Just bought a JD jetting kit for 2002 KX 250

[mattb348]

Hey guys. I just ordered the JD jetting kit for my 2002 KX 250. I noticed that it only came with one pilot jet, a #45 (stock is #55)., so I ordered a #52, 50, and 48 just in case. My pilot is way to rich so I think I'll prolly just end up using the recommended #45.

Anyways, the person I talked to said that all the jets were genuine Keihin jets, all except for the 2 needles that came with it, which were James Dean's special tapered needles or whatever. My question is this: do you guys even bother using those modified needles? I'd rather just stick to the stock needle (and play around with clip positition if need be) and only use the slow & main jets in the kit.

Is this a bad idea? Do I have to use the JD needles if I'm gonna use the main & slow jets in this kit? I am putting on a PC pipe/silencer and I just wanna jet it right afterwards, and I don't wanna make things even more complicated by having to put in a new needle.

Thanks for any info!

 

[biglou]

The needle IS the JD jetting kit. That's what you're paying for: Custom needle taper and the instructions on how to use it/them. Otherwise you could have just bought a few jets from your shop for $3-6 each.

 

[CspineRider]

I agree with Biglou, USE the needle and the recommended settings for the clip position and the #45 pilot. You will notice a huge difference.

 

[Rcannon]

The needle is why you bought the kit. Just try it.

I ordered the kit for my yz 250. The needle rocks and is well wirth the money.

 

[coretex]

what are the advantages of a jd jetting kit over the stock? i got a 06 yz250

 

[Rcannon]

The needle is the biggest advantage. It is custom. Most kits come with two needles. The price is also decent considering you get mains and pilots as well.