Go Fast(er) Bits!!! Where to start?

[.produKt]

Im bit of a tinkerer. I think the old zxr has 46 hp @ 12,000rpm's?

Heh it'll be funny to dyno it, to find its making more than standard anyway :P

[metric]

but thanks all, these are some good ideas for me too...

I need to get a wof & service done on my bike, and I'm going to have it for another three months at least - quick & easy top 3 improvements from those listed above?

am thinking as per what kickingzebra said: Clean and gap spark plugs, make sure air filter and carbies are clean? would this be covered by a service?

[onearmedbandit]

Sparkplugs and air filter yes, you'll have to request a carbie service though.

[Coyote]

It's not worth it. Once you sell the bike you'll realise it was pretty quick already. Just enjoy the 18,500rpm redline untill your full licence

I miss my old CBR

[R6_kid:Me]

Im bit of a tinkerer. I think the old zxr has 46 hp @ 12,000rpm's?

Heh it'll be funny to dyno it, to find its making more than standard anyway :P

you'd be lucky mate. The standard number i have heard is 45, and there is debate as to whether that was crank or wheel... my R6 is said to have 120hp at the crank, and gets 98hp at the wheel in good nick... when i got it done it has a meesily 92.6hp thats with a race can, K&N and a dynojet kit too.

tristank's ZXR250C came in at 36hp but needed a tune, so might get 38-40 out of it if your lucky. And his is in good nic, opened up zorst, carbs tuned to the zorst, and had valves etc done too.

Basically if you want more speed then get a two stroker. I was lucky because i was only on a top of the line 250 for 6mths... before that i only commuted. Tristan has been on his for ages now, and is just waiting it out til his full. If you want, get on an FXR150 for a week - then tell us your ZXR is'nt enough for you

p.s get out in the twisties, keep it above 12k rpm and you shouldnt have any problems with power... if your a good rider it will be a hard task to get past you, otherwise you got lots of room to improve.

[Ixion]

By far the most effective tuning for a 250 being ridden by a learner is to spend time and money upgrading the nut that holds the handlebars.

Which has the extra benefit also, unlike other approaches, that maybe youget to stay alive, and the bike stays unbent.

[stanko]

Come out to Ruapuna and run in the Streetstocks you will be up against RG150's and buckets. A fast 100cc bucket (not me) will probably kick your ass. You will learn so much. Boy will you be suprised how much there is to learn about your current bike. There is a have a go day at levels on 13 may

[Rashika]

By far the most effective tuning for a 250 being ridden by a learner is to spend time and money upgrading the nut that holds the handlebars.

Now that is FUNNY, but oh so true!

Come out to Ruapuna and run in the Streetstocks you will be up against RG150's and buckets. A fast 100cc bucket (not me) will probably kick your ass. You will learn so much. Boy will you be suprised how much there is to learn about your current bike. There is a have a go day at levels on 13 may

yeah, sounds like a damn good idea. Ya might find that the bike is going plenty fast enough, and get a chance to see how it stacks up with you riding it on an open track, against other similar bikes. You should have been out there yesterday, was loads of fun watching the blokes Maybe one day I will do more than watch...but I'm a little chicken really.

[aff-man]

ok first of all the way to make your bike faster is ride the nuts off it.... where are you changing gear?? You should be changing between 11000 and 14000 rpm normally or at about 16000 if you are going hard... They are little screamers so do get put off by the noise the make. The bike rides smoother when changing at about the 12k rev mark as well.

Air induction is a joke so unless you make some significant modifications to the air intake system there really is no way to improve power there. Good plugs a can and a good air filter will help you on your way. With these you might be looking at about 40hp at the rear wheel. Ok the next suggestion doesn't really improve the power of the bike but if you get really good tyres you'll find you'll be able to go much faster round corners and use the bike to it's full potential. You shouldn't need to do to much till your running full tap with the bike cranked way over and then thinking you need some more.

If you want a more powerfull bike , and although i hate to say it, get a 2 smoka. An rgv or nsr will be the bussiness and you can get 300cc kits for them as well as quite a few tasty after market bits...... but then it is a 2 stroke.

So in summary= change bike or just ride it harder

[CBobR]

Agree with all the trackday recommedations, but if you are a tinkerer you might be interested in this CBR250 that someone in Oz has stuck a turbo on: http://www.cbr250.com/cbr250/forum/t...72&whichpage=1
Not much info in that thread but a couple of nice photos.

My CBR is heaps of fun, I'll probably never sell it so I would like to try to turbocharge it myself oneday just to learn more about engines. It will still be way slower than my 600 but I think it would be a fun experience.
Good luck (and go the trackday!)

[_intense_]

IMO, dont worry to much about making your 250 gofaster, they're such small motors, VERY highly tuned anyway, is it really worth working it that much harder with more air/fuel/power? Save you coin for a bigger bike if speed is all you want. by all means lovingly care for her and retune her and fit all the good bits, like i did mith my CBR250 (a far superior bike imo ) Its all been on this forum before: http://www.cr-x.org/cbr250/forum/default.asp and im reminded of the dude who got 55/58 horses out of an RR which leaves the factory putting out 45hp. It lived for about three hours if i remember rightly.