from top (3 down then 1 washer under). then another e-clip 1 down so needle doesn't wiggle
Pilot Jet: 40
MIXTURE SCREW SETTINGS: 2
ELEVATION: Kansas Sea level

MISCELLANEOUS: holy crap this bike is particular about its jetting, 3 down on the needle it would hesitate cruising at 40-50 in 5th gear, 4 down it would bog from rolling starts.
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Old March 21st, 2013, 11:04 AM   #105
mkulchar
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Bumb.

Alex you should sticky this thread, cause it is highly valuable
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Old March 21st, 2013, 12:27 PM   #106
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It's linked from the main DIY sticky thread. That area would get way too busy if every useful tech thread was sticky, which is why that reference thread helps organize things.
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Old March 24th, 2013, 02:36 PM   #107
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Motorcycle(s): 08 250r, blue

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YEAR: 2008 w 4,xxx miles

INTAKE MODIFICATIONS: k and n dual air pod

EXHAUST MODIFICATIONS: area p full 18" carbon fiber mid high race system

JET KIT OR STOCK? area p custome dyno jet

BRAND OF JET KIT? Dyno jet

MAIN JET: 110

NEEDLE AND CLIP POSITION: e clip on 3rd slot from the top of needle, then 2 washers on top of that, and the other e clip on top of washers to hold in place

MIXTURE SCREW SETTINGS: id say about 2 and 1/4 turns from all the way closed

ELEVATION: 7,420 ft !!!!

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: Havent gotten a chance to ride it yet with the setting but i got the bike warm and adjusted the idle screw. RPMs dont hang anywhere and blips right away with throttle. Feel like the throttle is sticking a bit and i know its not the grips. Gonna have to adjust the throttle cable a smudge. Other than that it sounds BEAST. Thanks area p and all the DIYs on this site
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Old May 19th, 2013, 02:58 PM   #108
subxero
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MOTM - Apr '14
YEAR: 2012 w 5,xxx miles

INTAKE MODIFICATIONS: POD, Kleen air removed, PSR block off plate

EXHAUST MODIFICATIONS: Nojima moto GP full race

JET KIT OR STOCK? Kelhin jets

BRAND OF JET KIT? bought jets from jetsrus

MAIN JET: Kelhin 110

Pilot Jet: #40

NEEDLE AND CLIP POSITION: Stock needles, 5 #4 washers ~ 0.12 total height raised.

MIXTURE SCREW SETTINGS: haven't messed with yet
ELEVATION: 0-3000 feet

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: BRT-Tis programmable, timing advanced over majority of range compared to stock, Originally put on full exhaust, and pod mod, then put in 115 mains and #40 pilot, with 3 #4 washers ~ 0.09" raised. Felt rich at WOT, so so at 1/2 throttle, 1/8-1/4 felt decent. Lots of decel popping/backfiring. Threw in 118 main as they were all i had, just to see what they did. Was definitely rich at WOT at high RPM, mid range felt decent, at 1/2 throttle and mid range felt pretty good as well.
Tore exhaust back off and sealed every joint (no more decel popping backfire) Threw in 112 main's WOT felt better at high rpm, mid rpm felt poor. With choke on and 1/2 throttle mid range felt better. Must be lean.

Shimmed to 5 washers, 110 main jets and the bike feels completely different so much improved through out the rev range.

Might try the 108 main jets to see if they are better or worse, only way to find out.

Last futzed with by subxero; June 2nd, 2013 at 03:43 PM.
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Old June 2nd, 2013, 03:39 PM   #109
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So curiosity got the best of me and i sprung for the Factory Pro stage 3 kit for the needles.

Did not ask anyone but was hoping it would come with 108 main jets.... it did not. 110-115's and a 40 pilot.

So my current set up with stock needles 5 washers, 40 pilot, 110 mains the bike runs good 1/4th throttle to redline, rich at 1/8th-1/4th throttle.

I was gonna go back to the 38 stock but instead put in the factory pro needles today and kept jets the same. I guessed on the clip settings based on my stock needle shims and comparing the two different needles.

Figured i would just share some pictures of the two needles side by side.

So FP needle on the top and the stock needle on the bottom. In the full needle shot it is easy to see how long the FP needle is compared to the stock needle. Even with the factory having the clips in the #4 position.
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Old June 9th, 2013, 03:42 PM   #110
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New setup

YEAR: 2012 w 5,xxx miles

INTAKE MODIFICATIONS: POD, Kleen air removed, PSR block off plate

EXHAUST MODIFICATIONS: Nojima moto GP full race

JET KIT OR STOCK? Kelhin jets

BRAND OF JET KIT? bought jets from jetsrus

MAIN JET: Kelhin 110

Pilot Jet: #40

NEEDLE AND CLIP POSITION: Factory Pro needles, clip in #2 position with 1 of their shims underneath

MIXTURE SCREW SETTINGS: haven't messed with yet
ELEVATION: 0-3000 feet

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: BRT-Tis programmable, timing advanced over majority of range compared to stock. Bike runs very good through all throttle positions. Think this setup will be lean in the 1/8th - 1/2 throttle range come winter but is perfect for summer riding.
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Old October 6th, 2013, 12:12 PM   #111
KrazyWalle
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Motorcycle(s): 2010 Kawasaki Ninja 250R (Passion Red, Ca Model)

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YEAR: 2010

INTAKE MODIFICATIONS: Airbox removed, Kleen air removed/blocked, Uni individual pod filters no runners, Polished the carb throats..

EXHAUST MODIFICATIONS: Full 12" AreaP system, can repacked with moose racing fiber glass

JET KIT OR STOCK? Kit

BRAND OF JET KIT? Dynojet Stage 3

MAIN JET: 108

NEEDLE AND CLIP POSITION: DJ needles, eclip in 3rd position with two washers on top

MIXTURE SCREW SETTINGS: 3 1/2

ELEVATION: 400~600

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
Bike feels amazing from 5k-redline, throttle is still snappy in the mid range. It's now possible to do small wheelies : ) considering i have a 15T front sprocket that's a good feat. There is no hesitations or bogging, misses half throttle to wide open. Motor sounds way better with all the intake noise, a little to loud at times. The only issues I'm having Is the low end idle 1/4 throttle. It's having a hard time holding a consistent idle have to re adjust after the bike is warmed up. I've Messed with the screws from 2 1/2 to 3 1/2 and it still feels sluggish to take off. It's like it's trying to catch up, and hesitates to go. Once it hits 4.5k it just goes and comes alive to redline. Also when it's cold if I apply the choke, Idle drops way low and engine cuts off, unless you blip the throttle. I might turn the screws out more, which usually means I need a bigger pilot... I will also try and add another washer see if that helps any.. But for now I have to ease into the throttle or just rev it to 2.5-3k and take off..
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Old October 7th, 2013, 09:02 AM   #112
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Quote:
Originally Posted by KrazyWalle View Post

I've Messed with the screws from 2 1/2 to 3 1/2 and it still feels sluggish to take off. It's like it's trying to catch up, and hesitates to go. Once it hits 4.5k it just goes and comes alive to redline. Also when it's cold if I apply the choke, Idle drops way low and engine cuts off, unless you blip the throttle. I might turn the screws out more, which usually means I need a bigger pilot
I think you have it backwards, But then again so could I.

Turning the screws out means more air, you need more air because you already have to much fuel (rich). 3.5 turns out is a good bit, are you running the stock pilot or #40? if you have the 40 in I would go back down to the stock #38. if you still have the #38 then I would make sure the needles are seated correctly and everything else is good, vac lines, slides, diaphragm's ect... if that all checks out, give a lower pilot a shot.

Other reasons I think your idle circuit is rich is you say choke kills it. Choke gives more fuel, since you are already rich the choke makes it even more rich and poof it stalls.
other hint, you say if you blip throttle it doesn't stall. By twisting the throttle you are engaging main jet circuit which in the 1/4-1/2 throttle range is controlled by the needle. Therefore getting out of the idle circuit which is to rich and causing the stall.
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Old October 7th, 2013, 10:17 AM   #113
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I fixed it, turn the screws in till the engine almost cuts out, then back out too set idle. I did this on both and sync the carbs, problem fixed. I guess I was way to rich... And I have the stock 38s in it. Plus there was also a small vacuum hose disconnected. I didn't realize this till about a hour in of trying to sync the carbs. No wonder it kept fluctuating..
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Old October 7th, 2013, 11:24 AM   #114
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MOTM - Jun '18, Oct '16
Quote:
Originally Posted by subxero View Post
I think you have it backwards, But then again so could I.

Turning the screws out means more air, you need more air because you already have to much fuel (rich). 3.5 turns out is a good bit, are you running the stock pilot or #40? if you have the 40 in I would go back down to the stock #38. if you still have the #38 then I would make sure the needles are seated correctly and everything else is good, vac lines, slides, diaphragm's ect... if that all checks out, give a lower pilot a shot.

Other reasons I think your idle circuit is rich is you say choke kills it. Choke gives more fuel, since you are already rich the choke makes it even more rich and poof it stalls.
other hint, you say if you blip throttle it doesn't stall. By twisting the throttle you are engaging main jet circuit which in the 1/4-1/2 throttle range is controlled by the needle. Therefore getting out of the idle circuit which is to rich and causing the stall.
The idle mixture screws on the Ninja's carbs are fuel-bleeds, so turning them OUT will let more fuel flow and make it RICH. The opposite is true if the idle mixture screws are air-bleeds (like most Honda dirt bikes).

Yes - if you add choke and it runs worse, you are already rich.

Generally, adjusting the idle mixture screw to get the highest idle speed is a good start. There are times when you will want to go slightly richer on that adjustment to help get a smoother transition to the needle.
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Old October 7th, 2013, 11:26 AM   #115
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partial credit awarded?

I haven't really messed with my idle screws themselves on the ninja so I wasn't sure and yes I was talking from dirtbike experience
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Old October 7th, 2013, 11:29 AM   #116
jkv45
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MOTM - Jun '18, Oct '16
Quote:
Originally Posted by subxero View Post
partial credit awarded?

I haven't really messed with my idle screws themselves on the ninja so I wasn't sure and yes I was talking from dirtbike experience
You bet.

Most of my experience is on carbs with air-bleeds also, so I have to stop and think about it when tuning the Ninja.
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Old July 22nd, 2014, 05:56 AM   #117
subxero
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MOTM - Apr '14
judging from last post apparently I am the only person still messing with their getting

So latest updates here is my latest set up

YEAR: 2012 w 10k miles

INTAKE MODIFICATIONS: POD, Kleen air removed, PSR block off plate

EXHAUST MODIFICATIONS: Nojima moto GP full race

JET KIT OR STOCK? Kelhin jets, FP needles

BRAND OF JET KIT? bought jets from jetsrus

MAIN JET: Kelhin 108

Pilot Jet: #40

NEEDLE AND CLIP POSITION: Factory Pro needles, clip in #3 position with 1 of their shims underneath

MIXTURE SCREW SETTINGS: haven't messed with yet
ELEVATION: 0-3000 feet

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: BRT-Tis programmable, timing advanced over majority of range compared to stock. Bike runs good through all throttle positions. Runs best at WOT from 9k-12krpms Bike feels lean at 1/4 -1/2 throttle positions all through lower rev range. will shim needles soon.

Bike feels good up top with the 108 at WOT, I feel the power drops off more than with the 110 mains past 12k rpms which kind of makes sense, but I feel like the bike spins up quicker from 9k to 12k. Will run the 108 for a while before I make a final decision. After I shim the needles the bike will probably feel a good bit better everywhere.
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Last futzed with by subxero; August 4th, 2014 at 07:21 AM.
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Old August 1st, 2014, 08:40 PM   #118
higear223
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Name: Greg
Location: Somerville TN
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Motorcycle(s): 08 Ninja 250, 09 650 V-Strom, 07 CRF230F

Posts: 42
YEAR:2008

INTAKE MODIFICATIONS: air box pulled K&N 0990 kleen air removed

EXHAUST MODIFICATIONS: Area P 12" stainless

JET KIT OR STOCK? jet kit

BRAND OF JET KIT? Dynojet

MAIN JET: 108

NEEDLE AND CLIP POSITION: 3rd

MIXTURE SCREW SETTINGS: 3 to 4 turns out

ELEVATION:400 ft

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP:
Idles well, takes throttle well from idle, pulls well to redline. Plugs show a little lean mixture. What kind of top speed should I expect from this setup?


Edit: Changed clip to 4th position. Got rid of some surging around 10k.
Tops out at 95 Indicated.

Last futzed with by higear223; August 3rd, 2014 at 01:17 PM. Reason: Changed clip to 4th position
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Old August 3rd, 2014, 09:03 PM   #119
assripp3r
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Name: Canada
Location: canada
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Motorcycle(s): 250

Posts: 18
YEAR: 2009 ninja 250r

INTAKE MODIFICATIONS:no Airbox; K&N Air Filter 0990; Crank case breather, other k&n filter and we only kept rubber velocity stacks, the rest of the airbox is garbage.

EXHAUST MODIFICATIONS: yoshimura full exhaust

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Dynojet stage 3

MAIN JET: 116

NEEDLE AND CLIP POSITION: stock

MIXTURE SCREW SETTINGS: 2 1/2 turns out

ELEVATION: 0-1000

MISCELLANEOUS INFORMATION ABOUT YOUR BIKE’S JETTING SETUP: pretty much a better improvement with dj116 and dsp031. I kept the parts that look like velocity stacks attached. I received better improvement with leaving rubber velocity stacks on.
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Old August 4th, 2014, 05:25 AM   #120
ForceofWill
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Name: Tom
Location: Chesapeake, VA
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Motorcycle(s): 2008 250R, 02 FZ1, 07 RSV1k Factory

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Just realized I never posted in here.

YEAR: 2008 ninja 250r

INTAKE MODIFICATIONS:no Airbox; K&N Air Filter 0990; Crank case breather, Kleen delete.

EXHAUST MODIFICATIONS: Area P 18" Race

JET KIT OR STOCK? Jet Kit

BRAND OF JET KIT? Dynojet stage 3

MAIN JET: 108

NEEDLE AND CLIP POSITION: 3rd notch

MIXTURE SCREW SETTINGS: 2.8 turns out

ELEVATION: Sea Level
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