Im just wondering, if its a jump in hp, I might want to do it. and I cant find any info on it?
here's some info: http://gstwins.com/gsboard/index.php?topic=13196.0
mmm lunch
It stops your lunch from going soggy be increasing the airflow! :thumb:
any guides on how to put it on
lol, ignore my stupidity from before :icon_lol:
from memory they just clamp straight onto your carbs?
A K&N lunch box flows more air than the standard airbox system and in some cases more than pod filters too.
More air, means you can add more fuel = more power!
Don't add more fuel (by rejetting the carbs and your bike will run lean (and maybe hot which is bad!)
Now I have a question:
Can you use the lunch box filters from a pre 2001 bike on a 2004/06?
so if i were to do it (lunchbox) I would need to rejet too?
It is highly advisable. :thumb:
Quote from: TadMC on June 20, 2006, 10:11:01 PM
so if i were to do it (lunchbox) I would need to rejet too?
YES! Your bike will run like poo if you don't.
The K&N pod filter increases airflow to your carbs, if you don't allow your carbs to add more fuel to the mixture, you're defeating the main purpose of adding it in the first place... which is of course MORE POWER! MUAHAHAHAHA! It drastically increases power in the RPM mid range and in the top end.
With a stock exhaust, you're going to want 147.5 mains on a pre 2001 bike, and why not step your pilots up to 40's while youre at it too.
Quote from: galahs on June 20, 2006, 10:08:47 PM
Can you use the lunch box filters from a pre 2001 bike on a 2004/06?
Yeah, they bolt right on no matter what the year.
Quote from: TadMC on June 20, 2006, 10:00:20 PM
any guides on how to put it on
Remove tank, remove air box, remove carbs, jet accordingly, reinstall carbs, clamp lunchbox filter on, replace tank, done.
Quote from: AlphaFire X5 on June 21, 2006, 04:58:12 AM
Quote from: galahs on June 20, 2006, 10:08:47 PM
Can you use the lunch box filters from a pre 2001 bike on a 2004/06?
Yeah, they bolt right on no matter what the year.
Quote from: TadMC on June 20, 2006, 10:00:20 PM
any guides on how to put it on
Remove tank, remove air box, remove carbs, jet accordingly, reinstall carbs, clamp lunchbox filter on, replace tank, done.
It's also possible to mount the filter to the carbs before reinstalling them. That way, you're sure it's on properly and it's much easier to fit.
-M
Quote from: joedude on June 20, 2006, 10:29:07 PM
With a stock exhaust, you're going to want 147.5 mains on a pre 2001 bike, and why not step your pilots up to 40's while youre at it too.
Just wondering, did you follow the rejetting matrix exactly? As in, how many washers and how many turns on the air screw? I'm about to get a lunchbox and some new jets for my 2000, but I've been looking for feedback on the info in the matrix. Thanks in advance for any advice.
Mike
Quote from: badguy on June 23, 2006, 05:55:17 PM
Quote from: joedude on June 20, 2006, 10:29:07 PM
With a stock exhaust, you're going to want 147.5 mains on a pre 2001 bike, and why not step your pilots up to 40's while youre at it too.
Just wondering, did you follow the rejetting matrix exactly? As in, how many washers and how many turns on the air screw? I'm about to get a lunchbox and some new jets for my 2000, but I've been looking for feedback on the info in the matrix. Thanks in advance for any advice.
Mike
Yep, I followed the Matrix pretty much to the letter. Got the Proper Jets and also got the same washers... As for the Mixture screw... I'm in Canada so the air up here is a little denser than it is far south. So I had to play with the air screws a little to get the mixture just right, but I'm talking about 1/16 of a turn at a time to get it just right here... nothing major (I probably could have left it at 2.5 but I'm a little picky)
Following the matrix should workout pretty well for you!
Thanks a lot joedude. I'll find out what's in the carbs now (even though the PO said it had been rejetted, he lied about the progressive springs, so it wouldn't surprise me if the carbs were stock as well). I ordered the lunchbox last night and I'll get the jets today after I find out if I need 40s or not.
Thanks again!
dont use washers, jet it right.
but if you don't use washers, wouldn't that kill your mid range?
Quote from: joedude on June 25, 2006, 12:26:54 PM
but if you don't use washers, wouldn't that kill your mid range?
The '01+ bikes have 3 jets, a pilot, mid-main, and a main. The mid-main takes care of the midrange so you don't need to use washers.
Quote from: AlphaFire X5 on June 25, 2006, 08:11:40 PM
Quote from: joedude on June 25, 2006, 12:26:54 PM
but if you don't use washers, wouldn't that kill your mid range?
The '01+ bikes have 3 jets, a pilot, mid-main, and a main. The mid-main takes care of the midrange so you don't need to use washers.
Yes, but we're not talking about 2001+ carbs here, Badguy's bike is a 2000... so he will need to use washers :flipoff:
hg6
I put my bike back together today with the new jets, two 3mm washers on each needle, the lunchbox, and some sonic springs. It feels like a different bike...soooo much better! Even my grandfather couldn't keep from smiling the first time he heard me give it some throttle after I put the lunchbox on :icon_mrgreen:
Thanks a lot joedude and Wrecent_Wryder :thumb:
Quote from: badguy on July 03, 2006, 08:01:18 PM
I put my bike back together today with the new jets, two 3mm washers on each needle, the lunchbox, and some sonic springs. It feels like a different bike...soooo much better! Even my grandfather couldn't keep from smiling the first time he heard me give it some throttle after I put the lunchbox on :icon_mrgreen:
Thanks a lot joedude and Wrecent_Wryder :thumb:
So you put on the lunchbox, 40 pilots and 147.5 mains with the exhaust remaining stock, right? Sounds like what I want to do. Any problems since?
"dont use washers, jet it right."
How is not using washers not jetting it right?
Chris
these mikuni carbs seem awefully complicated. why do they make us disassemble and rejet for a simple inake setup??? why aren't there any external mechanisms to control air/fuel like 90% of all the other carbs out there!?
Quote from: Chris2P on July 19, 2006, 06:46:43 PM
"dont use washers, jet it right."
How is not using washers not jetting it right?
Chris
See Alpha's post.
Quote from: Egaeus on July 19, 2006, 07:24:11 PM
Quote from: Chris2P on July 19, 2006, 06:46:43 PM
"dont use washers, jet it right."
How is not using washers not jetting it right?
Chris
See Alpha's post.
Then see joedude's post.
The pre '01 carbs are a 2 circuit design, meaning to mess with the midrange you will need to use washers.
Gotcha! I forgot that the 01 and up carbs have the midrange jet.
BTW, I added a lunchbox after an initial rejet and adding a slip-on. I went from a 125 main to a 140 with the lunchbox and an extra washer. And really didnt notice that much of a different in performance. The initial rejet was 40, 1 washer, 125 with a yoshi slip on. Do you think going to a 150 main would make much of a difference?
Chris
Quote from: Chris2P on July 19, 2006, 07:37:09 PM
Gotcha! I forgot that the 01 and up carbs have the midrange jet.
BTW, I added a lunchbox after an initial rejet and adding a slip-on. I went from a 125 main to a 140 with the lunchbox and an extra washer. And really didnt notice that much of a different in performance. The initial rejet was 40, 1 washer, 125 with a yoshi slip on. Do you think going to a 150 main would make much of a difference?
Chris
YES! because you are jetted too lean with the current setting (at 140) you aren't getting all the fuel in there that you should - furthermore you are running HOT which is BAD BAD BAD! if you run for too long you could bend/break stuff! The 'perfect' setting for the setup you have without the slip on is 147.5 Main 40 pilot.... and 150 Mains with both.
to answer you question, yes you will get more power, regardless because you're goint up from a 125 to a 150, which is a huge difference!
Get those Jets Changed!
Quote from: Chris2P on July 19, 2006, 07:37:09 PM
Gotcha! I forgot that the 01 and up carbs have the midrange jet.
BTW, I added a lunchbox after an initial rejet and adding a slip-on. I went from a 125 main to a 140 with the lunchbox and an extra washer. And really didnt notice that much of a different in performance. The initial rejet was 40, 1 washer, 125 with a yoshi slip on. Do you think going to a 150 main would make much of a difference?
Chris
140 to 150 is a jump 4 sizes. I'd say go up 2 sizes, a 145, then see how that feels.
I agree Alpha, if he was the first person doing this ever... but he isn't. Lots of people have tried it one step at a time and bought all the different sizes of jets... its been done, In my opinion, if you wanna save a few bucks just go to the tried and true 150.
Thats just my opinion, take it as you will :thumb:
Quote from: crispy5 on July 19, 2006, 06:05:15 PM
So you put on the lunchbox, 40 pilots and 147.5 mains with the exhaust remaining stock, right? Sounds like what I want to do. Any problems since?
Yep, that's exactly what I did (except one of the previous owners drilled holes in the exhaust, but I don't think that should make much of a difference in this case.)
At first, there was a 'flat' spot from just after I turned the throttle to about 1/8- to 1/4-turn, then it kicked in. I adjusted the float height (I think I may have thrown it off when I had the carbs apart for the rejet) and turned the mixture screws out another half turn (for a total of 2.5) and that made it feel a lot better. After taking it on a long ride since then, it seems like it could be improved a little more, so I'm gonna try turning them out a little more to see what happens, but that's the only issue I've noticed.
Good luck, and if you have any more questions, let me know :thumb:
Mike
I have the same setup, previous owner drilled holes.
Lunchbox with 147.5's - after some fiddling with mixtures and proper synching.... no complaints at all! :icon_mrgreen:
I got a set of 150's. I figured I would try the 140s first because going from 125 to 140 seemed like a really big jump. I'll pop them in and see what happens. Thanks for the info.
Chris