Jetting Database - PLEASE ADD YOUR SETTINGS

[Gibby]

2013 gas gas xc 300r South Alabama, Hot, Humid, Sea level
main 172
pilot 40
airscrew 1.5
top clip stock needle
golden spectro 44 to 1 93 octane, 100% no corn fuel.
I mainly ride tight single track, TECHNICAL woods, roots and sand
I am 6ft
200lb
intermediate rider,
Bike feels crisp with these settings, took a minute to get it lean enough,
Now just minimal spooge and rips all the way through the power curve.
suspension still working me felt reel stiff and divey in the front when stock,
This is were I am at now: I have adjust forks pfp 1.25 from full out, compression 14 from full in, rebound 16 from full in. rear shock backed off on spring 1.75 turns, rebound 20 out from in, compression 16 out from in, starting too feel a little better then it did stock though, only 10 hours so far I am still trying to dial it in!

13 gas gas xc 300r
02 drz 400 s love this thig to get to work
97 ktm 250 sx needs love but awesome
99 ktm 300 mxc sold
97 ktm 300 exc sold
89 ktm 250 exc sold
lots of other crazy.

 

[n_green]

Bike year & model = 2011 EC300E fitted with 36mm x 39mm oval bore modified Keihin PWK ASII carb and reed block spacer and fitted with modified head (squish - 1.28mm, compression ratio - 12.7:1)
Temperature (degC) = 20-25 degC,
65% - 80% humidity
Elevation (feet) = 1000f, or 100 - 300m.
Main jet = 180
Pilot jet = 42
Needle & notch =N3CH #3
Air screw setting = 1 turn out
Throttle valve/slide = 6.5 notched

Results:
Great torquey power which will happily lug just at idle all day and then respond crisply when required. Nice meaty (read fun) hit of mid-range power which builds and explodes into a screaming top end. With the 180 main and needle in clip 3 it was slightly rich throughout the needle/main jet circuits so smoothed the hit somewhat. This came at the expense of fuel economy: 5.2l fuel used for 35k's = 14.8l per 100k's.
I swapped to a 178 main and needle in clip 2. The awesome torque is still there but it now has a ridiculous hit into the mid and top end. Its fun and would be a good MX setup, but it is really hard work through tight trails. Better fuel economy but still not as good as I'd hoped. Used 2.9l for 23k's = 12.6l per 100k's.

I think I'll move up to a W diameter needle, the modded carb seems to like a leaner diameter compared to the std 36mm.

 

[hamilton]

2012 xc 200

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Bike year & model = 2012 XC 200
Temperature (degF) = 40F
Elevation (feet) = Sea level
Main jet = 172
Pilot jet = 45
Needle & notch = NOZH 2 from top
Air screw setting = 3/4- 1 turns out
Throttle valve/slide = 6.5
Pre-mix 40:1
Results:
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No engine mods, AS 1 Carb. This setting works very well for me fine tune with air screw for best off idle power.

 

[n_green]

Bike year & model = 2011 EC300E fitted with 36mm x 39mm oval bore modified Keihin PWK ASII carb and reed block spacer and fitted with modified head (squish - 1.28mm, compression ratio - 12.7:1)
Temperature (degC) = 15-20 degC,
55% - 75% humidity
Elevation (feet) = 3000f, or 1100m.
Main jet = 175
Pilot jet = 45
Needle & notch =JD Red #2
Air screw setting = 1.5 turns out
Throttle valve/slide = 6.5 notched

Results:
Great torquey power which will happily lug just at idle all day and then respond crisply when required. Nice meaty hit of mid-range power which builds and revs nicely into a smooth top end. This needle is a good single track needle as it is really smooth throughout the range with no abrupt buildups of power. Fun can be had at the flick of the clutch however.
Used 5l for 50k's = 10l per 100k's.

 

[theexception_03]

2004 EC 250

Sea level to 1000ft
Dry climate

NEDW #2
175 main
40 pilot
A/S 2

Pulls hard in every gear, very strong 1/2 to wot, never fouls the plug even when riding slow in the tight stuff
no flat spots or bogging, best setting I have every had

 

[adv rider]

2011 xc250 wa state

38mm AS 2
n3cw #2 w/ shim
42p
180m
8.7 float height
air screw 1-2 turns depending

 

[Simmo737]

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Bike year & model = 2013 EC300R with the new cylinder arrangement 38mm AS2 east coast australia 98 fuel.
Temperature (degC) = 10 to 30 tested at 24
Elevation (feet) = 0 to 3000' (tested at 500)
Main jet = 178
Pilot jet = 42
Needle & notch = N3CJ 3 from top
Air screw setting = 1.5 turns out
Throttle valve/slide = 7
Pre-mix 40:1 maxima k2
Results:
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Great all round jetting thanks to jakobi. 3.7 litres for 42.5 km on speedo, 37 km on GPS. Mainly tight single line single track ( cessnock rut fest)

 

[Jiikoo811]

Bike year & model = 2008 300 EC
Temperature (degF) = 5-25 'C (no idea what is 'F values)
Elevation (feet) = sealevel
Main jet = 180
Pilot jet = 45
Needle & notch = stock needle, one pos. leaner than middle pos.
Air screw setting = 1 round open
Throttle valve/slide = stock #7

Doma pipe and bigger PV-cover.
S3 high comp. head.. squish 1,15mm
Run clean and crispy, idling well. Idle start pinging if opened air screw more...quite cold weather still here Finland +5'C.

 

[bally123]

Bike year & model = 2005 250 EC
Temperature (degF) = 5-25 'C
Elevation (feet) = sealevel + 1000ft
Main jet = 180
Pilot jet = 42
Needle & notch = DDK - 3.
Air screw setting = 2.25
Throttle valve/slide = stock #7

Way way way better than std NE1f, Crisp and strong throughout. Fuel economy is excellent - way better than it was. A really good and cheap improvement (about ?6 + postage for the needle)
(Tried a 45 pilot but light throttle got sputtery and air screw was fully out - the 42 improved it.)

Was given and have just fitted a JD Blue ready to try next time out.....Thanks again go to Todd for this

 

[n_green]

Bike year & model = 2011 EC300E fitted with 36mm x 39mm oval bore modified Keihin PWK ASII carb and reed block spacer and fitted with modified head (squish - 1.28mm, compression ratio - 12.7:1)
Temperature (degC) = 15-20 degC,
55% - 75% humidity
Elevation (feet) = 300m.
Main jet = 178
Pilot jet = 42
Needle & notch =N3CW #2
Air screw setting = .75 turns out
Throttle valve/slide = 6.5 notched

Results:
Great torquey power which will happily lug just at idle all day and then respond crisply when required. Nice meaty hit of mid-range power which builds and revs nicely into a smooth top end. The transition into the mid-range is pretty abrupt and can make technical trails and hills interesting. This jetting was rich throughout the circuits once the needle got on the taper and it showed in the fuel economy.
Used 9.3l for 63k's =

 

[Novascotiarider]

'12 ec250e with ASII 38mm. I have been playing with a JD jet kit.
10-20C degrees
Sea level - 1000ft.
40p
180M
JD red 1 down from center.
A/S 1.5-1.75 turns out
Just changed from a 45p and JD blue, 1 down from center. Was too rich before and was fouling plugs with a bad bog past half throttle. New setup is better but I think I have to go leaner with my Main as I still have a bog when hard on the gas...Works great in the tight stuff. Bog is only evident on open trail or when on the street when I get a chance to open it up.

 

[ribmtrider]

2003 ec250

In North Central WI.

Bike year & model = 2003 EC250
Temperature (degF) = 50-85
Elevation (feet) = 800ish
Main jet = 182
Pilot jet = 40
Needle & notch = JD Blue, 1 down from top (#4?)
Air screw setting = 2-1/2
Throttle valve/slide = #5

Results:
Runs clean all through range, doesn't have a big hit, just lots of good clean power. Idle is a little rough, depending on temp.

Tim

 

[bally123]

Having finally sorted my carb problems (leaking jet block - see my other posts) I now have two set ups that work well

Bike year & model = 2005 250 EC
Temperature (degF) = 5-25 'C
Elevation (feet) = sealevel + 1000ft
Main jet = 180
Pilot jet = 40
Needle & notch = DDK - 4.
Air screw setting = 2
Throttle valve/slide = stock #7

This is my favorite setting, Needle #3 to lean - idle hangs a little after technical stuff, but clip 4 is perfect. Hit is smooth and really easy to control in tech stuff & slippy conditions. Fuel consumption also very good.

Bike year & model = 2005 250 EC
Temperature (degF) = 5-25 'C
Elevation (feet) = sealevel + 1000ft
Main jet = 185
Pilot jet = 40
Needle & notch = JD blue - 3.
Air screw setting = 2.5
Throttle valve/slide = stock #7

This is much harder hitting - wheelies are almost too easy, strong power everywhere. Spluttery low throttle in the tech stuff and feels to rich. Throttle response is however great. Next time I ride a mx track or enduro I would try this set up. Much heavier on fuel compared to the 1st set up.

 

[n_green]

Bike year & model = 2011 EC300E fitted with 36mm x 39mm oval bore modified Keihin PWK ASII carb and reed block spacer and fitted with modified head (squish - 1.28mm, compression ratio - 12.7:1)
Temperature (degC) = 14 - 18 degC,
65% - 80% humidity
Elevation (feet) = 1000f, or 100 - 300m.
Main jet = 175
Pilot jet = 45
Needle & notch =JD Red #2
Air screw setting = 1.25 turn out
Throttle valve/slide = 6.5 notched

Results:
Good torquey power though as the day got on and the temp dropped it became a bit flat off the bottom, despite having a 45 pilot in there. Once on the needle it felt good, had good strong power throughout the rev range, though felt rich from 1/8 throttle onwards. A user friendly and forgiving needle for tight single track, only downside as mentioned is the lack of torque off the bottom (it still has oodles of torque, just required a bit more clutch to smooth it out).
Also the fuel economy as is normal with my bike for some reason is poo.
9.8l used for 83k's.

 

[hannesd]

i got a CCL needle with clip pos 2 (from top) 45 PJ and 180 MJ.
temp 5-20 Celcius and 0-100 m elevation (sealevel, belgium)
idles pretty wel and runs very smooth, very well controlable.
starts 1st kick when warm, cold takes max 3 kicks.
absolutely pleased with this setup.
no head mods have been done (yet) just might use a thinner base gasket to up compression a bit next time if i shoud (ever) swop piston

EDIT : so now i've put a new piston in it ,and left the base gasket OUT (more compression, better squish from 1.82mm to 1.32), i used permatex (liquid gasket).
after some rides (0-5 degr Celcius) it felt too rich off idle, so i swapped the 45PJ for a 42 and that seemed to make a huge difference. much more crisp engine response thrueout the revs!

RE-EDIT : since it got a little warmer, about 10-15 deg Celcius, i put an even smaller PJ in, went to 40.
yet even better idling.
just have quite some spooge, does this mean i'm either running too rich on the main (180) or i'm not revving it enough (no need to for what i do).
might try 178 MJ...

any thoughts on the spooge?

 

[n_green]

any thoughts on the spooge?

This thread is a database for others to view people's jetting setups so discussion doesn't really take place here. There are plenty of threads re spooge and what it means but essentially it just indicates your oil of choice isn't reaching its flash point and burning off prior to escaping via the exhaust port. Could be due to running rich could just be that you're a lugger using less then half throttle all the time could be you're using a race type 2 stroke oil with a high flash point which you'll never reach trail riding.

For more discussion start a new thread or search for precious ones there are heaps.

 

[bluespark]

Started with the following from PO, supposedly jetted to 5k' ft.

2011 ec300e
PWK 38
60-90F
Where I have ridden is 6-11k' ft
180 main
40 PJ
N3EH needle, middle clip
#7 slide
As my first modern 2t I was quite surprised at the instant, abrupt power. Against everything I had read , it was difficult to crawl up steep tech sections without spinning out and was easy to stall. 2nd gear was tough to use at slow speed. pulled the plug and the electrode was black, and had a oily film coating to it.

My new carb set up as suggested by Motoadventure, local Gas Gas dealer.
168 main
38 PJ
N3CH needle middle clip
#7 slide
installed new plug.
I rode Lefthand Canyon today and noticed a world of difference! 2nd gear was awesome in slower tech sections and stalled a lot less. The light switch power was muted to a much more useable power.
I have not touched the air screw yet, but may play with it for fine tuning. I was also thinking of dropping the needle one clip to see if it helps

 

[CampX]

I just got my '05 EC300 couple months ago, in really good condition, and am in the process of finding out its characteristics. Finding it a little boggy off the bottom. So today I finally hade time to pull the carb and check out what the set-up was.
I ride at 3500 to 6600 feet. I found a 178 main, a 48 pilot, and unknown ID on the needle (stock maybe?). I'm guessing this is a lot rich for my conditions! Will update as I tinker more with it......comments welcome!

 

[wa_ndro]

2013 300r AS2
178m 42 pilot AS 1.5 turns out.
Yamaha N3CJ clip 3.
Standard BR8 plug and 50:1 Motul 800.
Generally 15 - 20 celcius @ ~320m.

My bike is a 2013 300r in Australia with about 5hrs on it and this setup is fantastic, heaps of power and leaves the plug golden brown.

 

[Simmo737]

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Bike year & model = 2013 EC300R with the new cylinder arrangement 38mm AS2 east coast australia 98 fuel.
Temperature (degC) = 10 to 30 tested at 18
Elevation (feet) = 500 to 800'
Main jet = 175
Pilot jet = 40
Needle & notch = NEDW 2 from top
Air screw setting = 2.25turns out
Throttle valve/slide = 7
Pre-mix 33:1 maxima super m
Results:
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I went to this jetting coz the n3 needle is great fun but at a bit of a cost, as I got used to the bike and tried to put the heat on the mate I generally ride with up at cessnock, what i needed was a more jd setup that was 'no alarms and no surprises'. The jd red i started with was a meek versionof e n3. I wanted better, dare I say it, ktm ish delivery.

I could never make a NEDW work on my previous bike, with a 36mm carb/6.5 Notched slide it just didn't work ( insert n green experience here). But with the 13 barrel and 38mm as 2 , the NEDW works great in a greasy/grippy cessnock ..the bike has just as much bottom as the n3, but a more linear delivery, with less runaway onto the pipe, you can truly dial in power with the ne suzuk needles, something I got close to with the j blue needle on my 2011, but I've GOT on my 2013 with the ne needle: that twist/rate and power relationship that's quite 4t, with all the fun noise and etc that mmakes 2ts 2ts.

Edit: it's a bit fluffy right off the bat so I'm going to try nedj with everything else the same.