Kawasaki Ninja Forum banner
1 - 7 of 7 Posts

·
Registered
Joined
·
31 Posts
Discussion Starter · #1 ·
the low rpms are fine but when I hit the high rpms it feels like nothing is happening. I hate to downshift because it feels like im putting to much strain on the engine. I currently have 2 washers, the snorkel removed, and a shorty exhaust. do u guys think I should another washer or remove one? or maybe put the snorkel back in? 8) 8)
 

·
Registered
Joined
·
5,695 Posts
I would say after 2 washers aren't good enough, it's time to move up a size in jets.... The reason you're finding top end isn't so good, is because the needle shims are meant to be a low-end fix.... They allow more fuel in when the throttle is almost fully closed (low end), but have a negligible effect on top end.... You need a bigger jet to be able to dump more gas in when the throttle is wide open. I would suggest rejetting one size bigger. Test it, and if it's bogging on the low end, add ONE shim.... If it's still no good, then add the second washer. But, keep in mind, since you're rejetting, you won't need as much shimming as you do now...

Also keep in mind, with the snorkel removed, and a shorty exhaust, your engine is breathing better, on the inhale and exhale side. This means you can dump in more fuel. That's why I said what I said above. Hope this helps.

By the way, does anybody else's Firefox know how to spell rejetting?
 

·
Registered
Joined
·
267 Posts
basically it like changing out those needles in the carbs...most of the work is the same as what you did to shim the needles up some to allow more fuel at idle, but rejetting will effect more of the power band.
 

·
Registered
Joined
·
94 Posts
buy this kit: http://cgi.ebay.com/ebaymotors/_Motorcycle-Parts-Accessories__DYNOJET-STAGE-2-JET-KIT-KAWASAKI-NINJA-250R-250-2008-08_W0QQitemZ270323059909QQadiZ2863QQadnZMotorcycleQ20PartsQ20Q26Q20AccessoriesQQcmdZViewItemQQptZMotorcycles_Parts_Accessories?hash=item270323059909&_trksid=p4506.c0.m245&_trkparms=72%3A543|65%3A12|39%3A1|240%3A1318 its a good deal, you will want to find a shop to install, preferably one that can dyno it too to tune it.
 

·
Registered
Joined
·
5,695 Posts
sorry to disagree with you phillip, but Eninja, you can buy a jet for about $3.00 (you need 2 = $6) at your local shop... Let me do some research in the manual tomorrow, and I will try and give you specific instructions on how to do this....

By the way, if you haven't spent the $60 on the FACTORY maintenance manual yet, please do so. You're gonna save time, money and a whole lot of stoopid comments from people getting impatient with you.
 
1 - 7 of 7 Posts
Top