Thinking about upping the compression in my Ninja [Archive]

cameltoe

3rd October 2008, 21:43

ok as title suggests been thinking of ways to get more power from my ninja.
OK I know its a 250 wait and put the money into a bigger bike, but I cant for almost a year and a half, and the power is boring, IF anyone could be so helpful Im looking into getting longer conrod(forged with forged pistons). I imagine it would be pretty rare finding forged 250cc pistons but dont really know where to look, looked on net but havnt found anything. ALso obviously I am waiting on my yoshi full pipe and jet kit, going to modifiy airbox. would cutting down the gasket be alot easier than the new pistons route. but not change the compression so much that the pistons cant handle it.

Dargor

3rd October 2008, 21:46

Maybe you should try find some corners.

Why cant you put money into a bigger bike.

cameltoe

3rd October 2008, 21:48

i go looking for corners two. Iv just paid $210 for a new rear. Because Like i said in first post license restricts me from getting bigger bike till feb 2010

Dargor

3rd October 2008, 21:54

License's dont stop you getting bigger bikes.

cameltoe

3rd October 2008, 21:56

yea, but the bikes only 4 weeks old, I dont have 20k to buy the zx10 i want or even 16k for a cbr600.

McJim

3rd October 2008, 22:05

Sell the Ninja 250 and buy a used ZXR250.

Much easier and cheaper. Not only that but the old ZXR250 will be better made in terms of braking, frame and suspension (i.e. actually designed to deal with 180kph rather than what you will end up with - a bike capable of reaching 180kph but without the suspension, brakes or handling to deal with it)

aewilliam

3rd October 2008, 22:23

awww...ZXR? how about a piece of two stroke yaw! :woohoo:
Back to back rides on a twin 4stroke, a 4cyl 4stroke and a 2stroke never had me looking back at the 4strokes.

my hat is off to you camel - the temptation to step up without the appropriate licencing has been succumbed to by many :innocent:

Will be releasing my 2003 RS250 back into the wild for some other to tame the beast. Once its got the usual 20K km rebuild done. And my full is gained, hopefully in a few weeks... :done:

T.W.R

4th October 2008, 07:28

ok as title suggests been thinking of ways to get more power from my ninja.
OK I know its a 250 wait and put the money into a bigger bike, but I cant for almost a year and a half, and the power is boring

There's an old saying "You've got to learn to walk before you run" think about what that implies :shifty:

IF anyone could be so helpful Im looking into getting longer conrod(forged with forged pistons).

Longer stroke means more torque not more HP, plus on a motor like a 250 means a lot of headaches

ALso obviously I am waiting on my yoshi full pipe and jet kit, going to modifiy airbox. would cutting down the gasket be alot easier than the new pistons route. but not change the compression so much that the pistons cant handle it.

pipe, jet kit, & airbox tweak maybe 3-5hp gain if your lucky. :laugh: have you seen how thin a head gasket is as a stock item, good luck trying to slice one.

If you're wanting a snotty 250 go for a 2smoker :yes:

cameltoe

4th October 2008, 08:27

whats the fine, if i get pulled over on a liter bike on my learners?? I wouldnt be able to get insurance either, its a hell of a risk buying a bigger bike, the temptation would be too much for me. I bet I would be pulled over doing like 250+on a bigger bike:Oops:

jrandom

4th October 2008, 08:38

ok as title suggests been thinking of ways to get more power from my ninja.

Fuxache.

Bring it to MotoTT (www.motott.co.nz) and learn how to go round corners on it first.

OK I know its a 250 wait and put the money into a bigger bike, but I cant...

Heard of savings accounts? 18 months really isn't that much time.

longer conrod(forged with forged pistons)... yoshi full pipe and jet kit...

Jesus fucking Christ, talk about gilding a turd. Just ride the poor little thing. It is what it is.

Doing all the shit you want will double what the bike owes you without increasing its value one cent, and a GS500 will still piss all over it.

jrandom

4th October 2008, 08:39

cameltoe

4th October 2008, 10:10

thanks for your opinion arsehole

aewilliam

5th October 2008, 11:37

thanks for your opinion arsehole

yaw yaw chill yaw chill! the 'full of love and disrespect' should tell you a decent story aye.

whats the fine, if i get pulled over on a liter bike on my learners?? I wouldnt be able to get insurance either, its a hell of a risk buying a bigger bike, the temptation would be too much for me. I bet I would be pulled over doing like 250+on a bigger bike:Oops:

ok, so you reckon you need a 1000cc bike to get pulled over/lose your licence on? well...you can do that on your Ninja.
And it would CERTAINLY suck to spend large on the 250cc to make it go faster in a straight line, only to have to spend large AGAIN by paying fines/losing licence.

CamelToe, methinks you need some new roads to traverse with your mighty steed - 100kmh roads that let well piloted GN250s keep up with equally well piloted 900s. Motorways and commuting suck - they only let you use $100 of a $300 rear tyre (the centre bit).

aewilliam

5th October 2008, 11:40

If you're wanting a snotty 250 go for a 2smoker :yes:

I feel for the twin/4cyl 4stroke 250's getting covered in the snot from my RS250 :bleh:

avgas

5th October 2008, 11:50

learn to ride fast - will add an extra 50hp to your bike
tosser

rwh

5th October 2008, 11:53

Longer stroke means more torque not more HP

How exactly does longer conrods give you a longer stroke? Surely you need a larger radius crank for that.

Longer conrods will increase the compression ratio, as he says - as long as they don't put the piston through the head ...

Richard

Taz

5th October 2008, 12:00

How exactly does longer conrods give you a longer stroke? Surely you need a larger radius crank for that.

Longer conrods will increase the compression ratio, as he says - as long as they don't put the piston through the head ...

Richard

Eggzakery!

And as for the ninja keep it standard learn to ride it better. Treat it nice and enjoy it. You'll be repaid by better resale when it comes time to sell and you wont have wasted dollars on pointless engine mods.

cameltoe

5th October 2008, 12:27

davebullet

5th October 2008, 16:26

yea decided not to do it,
i think I will put down a deposit for a r1 or 1098 bout this time next year if I can and pick it up when license allows, I also heard I might be able to get a ducati minster 400 when the power/weight thing comes in, which I heard is feb nxt year

Good call. In the meantime, see the time left as a challenge for how much you can ring out of your Ninja. Use your Ninja to become as smooth as butter, so you can treat that 1098 gearbox with the respect she deserves.

Nice one,
Dave.

325rocket

5th October 2008, 17:35

yea decided not to do it,
i think I will put down a deposit for a r1 or 1098 bout this time next year if I can and pick it up when license allows,

even better, by that time rossi's 08 yzr m1 could be up for sale

Jerry74

5th October 2008, 22:29

Just bide your time I have had big bikes in the past too until I got caught $400 later I decided to get back on 250.

The old Kawasaki 250 still has a trick up its sleeve now and then.

Better to get your full and then have some fun.

vtec

6th October 2008, 17:55

lostinflyz

6th October 2008, 18:13

why does every monkey and his mum want an R1. Everyone i have ever seen on an R1 is slow as all hell. and dresses like a fag on the road. If your wearing full 3 grand race leathers, ride like you might need them. You dont need to be going ape shit but you should be going faster than a bike with less than 1/3 the power and 22 years old.

learn to ride cameltoe. There is nothing worse than people on flashy bikes (in full kit with full titanium exhuasts)riding it slower than most people ride a harley. As for the ninja leave it alone. If you think it needs more power your not trying enough.

If you need more power go get a 2 smoker or 400. either way one day you may be fined on one or the other (if the new rules ever happen). if you can afford a 09 ninja and still have enough left over for a 1098 in a year (or even two) i think you should have more than enough dosh to pay a few fines.

blossomsowner

6th October 2008, 18:38

You are an idiot.

good call jrandom. if this guy goes from a ninja 250 to any sort of thou he'll be lucky to get round the first few corners (that extra 100+hp sure makes things happen quicker eh?)

Katman

6th October 2008, 18:56

You are an idiot.

Was going to say +1.

Looks like it's +2 now.

jrandom

6th October 2008, 18:57

Was going to say +1.

Looks like it's +2 now.

Actually, I'm starting to suspect that he's a trolling alter ego. He's too good at pushing the buttons.

HTFU

6th October 2008, 19:41

yea, but the bikes only 4 weeks old, I dont have 20k to buy the zx10 i want or even 16k for a cbr600.

yea decided not to do it,
i think I will put down a deposit for a r1 or 1098 bout this time next year if I can and pick it up when license allows, I also heard I might be able to get a ducati minster 400 when the power/weight thing comes in, which I heard is feb nxt year

<s> many a bike choice there buddy :crazy: got to get the boy racer out of your system if you want to stick around on the bike thing. Why not a 650 twin to be had for $10000 in a deal. And talk to us about it 1 year from now. Crazy man.

I think what you really want is to chill out, enjoy your ride, and over time hopefully you will realise that 99.9% of riding enjoyment on the open road can be had on the awesome bike you already own, especially for someone in their first few years.

A high need for straight line speed and acceleration is usually indicative of someone looking for cheap thrills but it is ultimately a costly one in many ways, with the big bike purchase price, fuel, tyres, the high speed bins and brushes with the law.

Take what you want from the opinion of a relatively new rider who has done over 45000km on 250cc bikes, with no bins, no fines and who regularly rides with guys on 650+ machines. </s>

Just read the post below - the young fulla is 16. The above is now irrelevant - as you were.

Squiggles

6th October 2008, 21:18

A selected few posts

bang on the money. is that a problem that im 16. im mean I spose you are going to think im a immature guy with no brains trying to kill myself?? like I said, I think about where i speed, Im also practicing stunting. surely theres a right and a wrong place for everything. it was just chance that this bloody cop was there, me speeding thru there posed no risk whatsoever to any other person in the world except me. the road is surrounded by hills on either side with no streets or driveways.

hey guys,
anyone got a '09 ninja??
Im picking mine up tomorrow from the shop. First real bike, really looking forward to it. to answer one question the warranty on the hyo is defianately 1 year Vs 2 on the ninja. Im 183mm and only sat them both once but felt hell ov alot comfier than the hyo.

I just love these threads, next one will be asking if you're supposed to blip the throttle when downshifting :laugh:

Power is nothing without control, whether you have it and whether you think you do are two completely different stories. :msn-wink:

cameltoe

7th October 2008, 10:46

gimme a break, I just like going fast.

nodrog

7th October 2008, 11:04

http://www.kiwibiker.co.nz/forums/attachment.php?attachmentid=106253&d=1222289574

michael

7th October 2008, 11:10

A few guys have already said this, but you can never hear this enough. Go around sum corners in ya 250! Dont be in too much of a rush for ya big bike, you'll probably find that you don't know shit on how to really handle a bike when you eventually get ya litre or 600 (even though you think you're Rossi now, I know I sure did), and probably wish you pushed harder on ya 250 where the consequences aren't as LIFE THREATENING!

R6_kid

7th October 2008, 11:16

Get a Monster Energy sticker kit, that'll be good for about 15hp.
Yoshimura slipon +1.5hp
K&N Airfilter + 1
Re-jet the carb + 1hp
Rim stickers + 2hp per rim done

Then a nice cup of HTFU so you can deal with being on a slow ass 250 for the next 18mths.

Of course, you could get in touch with a mentor and learn some skills that might save your ass, instead of just 'going fast'.

avgas

7th October 2008, 11:25

gimme a break, I just like going fast.
left or right leg - i can do it now if you want

fatzx10r

7th October 2008, 11:41

i would'nt bother mucking around trying to get more hp out of your ninja, chance's are somthing may fuck out and void your warranty. just ride it and enjoy it, biuld up some skill's for when you can get a bigger bike. and if you are looking at a zx10r for your next bike..... practice as much as you can now, because there a completly different animal :devil2:

vtec

9th October 2008, 17:55

I get more fun from riding a bike to it's limit than from having tonnes of power and going extremely fast. I've had tonnes of fun on NXR125's (my courier bike) and RGV250s and the most fun I ever had was on my CBR250RR... lots of track time :) The bigger bikes weren't as fun because you do have to hold back a lot more, and they cost a fortune in tyres. Cherish your 250. They are great bikes.

Don't bother trying to mod them, the factories did a great job of making them the perfect mix of reliable and screaming.

I'm cleaning up over here in Aussie on my standard (and it's not even running very well) CBR250, won races at philip Island on it. Bought it as a write off for $2500. The main thing that makes me better, braking and corners. Get them right first, you make up tonnes of ground getting those two right, the other guys have modified the crap out of their bikes, to give them a minimal advantage, and no excuse when they lose :P

racefactory

9th October 2008, 21:36

License's dont stop you getting bigger bikes.

Indeed- license's do not stop you. Ride sensibly and learn to use your mirrors at every chance, wear proper, full gear and act responsibly and you won't have any trouble. Easier said than done.

Had less than a week on a 250 and then spent rest of learners on a VFR400 NC30 and it taught me to be fucking sensible on the roads... the shocking price of 250cc bikes was the motive and i've saved a lot of money as a result. full gear all the time, 50k all the time but boy was all the conservative riding worth it when you get free from the city and suburbian areas. Not everyone can hack it though, stay off of it if you truly can't stick to 50k all the time. No? Thought not... you'll get yourself in deep shit if you honestly can't do that. deep shit.

I agree with the others... stop worrying about straight line speed and read some theory on cornering/ braking and start applying that to some good corners... what i did was work up to go around bends no slower than the speed limit. Also in the wet... good fun and useful too. corners and braking is where all the fun is at......and finding the limits. Like the guy above said- it's way more fun getting the limits out of a machine than having a machine you can't ride properly. it's great aiming to improve your technique and very fun to see the results...

marioc

10th October 2008, 07:10

I smell a troll for sure

Grub

10th October 2008, 07:21

yea, but the bikes only 4 weeks old, I dont have 20k to buy the zx10 i want or even 16k for a cbr600.

OK, first of all, that bike is TIGHT and therefore down on power. It may also be 'detuned' until the first service (if they still do that on some models). Give it a chance. You need the saddle time anyway.

Oh yeah and you can say goodbye to your warranty.

Grub

10th October 2008, 07:30

R6_kid

19th October 2008, 20:32

Honestly bro, get some stickers.

NOMIS

19th October 2008, 20:41

Plenty of fun to be had on the 250's mate. No need to modify, any gains are marginal. Maximum gain to be had of about 10% without massive allround mods. In short don't bother, or if you get desperate. I've got a CBR250RR for sale, best tyres money can buy on it. PM me if interested. Otherwise I'll be racing it when I get back to NZ.

He probally thinks he is a better rider than you tho ;-) lmao... Just got a new ninja and thinks he could handel a zx10r .. shit man..

alot of people who do own them cant handel them