micoulisninja 250R mods presentation

[micoulisninja]

ok now, Jiggles' 250 is faster than mine (or so he claims...) but how about brakes, suspension and overall cornering performance ??

gonna give you a few ideas describing the mods I have already performed and the ones about to take place....
keep in mind, I own the european FI version...

Nickname
Black mamba

Engine
-modified airbox and ramair fresh air intake my make and design
-yamaha fazer 600 s1 middle air trumpets
-removed second butterflies
-slightly ported intake
-reprofiled intake cam with different timing and adjustable sprockets, my design
-ngk cr8eix iridium spark plugs
-base cr 12.4:1
-american version yoshimura headers and handmade muffler, my design

Management
-reflashed ecu with rev extension to 14k rpm (14.9k on tacho) and ignition curve set to +3 to +4 set on the dyno
-pc V with autotune link for fuel management
-switch for manual cooling fan engagement

Final drive
-13/43 sprockets (renthal ha rear) and afam xs ring chain with 104 links
-shifter my make and design

Handling
-adjustable race rear sets, my design
-honda vt spada 250 handlebars
-the2wheels adjustable short brake and clutch levers
-harris closed type silicone grips
-techspec on side panels
-neoprene tank-pad, my design and make
-40mm (1.6") lowering of the front (I know that sounds much but works great along with front suspension mods and settings)

Brakes
-front and rear ebc race pads
-front and rear fren tubo high tension hoses
-Z 750 14mm front brake pump
-yamaha fazer 600 s1 front brake caliper with aluminum 7075 spacer, my design and make
-motul dot 5.1 brake fluid

Suspension
- front hyperpro springs 8,5n with 15w fork oil, other valves and 15mm teflon spacers
rear suzuki gsxr 600 k6/7 fully adjustable shock absorber

Aerodynamics
-turn indicators, steering countershafts, mirrors and rear mudguard removal
-zero gravity light smoke touring windshield (special order)

Farkles
-yamaha fazer 600 s1 rear hugger, homemade matching
-monster energy abs fairing
-gear indicator
-3m green rim stripes

Tyres
Bridgestone bt-003rs 110/70 front and 140/70 rear

Superflow dyno sheet
-max power 32.9ps/12180rpm(13000 on tacho) over 31ps from 12000-13100rpm(12750-13900rpm on tacho)
-max torque 2kg/9350rpm(10000rpm on tacho), over 1.8kg already from 6600rpm(7000rpm on tacho)
-top speed 110mph on a straight, 112mph on the dyno or downhills at the rev limiter...
-max acceleration 0':06" on the drag race, 6.5"-6.9" on the street...
-0.22" for 50-150kph (36-93mph) 6th gear rolling

Future mods coming up soon
-66mm overbore high compression oem 2000 zx-6r pistons for 282cc on stock crank
-49mm oem new ninja 300 crank for 335cc
-32mm oem new ninja 300 throttle bodies
-revised cam timing for oversized engine with oem intake cam in oem exhaust's place...
-oem new ninja 300 slipper clutch

update as soon as any stage is complete...
feel free to ask anything that comes in mind (concerning these mods...)

[ninjamunky85]

Sounds awesome, I'd like to see the custom parts you designed.

[micoulisninja]

Originally Posted by ninjamunky85

Sounds awesome, I'd like to see the custom parts you designed.

you're right but have kept almost none...
besides I keep modigying it bit by bit almost every day... right now I've just started the overboring process...

check out a recent vid...

Link to original page on YouTube.

[choneofakind]

What does your ram-air intake look like and how did you tune for it? Curious

That would make the computer need to be hooked up to a speedo sensor right? Or else it would be rich at low speeds (or lean at high speeds)

[micoulisninja]

Originally Posted by choneofakind

What does your ram-air intake look like and how did you tune for it? Curious

That would make the computer need to be hooked up to a speedo sensor right? Or else it would be rich at low speeds (or lean at high speeds)

autotune makes sure that the afr ratio stays where I decide...13.1:1 is my choice for the low quality of fuel we have in greece...and that is being permanently linked to the pc V, receiving data from the lamda sensor and storing trims to set to the pc...

[Jiggles]

Black mamba huh? Well at least you are original

Curious what dyno did you use?

[micoulisninja]

Originally Posted by Jiggles

Black mamba huh? Well at least you are original

Curious what dyno did you use?

good question (and important) Jiggles... superflow, the one that gives 10% less than dynojet values...

[choneofakind]

Ah Auto tune, that makes sense.

[Jiggles]

Originally Posted by micoulisninja

good question (and important) Jiggles... superflow, the one that gives 10% less than dynojet values...

Ah yes, got to be sure to stay away from the dyno jet ones

I'm getting my bike dyno'd on Thursday, I don't think I can beat your 32.5hp

[micoulisninja]

Originally Posted by Jiggles

Ah yes, got to be sure to stay away from the dyno jet ones

I'm getting my bike dyno'd on Thursday, I don't think I can beat your 32.5hp

well I believe it's not that important... what matters is how quick revving you can get it and how you set off from 0mph on the street, or how you use the engine to keep up with larger displacement bikes... it is very important to keep it revving over 10k for that and switching gears frequently to stay in the useful range... the rest is theory that can be overturned by a lighter rider or a bad choice of final drive...
by the way, that's 32.9ps, not .5.... the 32.5 value written on the video is just a mistake I made rushing to write the description...

tip: if you really want to "write" a better power curve just unscrew a tiny bit the rear axle nut... huge mod, might give up to 1ps on the dyno sheet... don't forget to tighten up afterwards !!!

[Jiggles]

Your bike makes 32.5hp and 32.9ps. Those German horses are a bit weaker so you need more of them to get the same effects as American horses

[Jiggles]

Btw I don't have a 2011 ninja 1000 nor a 2012 ninja 250

[micoulisninja]

Originally Posted by Jiggles

Your bike makes 32.5hp and 32.9ps. Those German horses are a bit weaker so you need more of them to get the same effects as American horses

well... I can't argue that !!! hahaha

[micoulisninja]

Originally Posted by Jiggles

Btw I don't have a 2011 ninja 1000 nor a 2012 ninja 250

so, you noticed my new signature, huh ???

[Racer x]

The best power I ever got from a 250cc engine was 34hp at 12500 rpm. I had 13.5 to 1 pistons for that. 32.9 is great. Non O ring chain will free up some torque.

[Jiggles]

Originally Posted by micoulisninja

so, you noticed my new signature, huh ???

No, I read minds

[micoulisninja]

tell that to my wife !! she says I haven't any left....

[micoulisninja]

Originally Posted by Racer x

The best power I ever got from a 250cc engine was 34hp at 12500 rpm. I had 13.5 to 1 pistons for that. 32.9 is great. Non O ring chain will free up some torque.

I 'll take that as a compliment ! seems like I 've done some good job on the engine so far...

[Racer x]

You have done a superb job of tuning Based on the rpm drop between gears from your video.

[micoulisninja]

[red26]

Thats a nice bike over there!
Did you swap the 300 engine to your bike?

[micoulisninja]

not yet Red... engine is due tomorrow or Monday...
I haven't mentioned that this engine had reached 39,5hp before I cracked the cam gear drum while shifting and blew it up...major differences were extra CR, bigger TBs (31mm from a european scooter, Yamaha T-max 500) and even wilder cams....
now I am heading for 10hp more....

[micoulisninja]

Originally Posted by red26

Thats a nice bike over there!
Did you swap the 300 engine to your bike?

@red26 At last !!
please don't laugh (too much) watching the vid... I am so happy that I am making voices, being childish... sorry about that...

Link to original page on YouTube.

mid August I am taking it apart and starting my rebuild....I have everything I need now... just a bit of lightening and balancing rods, pistons, intake valves, matching the exhaust system and by mid September (I am taking my time since my pockets are hollow now) I am beginning project 345cc... I will take pictures and film some of the process for future reference....

[red26]

LOL. Good job dude!
Please do the same video when you put the engine on. do you really need the engine mount?

[micoulisninja]

Originally Posted by red26

LOL. Good job dude!
Please do the same video when you put the engine on. do you really need the engine mount?

well, the 300 engine is not "plug and play" on 250's stock front mounts... I could mod the 250's but the overbore pistons might make the engine a bit buzzier and if I use more 300 stuff in the future I might need them anyway... they help keep vibrations down without being soft...