Sync Carb must after Jet Kit installation?

vmax · January 22nd, 2013, 10:45 PM

Hi,

Here is a story of my bike. Bike run fine with stock setup from factory (even with slip on). After reading all thread and jetting dabase I purchase Factory Pro jet Kit. And this is what I do :

1. I installed/replace the needles and put eclip on 3 and 3 washer above. I ride my bike and notice at 9K bike seem bog and won't past 9k. (hard to climb from low end). Mixture screw Left 2.5 Right 2.5 as factory pro instruction.
2. Then I try to lower the needle and I put eclip on 2(put 2 washer above), test ride again and feel pull strong on low end and midrange, but whe I rev the thortle, it seems any hesitate the rev to high. Mixture screw 2.5 both.
3. I try eclip still on 2 (1 washer above clip and 1 washer under eclip). Test run bike seems ok but not as pull hard from low. Mixture screw 2.5 both.

So my question is which combination was close to right setup and should I sync carb after installed jet kit? Because I play with the mixture screw and change with Left 2 3/4 Right 2 on all my combination test above and look like better then stock FP mixture.

all test using stock PJ and MJ

thanks

Jiggles · January 22nd, 2013, 10:50 PM

Did you change the jets at all?

in number one, when it would bog, was that under partial throttle or full throttle?

vmax · January 22nd, 2013, 10:54 PM

thanks for short reply. Bog under partial throttle and would not past 9K.

Quote:

Originally Posted by Jiggles

Did you change the jets at all?

in number one, when it would bog, was that under partial throttle or full throttle?

Jiggles · January 22nd, 2013, 10:58 PM

Try removing your snorkel and going with either option 1 or 2

NathanUc · January 27th, 2013, 01:49 AM

I had this issue when I first did my rejet. The problem was my main jets were too big (main jets = high revs). I was using a stage 2 kit from FP. FP recommends using the 90 main with 40 pilot for a stock air setup.

If you (like me) bought the stage 2 kit, you'll need to remove the airbox and install pods if you want that jet kit to work for you. Otherwise, you'll need to go back to your stock 98 main and stock pilot (you can still use the FP needle to shim and get better response on the low/mid range).

January 22nd, 2013, 10:45 PM	#1
vmax ninjette.org member Name: max Location: bali Join Date: Nov 2012 Motorcycle(s): ninja 250 Posts: 60	Sync Carb must after Jet Kit installation? Hi, Here is a story of my bike. Bike run fine with stock setup from factory (even with slip on). After reading all thread and *jetting dabase* I purchase Factory Pro jet Kit. And this is what I do : 1. I installed/replace the needles and put eclip on 3 and 3 washer above. I ride my bike and notice at 9K bike seem bog and won't past 9k. (hard to climb from low end). Mixture screw Left 2.5 Right 2.5 as factory pro instruction. 2. Then I try to lower the needle and I put eclip on 2(put 2 washer above), test ride again and feel pull strong on low end and midrange, but whe I rev the thortle, it seems any hesitate the rev to high. Mixture screw 2.5 both. 3. I try eclip still on 2 (1 washer above clip and 1 washer under eclip). Test run bike seems ok but not as pull hard from low. Mixture screw 2.5 both. So my question is which combination was close to right setup and should I sync carb after installed jet kit? Because I play with the mixture screw and change with Left 2 3/4 Right 2 on all my combination test above and look like better then stock FP mixture. all test using stock PJ and MJ thanks

January 22nd, 2013, 10:50 PM	#2
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	Did you change the jets at all? in number one, when it would bog, was that under partial throttle or full throttle? __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

January 22nd, 2013, 10:58 PM	#4
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	Try removing your snorkel and going with either option 1 or 2 __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

January 27th, 2013, 01:49 AM	#5
NathanUc B-Town Ninja Name: Nathan Location: Bloomington, IN Join Date: Feb 2011 Motorcycle(s): Black 2013 Ninja ZX6R ABS Posts: 609 Blog Entries: 3	I had this issue when I first did my rejet. The problem was my main jets were too big (main jets = high revs). I was using a stage 2 kit from FP. FP recommends using the 90 main with 40 pilot for a stock air setup. If you (like me) bought the stage 2 kit, you'll need to remove the airbox and install pods if you want that jet kit to work for you. Otherwise, you'll need to go back to your stock 98 main and stock pilot (you can still use the FP needle to shim and get better response on the low/mid range). __________________________________________________ Downgraded to a 2013 636. Previous owner of a 2010 250r --------------------------------- My moto-vlog YouTube channel http://www.youtube.com/bloomingtonninja
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