cbr250rr modifications

[BladeBoy]

Is there any modifications a can do to my mc22 to give it more power? if i opened up the airbox slightly and put air intake into the box would it do anything or just make it run to lean? i think they squeeze all the power they can out of these little motors but there must be something else i can do. its got a smaller front sprocket and an aftermarket can already.

[vtec]

You serious about mods. Ask the guys at www.cr-x.org/cbr250/

In reality, I always raced the mc22 as standard and I won a lot of races on them. Even in Aussie where people were allowed mods and there were plenty of major mods done. The best mod you can do is to your own riding ability, get some track time.

If you play with the air flow ala exhaust/intake free flowing, you'll need to play with the jetting too, which is all too much of a pain in the arse in my opinion. They run awesome from standard, and are very reliable don't fuck with them.

[BladeBoy]

oh yea. sweet as thanks for your input. yea its a mint runner aye and faster than any of my mates 250s and realible as hell. just want a bit more out of it aye. i can get my full now so might be easier to just upgrade.

[The Pastor]

yeah mate you can do lots.

You can rip the aribox off completely put in a full exhaust system and wack 145 main jets in ur carb and get it balanced it'll run pretty damn sweet and sound SOOOOOOOOOOOOOO good.

You can remove the 180km/hr limiter really easily, its just cutting a wire and adding in a resistor.

then you can play with the cam etc

you wont gain mega hp out of it, i think you'd only be able to get 40-45 at the wheel max.

unless you run a nitro mix in ur petrol

[SS90]

yeah mate you can do lots.



you wont gain mega hp out of it, i think you'd only be able to get 40-45 at the wheel max.

hmmm, dunno about 40-45 hp there mate.

I have operated dyno's for the last 8 years or so, and the most I have seen on any 250 I.L.F is 35 HP. Most are 32HP

45 HP is quite a bit!

a good road going I.L.F 400 will only make 60HP, most are around 55HP

[The Pastor]

hmmm, dunno about 40-45 hp there mate.

I have operated dyno's for the last 8 years or so, and the most I have seen on any 250 I.L.F is 35 HP. Most are 32HP

45 HP is quite a bit!

a good road going I.L.F 400 will only make 60HP, most are around 55HP

i reckon 10 extra hp is possiable with mods?

[The Pastor]

Is there any modifications a can do to my mc22 to give it more power? if i opened up the airbox slightly and put air intake into the box would it do anything or just make it run to lean? i think they squeeze all the power they can out of these little motors but there must be something else i can do. its got a smaller front sprocket and an aftermarket can already.

http://www.trademe.co.nz/Browse/List...x?id=246956229

stack load of mc22 parts forsale

[SMOKEU]

Get a turbo for it.

[Blackshear]

RE: Mr.Dyno reporting 35hp L-4's, did the manufacturers take the HP readings from the crank?

[gatch]

a good road going I.L.F 400 will only make 60HP, most are around 55HP

how bout a v4 ?

[sil3nt]

RE: Mr.Dyno reporting 35hp L-4's, did the manufacturers take the HP readings from the crank?

Fairly sure they all do unless otherwise stated.

[McWild]

A friend's CBR250RR made 44RWHP when it was dyno'd about a month ago.

Not saying there couldn't have been dyno error, but the dyno seemed about right with the other bikes on it.
They were an '03 GSXR600 making 103 and a Bandit 250 making 35ish but it was running averagely.


You could always just take off the can entirely, makes quite a sound from personal experience!

[SS90]

A friend's CBR250RR made 44RWHP when it was dyno'd about a month ago.

Not saying there couldn't have been dyno error, but the dyno seemed about right with the other bikes on it.
They were an '03 GSXR600 making 103 and a Bandit 250 making 35ish but it was running averagely.


You could always just take off the can entirely, makes quite a sound from personal experience!

Like I say, I have never seen more than 35HP from an ILF 250.

You can argue about results till your blue in the face, and at the end of the day it is all Academic.

Do you have a printout available for your mates 44 HP run?

I have just Googled for the last 20 mins, and all I have come up with is this......

It always impressed me that the CBR's (later model ones) where more powerful than the ZXR's (I expected the other way round), but like I say, I never saw more than 35 HP.

I guess it is down to the model though, and obviously I have not "seen them all", if anyone can furnish a dyno run for a CBR250 I would love too see it!

44Hp is quite a bit!

Although, I do remember that some later models revved to something like 20K, that's quite a bit, but at revs like that you suffer down low......

[CookMySock]

Tyres and suspension mate.

Steve

[McWild]

Like I say, I have never seen more than 35HP from an ILF 250.

You can argue about results till your blue in the face, and at the end of the day it is all Academic.

Do you have a printout available for your mates 44 HP run?

I have just Googled for the last 20 mins, and all I have come up with is this......

It always impressed me that the CBR's (later model ones) where more powerful than the ZXR's (I expected the other way round), but like I say, I never saw more than 35 HP.

I guess it is down to the model though, and obviously I have not "seen them all", if anyone can furnish a dyno run for a CBR250 I would love too see it!

44Hp is quite a bit!

Although, I do remember that some later models revved to something like 20K, that's quite a bit, but at revs like that you suffer down low......

I can ask him to take a photo of it or scan it and post it up (or I will) when I get the chance. I think it would be interesting to get it run at a different place as well but really it's just not worth the money for a simple comparison.
I have to say that it does feel like it has a bit more pull than the last MC19 I rode.