ninjette.org

Go Back   ninjette.org > 1986 - 2007 Ninja 250R > 1986 - 2007 Ninja 250R Tech Talk

Reply
 
Thread Tools
Old February 23rd, 2012, 07:01 AM   #1
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
UniFilters

I have a question on these. I have a set already for my cafe bike build on my GS, but would riding in the rain be an issue on the Ninja. I ride pretty much all summer rain or shine so just wanted to know if I do get into a heavy rain will it cause my bike problems or worse damage the bike. Thanks.
Zaydoc is offline   Reply With Quote




Old February 23rd, 2012, 09:24 AM   #2
Skippii
Milkshake Drinker
 
Skippii's Avatar
 
Name: Skippii
Location: Richmond, Va
Join Date: Aug 2011

Motorcycle(s): 2007 Orange DRZ400-S, 2005 Ninja 250 & Custom Thundercunt Dirt Chopper

Posts: A lot.
No, shouldn't have any problems. I RUN K&N on the 250 and UNI pods on my 500. Only issue I've ever had with them is that once, immediately after oiling them, I had to weld something on the bike's frame and they burst into flames. That's not their fault, though.
Posted via Mobile Device
Skippii is offline   Reply With Quote


Old February 23rd, 2012, 03:32 PM   #3
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
Thanks for the response. You guys are always so much help on here. Now time to build my exhaust and put the pods on; then re-jet. Yay fun lol.
Zaydoc is offline   Reply With Quote


Old February 23rd, 2012, 03:43 PM   #4
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
What are the plans for the exhaust?

Jetting is lots of fun. Just think of it as a mental challenge/puzzle
choneofakind is offline   Reply With Quote


Old February 23rd, 2012, 04:11 PM   #5
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
For the exhaust I'm just going to make a 2-1 header with a new mid pipe and muffler. Thinking of going with Dan-Moto just not sure which one. Muzzy is just to much money and Area-P is not making them anymore.
Zaydoc is offline   Reply With Quote


Old February 23rd, 2012, 04:22 PM   #6
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
you might be better off to get 2 DanMoto cans and make custom mid-pipes to connect them to the headers.

Unless you step up the pipe diameter to accommodate for both pipes flowing into 1, it might actually harm performance.

Either way, Pictures once the pipes are done
choneofakind is offline   Reply With Quote


Old February 23rd, 2012, 04:28 PM   #7
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
Yeah I was going to step up to 1 3/4" mid pipe. I'll post pictures as soon as I get this project underway.
Zaydoc is offline   Reply With Quote


Old February 23rd, 2012, 04:43 PM   #8
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
Well then by all means make it and see how it goes. I would do something like that if I had the welding skills.
choneofakind is offline   Reply With Quote


Old February 23rd, 2012, 04:46 PM   #9
alex.s
wat
 
alex.s's Avatar
 
Name: wat
Location: tustin/long beach
Join Date: Sep 2009

Motorcycle(s): wat

Posts: Too much.
Blog Entries: 5
MOTM - Oct '12, Feb '14
Quote:
Originally Posted by Skippii View Post
immediately after oiling them, I had to weld something on the bike's frame and they burst into flames. That's not their fault, though.
hahahahahahaha its funny because i've done that so many times. never with an air filter though, i usually have the engine and electrical out when im welding on stuff
__________________________________________________
alex.s is offline   Reply With Quote


Old March 10th, 2012, 07:02 PM   #10
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
Header and UniFilters

So today I got sometime and worked on the bike. I built a 2-1 header merged into a 1 1/2" pipe. Still need to dress up the welds some more. Also installed the Uni-Filters. Now I do have a question? The previous owner had install a K&N filter into the stock air box and jetted it with what looks to be a DynoJet kit. The needles are on the 4 clip and it has 110 jets (no DJ markings), also 3.5 turns out. What do you guys think would be a good starting point for the set up I now have.
Attached Images
File Type: jpg 2012-03-10_20-23-35_995.jpg (75.3 KB, 22 views)
File Type: jpg 2012-03-10_20-23-53_432.jpg (83.4 KB, 24 views)
File Type: jpg 2012-03-10_20-45-27_77.jpg (74.6 KB, 13 views)
File Type: jpg 2012-03-10_20-45-40_470.jpg (88.3 KB, 13 views)
Zaydoc is offline   Reply With Quote


Old March 10th, 2012, 08:40 PM   #11
Skippii
Milkshake Drinker
 
Skippii's Avatar
 
Name: Skippii
Location: Richmond, Va
Join Date: Aug 2011

Motorcycle(s): 2007 Orange DRZ400-S, 2005 Ninja 250 & Custom Thundercunt Dirt Chopper

Posts: A lot.
Quote:
Originally Posted by Zaydoc View Post
So today I got sometime and worked on the bike. I built a 2-1 header merged into a 1 1/2" pipe. Still need to dress up the welds some more. Also installed the Uni-Filters. Now I do have a question? The previous owner had install a K&N filter into the stock air box and jetted it with what looks to be a DynoJet kit. The needles are on the 4 clip and it has 110 jets (no DJ markings), also 3.5 turns out. What do you guys think would be a good starting point for the set up I now have.
I've got K&N pods on my bike with a homemade 2-into-1 exhaust similar to yours. I run 110 main jets and have the needles slightly shimmed. Your setup should be pretty close as it is. UNI pods don't flow quite as much as the K&Ns I believe, so 108 main jets might be best for the top end.
__________________________________________________
"What a sweetheart."- ninja_sleeper to me
Skippii is offline   Reply With Quote


Old March 10th, 2012, 09:14 PM   #12
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
Thanks for the quick reply and info. I'll give it try. So far I love the sound.
Zaydoc is offline   Reply With Quote


Old March 10th, 2012, 09:24 PM   #13
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
Start at a Keihin 108, and also test a 110, and 112.

http://www.factorypro.com/tech_tunin...m_engines.html

I'm interested in that header you fabbed up. I see a DanMoto slipon Any feedback on how freakin loud it is compared to Two Brothers slip-ons? Does it clear the fairing? Does it provide actual performance improvement?
choneofakind is offline   Reply With Quote


Old March 11th, 2012, 03:53 PM   #14
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
To answer your questions choneofakind sound is really deep I have the baffle in, it does clear the faring now I could have done better with more equipment. As for power I'm not sure right now I'm trying to get rid of an exhaust leak. Oh and I've also installed an R6 throttle tube and can't wait to try it out.
Zaydoc is offline   Reply With Quote


Old March 13th, 2012, 01:10 AM   #15
CynicalC
ninjette.org certified postwhore
 
CynicalC's Avatar
 
Name: Colin
Location: Bay Area
Join Date: Feb 2011

Motorcycle(s): '96 EX250

Posts: A lot.
Are the slides drilled?
__________________________________________________
Ç¥ñ頻| ßÿ Ñâ7µ®é. Äñt¡~§º¢Ïä| ßý Çhøî©è.
CynicalC is offline   Reply With Quote


Old March 13th, 2012, 03:02 AM   #16
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
Yes the slides are drilled and the 110 is a DJ jet so I've ordered 108,110,112 factory main jets. I have everything done now other than getting to ride it and work on the jetting. At idle it seems to rich but I'll work that once I can get the main corrected.
Zaydoc is offline   Reply With Quote


Old March 13th, 2012, 08:35 AM   #17
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
with the slides drilled, how does it feel if you cruise right at 6k? that's where I had problems when I drilled my slides with a #70 bit.

I have a hypothesis that it was because I didn't shim my needles far enough out, but at the time, I decided to just seal the holes back up with silicon. I'm still debating clearing the silicon out of the #70 holes and testing out different needle heights because the throttle response was excellent with the slides drilled, it just sputtered if I cruised right at 6k
choneofakind is offline   Reply With Quote


Old March 13th, 2012, 12:27 PM   #18
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
The throttle response is good. Pulls to red line now it never would before with out cutting out. Now it pulls to redline just not hard kinda flat feeling. At cruise it does have that sputter sound and feeling. The previous owner drilled the main air hole in the slide and I'm not sure of the factory size. I like the way it sounds the intake seems a little louder than the exhaust lol. Any tunning feedback would be great. I've also ordered 108-112 oem jets to replace the DJ110 in there now and see if that help me get the jetting down. Thanks J.
Zaydoc is offline   Reply With Quote


Old March 13th, 2012, 12:31 PM   #19
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
Follow the instructions in the Link to factorypro's site that I linked earlier. That will get your jetting right. Pulling the carbs on your bike should be really easy since you don't have an airbox
choneofakind is offline   Reply With Quote


Old March 13th, 2012, 12:38 PM   #20
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
Quote:
Originally Posted by Skippii View Post
108 main jets might be best for the top end.
I'm betting on 110's for his setup. I cut open my intake lid, and am running slip-ons without the baffles and am running 108's with 3 washers (I'll be testing a 4th)

I always assumed that pod filters would flow more than an opened up intake lid and a new air filter.
choneofakind is offline   Reply With Quote


Old March 13th, 2012, 03:26 PM   #21
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
Oh that they do. I'm not sure what clip I was on I for got but I think it was 4th I'll have to check.
Posted via Mobile Device
Zaydoc is offline   Reply With Quote


Old March 18th, 2012, 07:50 AM   #22
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
Any updates on your exhaust leak?
choneofakind is offline   Reply With Quote


Old March 18th, 2012, 09:59 AM   #23
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
Exhaust is all good and man it sounds good. A little loud but not anymore than the bigger bikes. It's alot deeper tone. Today I'm pulling the carbs again and putting the 112's in along with moving the needle up to 3. Oh and a valve adjustment.
Zaydoc is offline   Reply With Quote


Old March 18th, 2012, 10:38 AM   #24
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
sounds like a good day

Only thing you might consider with that exhaust is making the mid-pipe separate from the header and connecting it with some spring clamps, because if you ever do the uni-trak linkage service, you have to remove the pipe to get at the bolt on the linkage. It would be easier to just remove the can and mid-pipe than the whole header.

I'm jealous of your welding abilities. I love the look and weight reduction of the 2-1 headers.

Wanna make another????
choneofakind is offline   Reply With Quote


Old March 18th, 2012, 03:16 PM   #25
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
UpDate

Well all done for now. Filters are installed and oiled. Exhaust is all finished, painted and done. Jetting is done for now will have to replace the PJ #38 with PJ #40 as I'm still getting a small amount of surging and stuttering but very little. Mixture screws opened to 4 turns hope they don't fall out but should be good for a few weeks till I can get the new pilot jets. Rims polished and cleaned. Chain cleaned and lubed. Removed side decals. Not to bad for a weekends work.

YEAR: 2004

INTAKE MODIFICATIONS: Uni 6" double filters

EXHAUST MODIFICATIONS: Custom 2-1 with Danmoto Carbon slip on from 08 Ninja 250

JET KIT OR STOCK? Kit

BRAND OF JET KIT? DJ and OEM

MAIN JET: 112

NEEDLE AND CLIP POSITION: DJ #5 clip

MIXTURE SCREW SETTINGS: 4

ELEVATION: N/A
Attached Images
File Type: jpg 2012-03-18_17-53-29_824.jpg (106.1 KB, 15 views)
File Type: jpg 2012-03-18_17-54-06_996.jpg (89.5 KB, 11 views)
File Type: jpg 2012-03-18_17-53-52_687.jpg (73.4 KB, 11 views)
Zaydoc is offline   Reply With Quote


Old March 18th, 2012, 06:43 PM   #26
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
looks really slick! I like the polished rims with the silver and blue paint

questions about your jetting. How did you test the pilot jets? did you make sure the engine was hot before you played with them?

Also, is the 5th needle position the one that has the needles as high as possible or as low as possible?
choneofakind is offline   Reply With Quote


Old March 18th, 2012, 08:16 PM   #27
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
I have one more clip space I could go it looks like but yes it 5 down from the top. As for the pilot jet yes it was up to temp and the surging is at cruise right where the pilot jet works. Also I can get the bike to idle just fine with it at 2.5 turns but anything past 3k and it will kill the bike. If I can get it past that and work the throttle once the main jet starts to take over it will rev up it just that mid range area. So a #40 pilot jet should increase the fuel richness at that point and allow me to back the mixture screws back in. From what I know once you hit about 4 turns you should go up a size on the PJ. As for the needle I was hoping that the 112's would have allowed me to lower the needle a clip or two but the bike likes it at 5 lol.
Choneofakind the extra clip might be because of the slides being drilled but it does help so you might give that a try. The throttle response is great I can hit WOT without taking an extra grip and the bike is alot easier to control with the throttle.
Zaydoc is offline   Reply With Quote


Old March 18th, 2012, 08:18 PM   #28
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
Oh and the belly pan is undercoating lol I was tired of the nicks and scrapes from the road.
Zaydoc is offline   Reply With Quote


Old March 19th, 2012, 09:13 AM   #29
CmichRider
ninjette.org member
 
CmichRider's Avatar
 
Name: Jacob
Location: Michigan
Join Date: Mar 2011

Motorcycle(s): 2000 Ninja 250

Posts: 227
Quick question here...is there any benefit to going with the UniFilters instead of the K&N single pod filter?
CmichRider is offline   Reply With Quote


Old March 19th, 2012, 09:53 AM   #30
Zaydoc
ninjette.org member
 
Name: Jason
Location: Fort Drum, NY
Join Date: Aug 2011

Motorcycle(s): 2004 Ninja 250R

Posts: 46
I think they filter better and I had them from another project.
Posted via Mobile Device
Zaydoc is offline   Reply With Quote


Reply






Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Motorcycle Safety Foundation

All times are GMT -7. The time now is 06:48 PM.


Website uptime monitoring Host-tracker.com
Powered by vBulletin®
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Except where otherwise noted, all site contents are © Copyright 2022 ninjette.org, All rights reserved.