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Need Help Jetting CRF250X
Posted: Fri Jan 12, 2007 8:03 pm
by lvcrf250x
What should i jet to?
i ride from 2000-3500 ft
i got the boyseen AP cover
WB fuel screw
UNI air filter
Baffle removed from air box
and am getting a CHM full exhaust
no CCC mods other than pink wire
Thanks in advanced
Re: Need Help Jetting CRF250X
Posted: Fri Jan 12, 2007 8:05 pm
by Asmith
lvcrf250x wrote:What should i jet to?
i ride from 2000-3500 ft
i got the boyseen AP cover
WB fuel screw
UNI air filter
Baffle removed from air box
and am getting a CHM full exhaust
no CCC mods other than pink wire
Thanks in advanced
Are you going to open the air box?
Remove the backfire screen?
Buy the JD Kit or wing it?
Posted: Fri Jan 12, 2007 8:19 pm
by Halen
Once you answer Agent's questions, he is going to tell you to go with the JD jet kit, red needle in the fifth position, 162 main and then go purchase a 42 pilot from honda...
In my humble opinion just removing the baffle does not allow enough air flow to really make the difference you are looking for. I cut the airbox but left the outer 'rails' intact so if I ever want to replace the baffle I can just glue it back in. It is quite amazing the difference that the X and the R have concerning the airbox. The X is almost closed in comparison. And it seems, all us Xer's, are just trying to get the power handed out by the R.
I was hesitant at first to do all these carb mods but after some fine convincing they all worked out great!
hope this helps... later
Van
Posted: Fri Jan 12, 2007 8:26 pm
by Asmith
Halen wrote:Once you answer Agent's questions, he is going to tell you to go with the JD jet kit, red needle in the fifth position, 162 main and then go purchase a 42 pilot from honda...
In my humble opinion just removing the baffle does not allow enough air flow to really make the difference you are looking for. I cut the airbox but left the outer 'rails' intact so if I ever want to replace the baffle I can just glue it back in. It is quite amazing the difference that the X and the R have concerning the airbox. The X is almost closed in comparison. And it seems, all us Xer's, are just trying to get the power handed out by the R.
I was hesitant at first to do all these carb mods but after some fine convincing they all worked out great!
hope this helps... later
Van
Damn Van,
You are really getting good with the jetting...
Posted: Fri Jan 12, 2007 8:34 pm
by Halen
I didn't mean to steal your thunder...
Posted: Fri Jan 12, 2007 8:36 pm
by Asmith
Halen wrote:I didn't mean to steal your thunder...
No worries! It's nice to learn something first hand and then pass that on to the newbies.
Completes the circle...
Posted: Fri Jan 12, 2007 8:40 pm
by Halen
Good karma on you...
V.
Posted: Sat Jan 13, 2007 11:23 am
by lvcrf250x
The people at honda said that it was way to rich to run the 162. Should i listen to them?
What comes in the JD jet kit?
Posted: Sat Jan 13, 2007 2:11 pm
by Asmith
lvcrf250x wrote:The people at honda said that it was way to rich to run the 162. Should i listen to them?
What comes in the JD jet kit?
The CRF 250X kit contains the Small o-ring, Large O-ring, Red Tipped Needle, Blue Tipped Needle, 150, 155, 158, and 162 Keihin Main Jets.
You can listen to the dealer if you want to, but they are the ones who sold you a lean bike to begin with.
It doesn't matter to us what you run. Our bikes won't run any differently if you run stock jetting. We know what works and what doesn't.
Stick with your stock jetting and have fun...or listen to us and get your bike running the way it should.
Posted: Sat Jan 13, 2007 3:46 pm
by JimmyPwadd
When I talked to the dealer shop manager locally he said the performance would get better given breakin time. He also said they wouldn't would not do jetting or do anything aftermarket. So I came to this site got the info I was looking for, bought the Boyesen Quickshot opened the airbox and rejetted with the JD kit just like agent told me to.
Whoaaaa Nelly! Night and day difference, I love my X now.
When ~ speaks, people listen......
Posted: Sat Jan 13, 2007 7:58 pm
by lvcrf250x
ok ill give it a shot when the pipe gets in.
Posted: Tue Jan 16, 2007 6:35 pm
by fatty432
~ wrote:lvcrf250x wrote:The people at honda said that it was way to rich to run the 162. Should i listen to them?
What comes in the JD jet kit?
The CRF 250X kit contains the Small o-ring, Large O-ring, Red Tipped Needle, Blue Tipped Needle, 150, 155, 158, and 162 Keihin Main Jets.
You can listen to the dealer if you want to, but they are the ones who sold you a lean bike to begin with.
It doesn't matter to us what you run. Our bikes won't run any differently if you run stock jetting. We know what works and what doesn't.
Stick with your stock jetting and have fun...or listen to us and get your bike running the way it should.
Hey A.S.
I'm at 2800 ft. and ride between 2800 and 8000 should i stay with the 42 main, I need to go get one for this weekend.
Jeff
Posted: Wed Jan 17, 2007 11:30 am
by NCLR1
fatty432 wrote:
Hey A.S.
I'm at 2800 ft. and ride between 2800 and 8000 should i stay with the 42 main, I need to go get one for this weekend.
Jeff
Sorry for dippin in but, are you saying that you have a 42 main or pilot?
Posted: Wed Jan 17, 2007 2:26 pm
by fatty432
NCLR1 wrote:fatty432 wrote:
Hey A.S.
I'm at 2800 ft. and ride between 2800 and 8000 should i stay with the 42 main, I need to go get one for this weekend.
Jeff
Sorry for dippin in but, are you saying that you have a 42 main or pilot?
Not sure 05 450x stock, I am jetting this weekend and wondering. Paul Turner is exactly at the altitude i am.
He is running a 45 jet. Love the input. Thanks
Posted: Wed Jan 17, 2007 5:16 pm
by NCLR1
I am sure that others with 450s can help more but, I am sure he means he is running a 45 pilot/slow jet. How much research have you done on jetting so far? Just to get a baseline of what you want.