Hi there!


I don't know nothing on the ninja engine but will it be possible?


EX-250-J Specifications[13]
Engine
Type 4-stroke Inline twin, DOHC, Liquid cooled, 8-Valve, with counterbalancer
Displacement 249 cc
Bore and Stroke 62.0 x 41.2 mm
Compression Ratio 11.6:1
Carburetion Keihin CVK30 (2), Constant velocity, diaphragm-type. Fuel injection for Europe and Thailand Euro/Thai model
Starting Electric
Ignition Electronic advance
Spark plug NGK CR8HSA, CR8HIX, CR8HVX
option CR7HSA, CR7HIX
Fuel type Min 91 Research / 87 avg. octane unleaded
Transmission

Performance[4]
0-60 mph (0-100 km/h) 7.72 sec
1/4 mile 15.58 s @ 81.98 mph (131.93 km/h)[4]
Maximum speed 95.5 mph (153.7 km/h)[4][14]
Maximum power 26.4 hp @ 11000 rpm (rear wheel)
32 PS (23.5 kW) (crank) [11]
Maximum torque 13.6 ft·lb (18.4 N·m) @ 9,750 rpm
Fuel capacity 4.8 US gal (18 L)
Fuel efficiency 61 mpg-US (3.9 L/100 km) (official)[15]
51.2 mpg-US (4.59 L/100 km)[4]


Thanks!

 

wow! thats a good one.
If you get it to work, Sure like to see the pic's

 

This has been asked before. From what I recall there's no way it could fit.

 

doubt it badly, but anything is possable with enough dough.

 

What is the advantage of the 2 cylinder 250 over the thumper 250? And is it enough of an advantage to even attempt?
Just axing.
Dan

 

If anything, I'd like to put a KLX450 motor into my 250! (Or even a KX250)

 

+1 on the KX250 motor

I'd guess that the 2 cylinder would rev higher to make the same HP, but develope less torque in the lower rpms...
Anyone wanna chime in here and let me know what the real answer is?

 

I've heard that the ninja 250's are wimpy... but that may have been slanted form a guy that is used to the 600 haahha

 

The Ninja motor makes about 29.5 hp, but is heavier than the stock motor. I don't think it would be worth the effort because the ninja motors power would be very dificult to use off road anyway. Get the big bore and pumper carb for your KLX and call it good.

 

my friend has a ninja and its not faster, the aust version of both. all the power is above 9500rpm, slow revving and less torque.