[dieselfrek]

Hello from the south! Im a new rider riding an 09 Ninja 250R blacked out with 6500 miles on it aftermarket wise it has a yoshi slip on, 2" lowering kit, fender eliminator, 150 tire on the rear instead of the stock 130, and lastly frame sliders. With the yoshi slip on should i rejet the carbs or leave them? Always open for suggestions on somethin i should do to my bike or modifications that the bike comes with that i should delete! Also my buddy has a 11 ninja 250r and his will run 85 mph at like 9500rpms stock with nuthin done to it mine will barely push 70 at 10,000rpms whats up with that?!

Always looking to get the most out of my bike!​

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[Felix]

Welcome!

Some things you could consider would be removing the air snorkal to allow more flow, jetting or shimming the needles. I've also wondered if changing the rear on this bikes will effect performance because of the increase in mass... just a thought.

Sometimes engines differ greatly out of the factory, I had an old car of mine dynoed and when it was completely stock, it was putting out MORE power than in the specs.

Where is the 'south'? How about some pics of your bike in the local area?

Felix

 

[dieselfrek]

Ok if you delete the snorkle is there any negativesif you do? Never thought about the mass of the rear tire either. Yea thanks for the suggestions and
Usa in the southern states, sure ill get some posted here in minute!
Thanks again!

 

[Felix]

Larger tyres look GREAT, couple more things;

1) Centripetal force
2) Weight
3) Friction

Also have you checked your tyre pressures?

Felix

 

[dieselfrek]

Yes they do makes the 250r ninja look like a bigger bike and yea. Could i change out sproket sizes on front and rear?

 

[Felix]

Yeah, changing the sprocket could 'increase the torque', all sprocket changes come at a cost, acceleration or top speed. You would be 'going through the gears' faster, and revving harder in top gear, but if most of your riding is below 60mph then go for it... if you sit on the motorway for 30mins a day, you'd go the other way and make the gears taller so that your revs are lower in top gear.

Really simple calculator.

Also when you changed the rear did it increase the overall diameter of the wheel?

Felix

 

[dieselfrek]

Ok and no you have to change the wheel if you go to a 160 or up. If i delete the snorkle on the airfilter is there any negatives on that? oh and got those pics of my bike up on my profile

 

[Felix]

I'd only do it if you are increasing fuel some how.

I had a full AreaP system, snorkal removed and shims on my ninja.

Felix

 

[spooph]

Hey Dieselfrek,

welcome to NN! Nice bike! Erm, you shouldn't have to rejet with just the yosh. With the snorkel removed as well, you'll want to have the bike dyno-jetted.

top speed - do you have the stock sprockets on the bike still? Or did you buy it used and maybe the previous owner swapped them out? Erm, 70 @ 10K in which gear? top gear (6th)?

 

[BlackBoar]

Welcome Dieselfrek. Excellent bike. Go Team Black!

 

[Navy Ninja]

welcome.

which southern state are you located in?

I'm in SC.

 

[dieselfrek]

I'd only do it if you are increasing fuel some how.

I had a full AreaP system, snorkal removed and shims on my ninja.

Felix

Ok thanks and It run better with the snorkel off and the shims? what was your top speed and at what rpm?

 

[dieselfrek]

Hey Dieselfrek,

welcome to NN! Nice bike! Erm, you shouldn't have to rejet with just the yosh. With the snorkel removed as well, you'll want to have the bike dyno-jetted.

top speed - do you have the stock sprockets on the bike still? Or did you buy it used and maybe the previous owner swapped them out? Erm, 70 @ 10K in which gear? top gear (6th)?

Thanks and ok im planning on deleten the snorkel so you suggest i dyno jet it? and im not sure the owner before me said he told me everything aftermarket that was on it or changed, and yes sir top gear and i was talkin to my friend today and he said he was doin 75 at 9000 rpm the other day? Thanks

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[dieselfrek]

Welcome Dieselfrek. Excellent bike. Go Team Black!

Thanks man! What are you ridin

 

[dieselfrek]

welcome.

which southern state are you located in?

I'm in SC.

Thanks and Oklahoma and really i have know some people that used to live there

 

[BlackBoar]

Thanks man! What are you ridin

2009 Kawasaki Versys. But, I put over 14,000km on a black '09 Ninja 250R and I loved that bike.

 

[dieselfrek]

Nice, and yea im very impressed with mine real comfortable good lookin bike. You have any mods on your old ninja that are beneficial to anything?

 

[BlackBoar]

No performance mods. A few cosmetic details, black fairing bolts, some decals, trimmed the reflector off the tail, rear spools for the stand, added a Hotbodies double bubble wind screen, and built a rack for a Givi topbox that locked down over the pillion.

 

[spooph]

Thanks and ok im planning on deleten the snorkel so you suggest i dyno jet it? and im not sure the owner before me said he told me everything aftermarket that was on it or changed, and yes sir top gear and i was talkin to my friend today and he said he was doin 75 at 9000 rpm the other day? Thanks

Yes, dyno jet it. That means, don't just buy the dyno jet kit and install it. Take it to a certified dynojet dealer where they can dyno-tune the bike, as in, where they decide which jets to use based on the results shown on the dynomometer....

built a rack for a Givi topbox that locked down over the pillion.

called the contraption and it is glorious! :thumb:

 

[Onslaught]

+1 Go Team Black !!!!