Snorkel / Intake Mod for Ninja 250R
User KKim over @ KawiForums.com did a real nice picture walk through of removing the intake snorkel on the 250. So far users have reported that it gives the bike a nice growl, and makes the low end power delivery smooth out a tad.
Granted this can be accomplished on a stock bike, but you might want to look into the DynaJet jet kit which comes with a set of needles just for modified air boxes.
If anyone has any Dyno Charts w/ AFR’s after doing this mod, please leave a comment. Inquiring minds want to know how this can affect a stock bike.
Picture Walk-thru after the Jump:
[Photos Credit: KKim @ Kawiforums]
DynoJet Ninja 250R Jet Kit | Kawasaki 250R Parts, Reviews, and Information Said,
April 11, 2008 @ 12:35 pm
[…] rumored that the 250R runs a little lean down low in the stock form. Once people start to pull airboxes or start adding exhausts to the mix you start to run the risk of really leaning out your engine […]
kkim Said,
April 12, 2008 @ 9:53 pm
to be clear… my bike had shims under the stock needles to richen the mixture in the low-mid range. my recommendation would be to shim first, then remove the snorkel.
I totally agree that removing the snorkel will result in a leaner mixture. Remove at your own risk.
The good thing about this mod is that if you feel it is too lean, just reinsert it and all is back to stock.
[Reply]
Reddoak Said,
June 3, 2008 @ 3:07 pm
Removed the Snorkus, took about 3 minutes. Just yank it right out, easy as pie. Not much noticable difference in sound, I’ve got a 2 Bros. slip on that pretty much drowns it out. Not much noticable gain on power either.
I pulled the bike apart today and shimmed the needle in the carbs with 2 washers. Better power down low. You aren’t going to win the drag race with the SRT-4 yet (backwards in a school zone, no less) but it feels a bit less hesitant from off idle, and builds power faster in the lower ranges. Took about an hour and a half or so, but it could be done quicker if you already know how to pull the fairings and tank off.
Worth doing, IMHO
[Reply]
Joe Reply:
April 11th, 2009 at 2:09 pm
I shimmed my needles with two #3 washers,wow what a difference on my bike.
[Reply]
joe Said,
April 18, 2009 @ 10:41 am
Joe you mean two 3mm washers for each carb right?
I believe #4 standard works as good because it is almost the same size as 3mm.
[Reply]
joe Reply:
April 22nd, 2009 at 7:40 am
Yes, two #3 washers for each carb. I bought both but the #4 washers were just to big. Any local hobbie shop should have them.
[Reply]
tony strong Said,
April 23, 2009 @ 10:36 am
Those shims , both together are 1 mm thick. so you are raising your needle 1mm.
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Joe Reply:
April 24th, 2009 at 6:13 pm
The washers i bought were about 48 to 50 thousands thick, Thats for two washers together. I had the guy in the hobbie shop mic them till he got 4 of them the same.If you haven’t done it and your bike is running like mine was, just do it.Oh by the way use a long #2 driver on the screws.
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todd Said,
September 7, 2009 @ 9:35 pm
have a stupid question (not to mechincal) new owner of a 2009 250 ninja. after you take out the snorkel do you put the air filter back in
[Reply]
Robert Said,
September 8, 2009 @ 8:04 pm
Yes, definitely put the airfilter back in. you would never want to run any engine without an airfilter. If any little crap gets sucked in there, it could pit your valves or pistons, or cause worse damage.
[Reply]
D Fazz Said,
October 1, 2009 @ 4:32 am
If the snorkel gets removed from a stock 09 kawasaki ninja 250r, it sounds more like a low-end mini harley-chopper bike.
[Reply]
D Fazz Said,
October 1, 2009 @ 4:35 am
I suggest do not remove the snorkel, cause its a BITCH to push back in…
[Reply]