2015 250 jetting NEDW

[adriano.ro]

N2ZJ@2 Is super lean on middle. Today I will try N3CW @4 and N2ZJ@3 but with 175. I will post the results here.today I spoke with my friend and he got N8RW,just to se if that helps. N8RW @3 is like N2ZJ @2,5 right?

[Jakobi]

Originally Posted by adriano.ro

N2ZJ@2 Is super lean on middle. Today I will try N3CW @4 and N2ZJ@3 but with 175. I will post the results here.today I spoke with my friend and he got N8RW,just to se if that helps. N8RW @3 is like N2ZJ @2,5 right?

Yep!

I often found a similar thing with the dual taper needles. They always feel a bit lean in the mid range. OK off the bottom, OK on the pipe, but a bit of a hole in the middle. The Suzuki NE needles have a 3rd taper that fills this void. Makes the power delivery more linear and less of a transition, and also supply much more fuel on the needle past 3/4 throttle (smaller main needed).

[adriano.ro]

First thing, I have found NEDW tomorrow is here.

So I have tried 42 n3cw@4 180. Too rich on needle,main ok. Bad idle also. Next I have change needle on @3,way better idle,bike take revs on neutral very clean,no bog. No road test ,was too late.
What I found was a small hole and bad conection on cab rubber tube between carb an reed valve.
So, if tomorrow I have improvement with this needle but is too soft/lean on @3 I have to change it with N3EW @4, right?

I can't wait to try NEDW

[Jakobi]

If N3CW#3 is too lean, N3EW#3 will be the same as N3CW#3.5

[adriano.ro]

For now I tried n3cw@3 42 and 180. Is super quick, too quick , with good bottom. But after some investigations,tests I finde my real problem: choke ! Is mounted on handlebar, and isn't seal perfect on carb body. After some hard parts was unscrewed, and the bike fell super rich. Before trying any other needle I need to change the choke system.

[Jakobi]

Ahh the suspect choke!! That'll give you some strange inconsistent results for sure.

I think you'll find 40/42 N3CW#3 178-180 should be pretty close.

Too quick!! Neverrr...

[adriano.ro]

When I say too quick I mean is very responsive and really brutal on high revs. Is fun but on frozen terrain isn't good idea. Can I do wheeles on 3/4 part of throttle easily,with this set up you can win some motocross contests ))

But,tomorrow arrive my NEDW,so I'm focus on this needle.

[adriano.ro]

So, I have changed my needle with NEDW on second grove, 42p ,175 main temp ~3?C-5?C alt. 400m-1300m. So far ,so good. I have to play a bit with air screw for best response, otherwise the bike super clean and hard. I like it! Very nice top end power. If now runs ok on second grove, on summer I need to go on first or cam I change only the pilothe jet? Or like my friend on his his husqvarna wr 250 2t 2004 ,he just play with air screw.

[Jakobi]

Given the cool temps you could try going a clip richer and seeing what you think.

I ride year around on the same jetting and usually see temps between 15-35C and lots of humidity. 200-1000M.

[adriano.ro]

After some rides bike runs good. A lot of bottom end ,good midle but I feel a bit to soft on top end,like too lean on man jet. My curent set up is 42 nedw@3 175 as 1.1/4 out. Isn't too big 178 main jet,will help this to have a bit more top end? With N3CW was oposite ,nice top end but not so good bottom end.