07 ninja 250 stage 3 re-jet? - Kawasaki Ninja 250R Forum
 
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post #1 of 6 (permalink) Old 02-16-2013, 03:20 PM Thread Starter
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07 ninja 250 stage 3 re-jet?

So at the end of last season i tore out my stock airbox and mounted K&N filters directly to my carbs. I knew this was going to be a problem with my jets, especially since earlier in the season i put on the yoshi rs-3 slip-on. So obviously i took it for a quick spin after putting on the filters and as i expected it was bogging down and not running great. So i just winterized the bike figuring i'd deal with it next season but now the time has come, in prep for the upcoming season, i need to find a jet kit and im just looking for a little feedback. Based on what i've read im going to need a stage 3 jet kit, which i can get through dynojets but it says that it could "compromise driveability". Has anyone out there put the dynojets stage 3 jet kit in their 250? and did you notice any "compromised driveability"? Is there any other jet kit anyone would recommend? Any help would be appreciated.
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post #2 of 6 (permalink) Old 03-31-2013, 07:27 PM Thread Starter
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Ended up getting the DynoJet kit. Going to install this week and post results hopefully by next week
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post #3 of 6 (permalink) Old 04-04-2013, 05:25 PM
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I put stage 3 in mine. Removed air box and baffle out mufflers when I bought it. Installed pods and it sputtered. Found it had a 105 main jet in it so I just got a 110 and two shims. It ran great till I tried to go over 75. I removed shims and it running better but I think it needs a 108 and I will start shimming from there. Found a good article the will help with getting you close to your main jet size. I have time till the weather is stable. Keep me posted on how it goes. Send you some articles when I find them.

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post #4 of 6 (permalink) Old 04-04-2013, 05:32 PM
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Quote:
Originally Posted by ronnrs View Post
I put stage 3 in mine. Removed air box and baffle out mufflers when I bought it. Installed pods and it sputtered. Found it had a 105 main jet in it so I just got a 110 and two shims. It ran great till I tried to go over 75. I removed shims and it running better but I think it needs a 108 and I will start shimming from there. Found a good article the will help with getting you close to your main jet size. I have time till the weather is stable. Keep me posted on how it goes. Send you some articles when I find them.
http://faq.ninja250.org/index.php?ti...edit&redlink=1
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post #5 of 6 (permalink) Old 04-05-2013, 05:42 AM Thread Starter
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Great article, thanks! Wish I saw it a week ago though haha I installed the dynojet stage 3, the article says to go with factory pro jets. I also drilled the slides, which dynojet says to do, but the article says not to and now I have issues with bogging. Apparently the dynojet kit is meant for full race where the slides would be wide open most of the time. When i first started the bike after the re-jet it would idle fine with choke and then dip low as soon i took the choke off. I went a 1/2 turn richer on the adjustment screws an now the bike fires up and idles great, even as i shift into gear an take off it still runs great but the second I really give it some gas it bogs right out. I want to adjust the needle height some what and see if that helps. If that wont make a difference then i was thinking about goin down to the 110 main jet (dynojet kit was stage 1 and 3 so i have smaller jets). It has a 114 in now which dynojet says to do. Going to get into it some more tommorow when I have time, i'll let you know what happens
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post #6 of 6 (permalink) Old 04-05-2013, 08:33 AM
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I drilled out my hole and then read up so I did the same thing. I used weed eater sting and a propane torch. Heated up string and tapped onto hole and it filled it right up then drilled hole through weed eater string. Worked great for me. I'm putting in 108 today and see how it does.

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