KTM 300 EXC-e Jetting Spec – OLD Bull Trailriders

This topic contains 10 replies, has 0 voices, and was last updated by Paul Gidley 17 years ago.

Viewing 11 posts - 1 through 11 (of 11 total)

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September 10, 2008 at 10:54 am #95107

Chris Warwick
Member

Hey Guys

Anyone out there got the ‘heads up’ on half decent jetting spec’s for the 2009 KTM300, as KTM factory settings supplied are very average!

Cheers
Dr D

September 11, 2008 at 2:51 pm #108111

David
Member

Give this a go if your game Mate
N3CH Needle in clip #3 –its from a 2003 250 SX
38 pilot
168 main jet
Air screw at 1 ¼ turns out
Should rip your arms out Man
Enjoy

April 2, 2009 at 7:41 am #108135

Jason
Member

Dr D

I have messed around with my bike and since November 2008 have enjoyed the following JD Jetting (about $140 and 5 minutes effort).

Main Jet – 162
Idle/Pilot Jet – standard
Jet Needle – red
Clip – 3rd from starting position
Air – 1 complete turn only

Delivers smoooooth power / torque and revs clean right off the bottom. (Note – all the standard weazel word disclaimers should apply here should you hate it) :silly:

Goodluck

April 2, 2009 at 9:04 am #127825

Chris Warwick
Member

Hi Guys

This what has have tested and have been running for some weeks now with know problems.

Pilot 38
JD Red neddle on clip #2

Main jet 158

Air Srew at 1.5 turns out

It feels very smooth all the way through the rev range

Cheers
Dr D

April 2, 2009 at 10:32 am #127855

Jason
Member

Sounds good – but would be interested in what fuel mix ratio are you using? As I recall, JD RED needle (runs leaner) and BLUE (richer) and JD recommend BLUE with clip in position 2 and air mix at 1.5 turns.
I run fuel at 40:1 so with a RED needle I have the clip at position 3 (richens/increases fuel)and it only needs 1 turn of the idle jet. What impressed me most with this setting was the extra fuel range I got for each ride.

April 2, 2009 at 11:12 am #127877

Chris Warwick
Member

Hi Fezza

I run it at 50:1 on motorex and my range two weeks ago was 6.5 litres for about the 100kms if you add up my jet range it’s 38 and 158 wich is 196 and JD jetting kit requested 195 at sealevel up to 6000 ft .So i’m alittle on the rich side but it go real well all the way around single trail and the open fire trail as well.

Cheers

Dr D

April 2, 2009 at 10:12 pm #127879

Jason
Member

Dr D
Sounds like you are well sorted. The economy you are getting is second to none, you must be happy with that!
ps. you’re not Dr Dan on DBW are you?

April 2, 2009 at 10:20 pm #127898

Chris Warwick
Member

Hey Fezza

No Dr D is Chris warwick a friend of crash and trailboss, give this jetting ago and see if can feel the change in the power, also using the yellow spring on Powervalve

April 9, 2009 at 12:26 pm #127902

Jason
Member

Cool…I will have a crack at the different settings, that is one of the great things about the 3hungee, you can play with so many settings relatively easily. Unfortunately the only thing holding me back is the 8 weeks needed until I can ride again. I was a bit ambitious at the Kowen Rally on the weekend and binned the bike hard, fracturing both my arm and shoulder. Stupid really I still had another loop to complete and some really cool rides set-up. The next ride can’t come quick enough.

April 9, 2009 at 12:31 pm #128632

Greg
Member

No good mate, rest well, PDS get ya?

TB

April 22, 2009 at 11:14 pm #128634

Paul Gidley
Member

I have a 2008, but I understand its the same donk as the 09. I have the following set up for riding mainly below 1500 ft: –

Stock needle – NZ2J ( or is it N2ZJ?) – 3rd clip
Air screw 1.5 turns out
main 160
pilot 35

Get about 110 k from a tank, is responsive throughout the rev range, mix at 50:1 (full synthetic).

Cheers
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