« previous next »
Pages: [1]   Go Down

Author Topic: 03 KX250 jetting  (Read 3923 times)

0 Members and 1 Guest are viewing this topic.

Offline TJXK

  • Full Member
  • ***
  • Posts: 153
03 KX250 jetting
« on: August 01, 2013, 10:22:59 AM »
I'm sorry this is kind of a stupid question, but I'm riding my 03 kx250 in the woods and don't need the kind of power that the pro circuit pipe makes.  I have heard that the stock pipe (which the guy saved and gave to me) has more manageable power. 

Could anyone tell me if this is true?  Also would I need to make any jetting adjustments?   I haven't jetted in nearly a decade so I'm not really sure where to start. 

I'm also getting the 04 powervalve governor spring and a g2 adjustable throttle cam.  I can't afford a gnarly pipe.
« Last Edit: August 01, 2013, 10:24:39 AM by TJXK »
Logged

Offline Foxx4Beaver

  • Hero Member
  • *****
  • Posts: 8,952
  • James Stewart DID NOT invent the scrub!!..JoJo
Re: 03 KX250 jetting
« Reply #1 on: August 01, 2013, 10:36:34 AM »
I actually had the same thoughts on the 2000 I just completely rebuilt from top to bottom.


I strapped on a PC setup and wish I had gone the other way and went for a low-end pipe.I found I had to ride it hard and clutch the s**t out of it in the woods to get it to snap for me....sooooo,instead of spending another fortune on an exhaust....I ended up playing with the gearing a bit since I had several sprockets laying around.I'm at 12-48 rite now and it seems to be working for me.
Since you have the stocker...throw it on and see how you like it...and report back. :-D
Logged
Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline sandblaster

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 8,272
    • OEM-CYCLE QUALITY USED PARTS
Re: 03 KX250 jetting
« Reply #2 on: August 01, 2013, 10:37:19 AM »
For what it's worth...
Logged
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline Foxx4Beaver

  • Hero Member
  • *****
  • Posts: 8,952
  • James Stewart DID NOT invent the scrub!!..JoJo
Re: 03 KX250 jetting
« Reply #3 on: August 01, 2013, 10:48:54 AM »
as for my jetting...I'm as follows

Main 158
Pilot 45
Needle N3YE (4 steps leaner over stock)
2nd from top
Power Jet 48
Slide #7

I went much leaner over stock...I don't think my jetting will help you too much,because the 03 and 2000 have different setups I believe.

Logged
Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline stevea100m

  • Full Member
  • ***
  • Posts: 123
Re: 03 KX250 jetting
« Reply #4 on: August 03, 2013, 12:52:47 PM »
I know on my 03 with a PC pipe setup I geared mine way goofy 14 and 48 to get it to be able to control it in the woods.
Logged
Pages: [1]   Go Up
« previous next »