December 24th, 2008, 07:00 AM | #1 | |
ninjette.org member
Name: Brahmantio
Location: Jakarta
Join Date: Dec 2008 Motorcycle(s): N250R Posts: 101
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Jetting Database - Discussion Thread
Quote:
I suggest you try putting back the needle on 3rd position and slip a shim under it-4th position is a bit to rich Also if you can advanced your timing by 4 degrees , your bike will be moree responsive on the low end, and your bike is gonna pullll all the way to redline, your power curve will move to the right until limiter kicks in. Great!! try it |
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December 24th, 2008, 02:35 PM | #2 | |
Join Date: Nov 2008 Posts: Too much.
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Quote:
4 degrees ignition timing or cam timing? |
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December 24th, 2008, 02:45 PM | #3 | |
IC2(SW)
Name: Kerry
Location: Pensacola
Join Date: Nov 2008 Motorcycle(s): . Posts: A lot.
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Quote:
---------------------------------------------------- Alex to the rescue: http://www.ninjette.org/forums/showthread.php?t=10208 |
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December 24th, 2008, 03:04 PM | #4 |
Join Date: Nov 2008 Posts: Too much.
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December 24th, 2008, 04:24 PM | #5 |
That's me!
Name: TJ
Location: Ames, IA
Join Date: Nov 2008 Motorcycle(s): 2008 Ninja 250r (Tis blue), 2008 CBR600RR Posts: 454
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Here's what Factory Pro says about an ignition advancer for the 250's:
"Ignition Advance Kit - NOT for 250! But, if we did make a specific 250 kit, it would make more lowend and midrange - We do NOT NOT NOT NOT (not!) make an ignition advance kit for the ex250! NOT! No! BUT!!!! The ex250 uses a large, 3 bolt flywheel puller that only a dealer would have. The woodruff key from the RTR-KAW-5-05 is the same key that fits the 250..... If you buy the RTR-KAW-5-05 kit, you can use the supplied woodruff key and the installation instructions for the ex500...... and you'll have a nice ex500 flywheel puller tool, too! NO. You can't buy the key without the puller, I know you can't use the puller - but - as I said, I don't make a 250 kit......" |
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December 24th, 2008, 05:51 PM | #6 |
ninjette.org member
Name: Brahmantio
Location: Jakarta
Join Date: Dec 2008 Motorcycle(s): N250R Posts: 101
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4 degrees ignition timing.the mod won't increase top end power,but definitely acceleration and low end response. we make our own puller
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December 24th, 2008, 05:55 PM | #7 |
Join Date: Nov 2008 Posts: Too much.
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is this just a matter of removing the flywheel , loosening the base plate and rotating it or is there a part involved?
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December 24th, 2008, 06:20 PM | #8 |
ninjette.org member
Name: Brahmantio
Location: Jakarta
Join Date: Dec 2008 Motorcycle(s): N250R Posts: 101
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yup, thats it! some recommends changing the front sprocket one tooth up to 15, I suggest leaving the front alone and drop 1 tooth from the back to 44 . That with advancing the timing really make the bike more fun to ride
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May 7th, 2009, 07:08 PM | #9 |
ninjette.org guru
Name: Tom
Location: Dayton, OH
Join Date: Jan 2009 Motorcycle(s): '13 Ninja 300 '09 Boulevard C50. '08 250r(TOTALED BY DEER) Posts: 467
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Any advice appreciated
I am new to wrenching on bikes.
I can't get my bike to run enough to even figure out the proper jetting. Last summer my 08 ran well with a full system Area P(standard can) . I didn't have the starting and mid range problems others experienced. Over the winter I removed the airbox/Kleen air tubing, added the K&N R-0990, drilled the slides with #70 bit, and installed small filter on top of the crankcase. I have tried many combinations with my Factory Pro kit. With all the combinations my bike only starts with full choke and has inconsistent rpms from 1k - 4K. Per the instructions, I wanted to start with top end, but even warmed up I can't get past 4k Even going back to stock jetting doesn't help. I have thoroughly cleaned and inspected the carbs since winter. I realize there are many, many, many variables...but is there something I am overlooking?
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May 7th, 2009, 07:17 PM | #10 |
Join Date: Nov 2008 Posts: Too much.
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what size are your main jets?
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May 7th, 2009, 07:19 PM | #11 |
ninjette.org guru
Name: Tom
Location: Dayton, OH
Join Date: Jan 2009 Motorcycle(s): '13 Ninja 300 '09 Boulevard C50. '08 250r(TOTALED BY DEER) Posts: 467
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I have tried Keihin 110, 112, 115 and stock 98s
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CHEERS!!! Last futzed with by Tigerpaw; May 9th, 2009 at 06:21 AM. |
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May 7th, 2009, 07:24 PM | #12 |
Join Date: Nov 2008 Posts: Too much.
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mains should be 110-112 Keihins with the separate filter setup, so you sound like you're okay there. What's the clip position? also, could you have torn a diaphragm?
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May 7th, 2009, 07:32 PM | #13 |
ninjette.org guru
Name: Tom
Location: Dayton, OH
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Diaphragms look good.
I have tried the e-clip at /2, /3, /4 with various shim combinations top/bottom. I also tried shimming stock needles with 98 mains to the same results.
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May 7th, 2009, 07:54 PM | #14 |
Join Date: Nov 2008 Posts: Too much.
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mixture screw settings?
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May 7th, 2009, 08:05 PM | #15 |
ninjette.org guru
Name: Tom
Location: Dayton, OH
Join Date: Jan 2009 Motorcycle(s): '13 Ninja 300 '09 Boulevard C50. '08 250r(TOTALED BY DEER) Posts: 467
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I always start at 2 or 2.5 turns out from tight,on both(with factory pro needles) and have probably gone from 1 to 5 in small even increments.
When you add shims above the e-clip, do you top it off with another e-clip to hold them down? I have tried new spark plugs, both sets looked dark/oily, but I have been doing so much starting/dying with choke.... I have tried restricting the K&N with masking tape....and tried without any filter ????????????????????????????
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May 7th, 2009, 08:15 PM | #16 |
250Arrrgh!
Name: Andrew
Location: San Francisco
Join Date: Jan 2009 Motorcycle(s): 2009 250R, 2001 996 Posts: 143
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My Dynojet kit came with only 2 clips total, so apparently it's not necessary to stick another one on top. Although I can understand why Kelly put extra ones on top of his needles, and if I had 2 extra clips I would probably do the same even though I already sleep well at night as is.
The white plastic retainer + the spring are probably enough to hold it all in place but with another clip to top it all off, you know 100% that nothing will be coming apart in there. |
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May 7th, 2009, 08:34 PM | #17 |
ninjette.org guru
Name: Tom
Location: Dayton, OH
Join Date: Jan 2009 Motorcycle(s): '13 Ninja 300 '09 Boulevard C50. '08 250r(TOTALED BY DEER) Posts: 467
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I agree Lurk, but I am starting to second guess/question everything.
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July 14th, 2009, 10:10 PM | #18 |
Join Date: Nov 2008 Posts: Too much.
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July 14th, 2009, 10:47 PM | #19 |
ninjette.org member
Name: Brahmantio
Location: Jakarta
Join Date: Dec 2008 Motorcycle(s): N250R Posts: 101
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July 14th, 2009, 10:58 PM | #20 |
ninjette.org member
Name: Chris
Location: Georgia
Join Date: May 2009 Motorcycle(s): 09 ninja 250(red) Posts: 193
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Are you asking a question or making a statement? Because I think Kkim Bump because he wanted to help out other poeple.
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July 14th, 2009, 11:31 PM | #21 |
Join Date: Nov 2008 Posts: Too much.
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Chris,
I think Brahmantio was responding to Tigerpaw's problem... I hope so, as I'm stumped as to what his problem is/was. |
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July 16th, 2009, 03:23 AM | #22 |
ninjette.org member
Name: Brahmantio
Location: Jakarta
Join Date: Dec 2008 Motorcycle(s): N250R Posts: 101
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yes Im addressing to tigerpaws problem .
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August 30th, 2009, 12:18 PM | #23 |
ninjette.org member
Name: Rigo
Location: Pharr, Tx
Join Date: Jun 2009 Motorcycle(s): 2008 Ninja 250R Candy Plasma Blue Posts: 72
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alright guys i need some help....
tomorrow my sportisi vr full exhaust and brt tis ignition setup will arrive... now im in need of a jet kit to be able to install my new goodies.... please point me into the right direction.....i plan on keeping the air box but removing the snorkel for now maybe after ill do the air box delete but not now... thanks guys!.. |
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August 30th, 2009, 01:28 PM | #24 |
self wrencher
Name: john
Location: houston
Join Date: Dec 2008 Motorcycle(s): 08 250r and 07 600r Posts: A lot.
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^^ if you're going to pull the carb out, might as well pull the airbox now...save you tons of time removing stuffs...also give you tons of room to tune.
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August 30th, 2009, 01:35 PM | #25 |
sir posts a lot
Name: michael
Location: HI
Join Date: Jul 2009 Motorcycle(s): '09 Black 250R Posts: 267
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I am having the same problem. My V6R exhaust will be done getting powdercoated on tues and I am with out a jet kit yet. I am thinking the Factory Pro kit will be my decision. After reading this thread it is a bit daunting to say the least
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August 30th, 2009, 02:02 PM | #26 |
The Sportisi Master
Name: Matt
Location: Chico
Join Date: May 2009 Motorcycle(s): 2008 Ninja 250 Posts: A lot.
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I always say DJ if your just doing the exhaust and stopping. Factory pro if you plan on other mods and there is more in their kit anyways plus you can get their complete kit with air filters. If all else fails get dj then when you mod more down the road go to www.jetsrus.com for new main jets.
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August 30th, 2009, 03:31 PM | #27 | |
ninjette.org member
Name: Rigo
Location: Pharr, Tx
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Quote:
but im low on cash...andi plan on leaving like taht for a while...will the dj stage 2 yield me the 14000 rpm rev limit? |
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August 30th, 2009, 03:35 PM | #28 |
self wrencher
Name: john
Location: houston
Join Date: Dec 2008 Motorcycle(s): 08 250r and 07 600r Posts: A lot.
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Rigo, pulling out airbox is free
btw, check your PM yoo!!! |
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August 30th, 2009, 03:42 PM | #29 |
ninjette.org member
Name: Rigo
Location: Pharr, Tx
Join Date: Jun 2009 Motorcycle(s): 2008 Ninja 250R Candy Plasma Blue Posts: 72
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August 30th, 2009, 04:12 PM | #30 |
The Sportisi Master
Name: Matt
Location: Chico
Join Date: May 2009 Motorcycle(s): 2008 Ninja 250 Posts: A lot.
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Rigo I never use a 100 main wih te tis so I can't give you an honest answer. You will know if you flat line at 12500 if you need a size bigger.
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August 30th, 2009, 06:49 PM | #31 |
ninjette.org member
Name: Rigo
Location: Pharr, Tx
Join Date: Jun 2009 Motorcycle(s): 2008 Ninja 250R Candy Plasma Blue Posts: 72
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ok..if i get the stage 2 kit and purchase the 112 main jet....well its still cheaper than the factory pro ...so i can do that right?
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August 30th, 2009, 09:56 PM | #32 |
The Sportisi Master
Name: Matt
Location: Chico
Join Date: May 2009 Motorcycle(s): 2008 Ninja 250 Posts: A lot.
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yup when it is neeed. I would move to a 40 pilot jet first. Then the 112's when you get a pod filter
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September 8th, 2009, 05:16 PM | #33 |
ninjette.org certified postwhore
Name: Paul
Location: Roanoke, VA
Join Date: Jun 2009 Motorcycle(s): 2008 Candy Plasma Blue 250R Posts: A lot.
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Do you recommend switching up to a #40 pilot screw when pulling the airbox? I know FP adds them in their kits (or at least the stage 1 kit, haven't seen an inventory of the stage 3), but I've got a DJ.
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September 8th, 2009, 05:20 PM | #34 |
Join Date: Nov 2008 Posts: Too much.
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Paul,
I read your comments in the jetting database. Try raising the needle one notch (4th from the top) to lean out the midrange to get the bike to pull harder. Too rich makes the bike go "flat"/bog. Welcome to the fun world of fine tuning your jetting. |
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September 16th, 2009, 08:57 AM | #35 |
ninjette.org newbie
Name: J
Location: seattle
Join Date: Jul 2009 Motorcycle(s): 09 250r Posts: 9
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my settings, for reference: http://www.ninjette.org/forums/showp...7&postcount=20
i'm pretty sure i've got a flat spot between 4-6k so some time in the next few days i'm going to drop another washer in there. i think i've also figured out my heat issues. i had some supicions that it was running a bit lean and i'm pretty sure i'm half right. it seems to be ok above 7-8k but below that it's a little weird. i didn't mess with the idle mix screws because i couldn't drill them off, i realized i was doing it wrong and should have used a screw intead of just trying to drill them out. so i'm thinking that it's heating up a bit when i stop because it's lean at idle, and it's a bit hot and funny in the mid because it needs another washer or two. i guess i underestimated how much air removing the snorkle sends through the box. |
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September 16th, 2009, 09:13 AM | #36 |
Join Date: Nov 2008 Posts: Too much.
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I would recommend going back to the 98s and raise the needles with another washer or 2.
These bikes are a bit rich in the main stock and lean in the idle and midrange. removing the snorkel gets the top end about right and raising the needle w/ at least 2 washers compensates for the lean condition in the lower rev range. |
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September 16th, 2009, 09:41 AM | #37 |
ninjette.org newbie
Name: J
Location: seattle
Join Date: Jul 2009 Motorcycle(s): 09 250r Posts: 9
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if it's a tiny bit rich in the top i'm ok with that. i don't feel any bogs or hesitation when ripping from 7-12k. freeway onramp at 40-50mph in 4th gear then WOT to get up to speed feels GREAT, so i think for now i'm going to leave the jet alone. if the 100 was too much i'd feel some bog opening it up like that, no?
washers are definitely going in tonight or tomorrow though. i also managed to find a offset screwdriver at Harbor Freight since the Milwaukee one was impossible to find local, so i think i'll fuss with the idle screws as well. if i don't get to it tonight, i probably won't be able to until next week as my folks are in town this weekend. i'll update once i get it done. ez |
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September 16th, 2009, 09:45 AM | #38 | |
Join Date: Nov 2008 Posts: Too much.
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Quote:
http://faq.ninja250.org/wiki/How_to_...e_your_jetting |
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September 26th, 2009, 08:43 PM | #39 |
ninjette.org newbie
Name: J
Location: seattle
Join Date: Jul 2009 Motorcycle(s): 09 250r Posts: 9
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finally got some time to put in another washer. so just to refresh
YEAR:2009 INTAKE MODIFICATIONS: no snorkle EXHAUST MODIFICATIONS: stock JET KIT OR STOCK? OEM jet BRAND OF JET KIT? OEM MAIN JET: keihin #100 NEEDLE AND CLIP POSITION: stock needle, two washers MIXTURE SCREW SETTINGS: stock ELEVATION: 0-500 it rips from 3k as far as i dared on the ride this evening. no hesitation at all.my idle dropped a little and i actually ended up setting it lower than i had it before, so i think my idle heating issue is done. warmed up at idle if i blip the throttle it drops right back down, no hanging like it used to. so i think this setup is good for my bike. now come spring i'm going to mess it all up and put an exhaust on |
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September 28th, 2009, 07:21 PM | #40 |
ninjette.org certified postwhore
Name: Wayan
Location: Bali - Indonesia
Join Date: Apr 2009 Motorcycle(s): 2014 Z250 Posts: A lot.
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YEAR:2008
INTAKE MODIFICATIONS: no snorkle (stock box & filter) EXHAUST MODIFICATIONS: CF AreaP 15" QC JET KIT OR STOCK? jet kit BRAND OF JET KIT? DynoJet stage 2 MAIN JET: #98 NEEDLE AND CLIP POSITION: e-clip #3 from top MIXTURE SCREW SETTINGS: umm.. mechanic did it, i think it was 4 turns? ELEVATION: 0-500 yesterday i managed to find a Dyno here in Bali thanks to Sportisi Indonesia! they charge $5 per run, so i'm hoping to get a chance to test out my bike soon. i went there yesterday after work, but it was already late, and they asked me to come back another day. they are also selling the BRT TIS (with remote) for about $250, including installation and tuning on the dyno, i might do that as my next mod. ill use the occasion to also test the bike with #100 main jets, and the e clips on a richer setting. to see if its possible to improve the bike any more on that front. will drop an update once i get some data from the dyno oh, and they told me that on average a stock 250, gets about 24.5 Hp, so I'm curious if its all in my head or if my bike has indeed improved since i did the mods with AreaP exhaust and the jet kit, and just how much I've gained. |
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