• 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     WR = 2st Enduro & CR = 2st Cross

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250-500cc Just bought a 2014 WR300. What carb/jetting?

OUMX117

OUMX117

Husqvarna
A Class
First off I'd like to introduce myself. I'm a long time MXer and Cross Country racer. I just came across a deal I could not pass up on a 2014 WR300. The bike has never been ridden in the dirt. I have been reading a great deal about these bikes and it seems like the jury is split between the JD jetting kit, Lectro carb, and Kehin Airstriker. I am located in central Oklahoma and my normal elevation is around 1050ft. However, the main reason I bought this bike was for our annual trip to Colorado. While on the trip we see a base elevation of around 8900 and a peak of around 12,300. What would be the best setup to handle both of these changes? I should probably ask: if any of you regularly ride at high elevation, what is your setup and are you happy with it? I don't want to spend the $$ on a JD kit if I will not be able to make the machine happy at elevation. I would prefer to just rejet the stock carb or use the air striker. I have installed an airstriker on a 2003 Honda CR250 with great results so I'm leaning that way currently. Help me change/make up my mind.


I appreciate the help

PD
 
I was concerned about fitment as putting Keihin on my old Honda CR wasn't very clean. I dunno how JD would do at your elevation but I live at sea level and rode up to 5,500 elevation yesterday. Following JD's guide I was good but a smidge too rich (based on spooge and less than clean off idle). One needle clip higher and problem was solved. The mikuni TMX has a better top end pull than the Lectron IMO but plenty down low for grunting around alpine mtn trails.
 
If you are going to keep the stock carb, buy the JD kit. Then you will have the right needle jet and both a lean (high elevation) and rich (low elevation) needle, and you will be able to run a leaner pilot jet, and have the bike start a lot easier. I got my 300 to run pretty good with the stock jetting, but didn't want to risk a lean condition by dropping the pilot any lower than a #40. Also, had poor starting. With the kit, I have great and reliable performance, plus easy starting.:thumbsup:
 
(disclosure, I sell Lectron carbs)

The Lectron is the most flexible carb for elevation and temperature changes I have ever used. Runs exactly the same in 29-95 degrees and 50-8600 feet elevation in my personal testing. WAY more flexible and better running across that range than any jetted carb I have ever used. Better MPG, better response, smoother powerband, super EZ to adjust once you understand it, etc. I'll personally not be running anything but Lectrons on my bikes as I just love what they bring to the table. I just got done designing a custom rod to extract the most out of 250-300 class bikes and it works very well. On my personal 250 I am getting far better response, power, and 8-10 MPG better!!! If you have the money IMHO get the Lectron especially give the wide range you need to cover and save yourself trail side rejetting or a really crappy running bike that might fowl plugs at the higher altitudes. The standard carbs can be made to work well but in my experience not as well as the Lectron, not as flexible to changes and the Lectron gets you better milage, sometimes WAY better. I got 22 MPG with the stock carb on my personal 250, 31 MPG with the Lectron while making more power.
 
I had an 09 WR 250/300 with a modified Mikuni TMX. I could never get to idle right but it did have a good mid range and top but most my riding was just off idle. I ordered a 36mm Lectron and once I learned to tune it my bike ran better than any 2t I've ever owned.My rides start at 1000 ft and go up to 5800 ft ant the bike idles and pulls from a lower rpm than the stock carb. When I sold the bike the carb came off and went on to my new Beta. Even the guy who bought my old bike ended up buying a Lectron for it and is satisfied with the results. I'd put my money on the Lectron every time because that's what works for me....
 
Kelly what sort if mpg you get on a 250/300 at east fort rock? My tmx with jd and adjusted float got 33 mpg but this is a highly unusual style of riding for me. Ride taneum last weekend with one clip richer on needle (mistake) and got 26 mpg which is more indicative of my typical riding terrain.
 
The way I see it is you really only have 2 options:

1. Try the JD kit for the stock Mikuni, knowing that that carb can be very sensitive to temperature, humidity and elevation.
2. Go with the Lectron (I would go for 38mm).

Spending money on the Keihin, at this point in the carb wars, just is silly to me. I've got one sitting in a box somewhere, along with an R&B modified Mikuni. Neither of those setups satisfied me. But the Lectron experiment was just getting started. I picked up one of those early on and wouldn't go back. I've got one on my brother's WR144 now as well. So, yeah, it's 2 options, try the JD kit and maybe be happy, or try the Lectron and maybe be happy (there have been a few who didn't like them).

Personally, I would just go ahead and order a Lectron and be done with it.



Will you be racing the BJEC at the Stillwater 500 on the 22nd? If so, I plan to be there, and you could give my bike a test ride, but as fair warning it's a CR250 at the moment.
 
How does the Lectron stack up as far as size, front to back? Is it much longer than a Mikuni like the Keihin is?
 
PowerKord said:
How does the Lectron stack up as far as size, front to back? Is it much longer than a Mikuni like the Keihin is?
Click to expand...


Nope, they're machined to match the size now. I have the pre-machined version and it seems easier than the Keihin was to mount, but is still slightly longer than the Mikuni. Kelly probably knows the specifics, but I only had issues when I switched shock springs. As the Racetech one I put on is larger around than the stocker. I usually have the whole subframe pulled off when I remove the carb though, because it means I'm pulling the engine. No need to remove it to adjust the rod.
 
shrubitup said:
Kelly what sort if mpg you get on a 250/300 at east fort rock? My tmx with jd and adjusted float got 33 mpg but this is a highly unusual style of riding for me. Ride taneum last weekend with one clip richer on needle (mistake) and got 26 mpg which is more indicative of my typical riding terrain.
Click to expand...


I ride my 511 at EFR. At Taneum a few weeks ago I got 32 mpg and was riding a pretty good pace. Stock it got 21-22. Crazy huh? About 10 MPG with the 3-2m rod. plug looks perfect. Good for 100+ miles with that bike now. yeeeehaaaa.
 
PowerKord said:
How does the Lectron stack up as far as size, front to back? Is it much longer than a Mikuni like the Keihin is?
Click to expand...


We do a gob of changes. Machine it down as far as it will go (still a few mm's long but fits great), some custom rods, viton bowl gasket (to keep from pressure washing water into the bowl), relocated overflow lines, remote choles where needed. Spent the last year massaging these. Getting really good at tuning the last bit out of them too. My CR250 is FAST and funny thing is it needs a piston and pipe :D
 
I read all these stories on bikes out here and just dumbfounded ... I've got a 1 kick starting, 250cc 08 WR250cc Husky ... Its screams in what I'd call 2t fashion. Apparently, the only ~perfect ~stock bike made :)

Good luck with your bike ... :)
 
Where did the OP go? Hope we did not scare him off.

ray_ray said:
I read all these stories on bikes out here and just dumbfounded ... I've got a 1 kick starting, 250cc 08 WR250cc Husky ... Its screams in what I'd call 2t fashion. Apparently, the only ~perfect ~stock bike made :)

Good luck with your bike ... :)
Click to expand...

The standard carb can work fine and be rejetted for his needs. Many good suggestions about the JD jetting etc. Some options to choose from. No harm in info, he asked.
 
Motosportz said:
The standard carb can work fine and be rejetted for his needs. Many good suggestions about the JD jetting etc. Some options to choose from. No harm in info, he asked.
Click to expand...

Yep and every new bike is gonna need some re-jetting ... I go from 0 to 3,000' sea-level and no real issues ... I'll see what is in my CARB if I remove it again ...

Probably a good thing on the new bikes as all these older bikes are still being sold and should last quite a while into the future from the purchase yr ...
 
ray_ray said:
I read all these stories on bikes out here and just dumbfounded ... I've got a 1 kick starting, 250cc 08 WR250cc Husky ... Its screams in what I'd call 2t fashion. Apparently, the only ~perfect ~stock bike made :)

Good luck with your bike ... :)
Click to expand...

I"m running the original TMX on my bike and it screams. But I have had some episodes where it acted funky. I tried the PWK, didn't like the fit and never got done jetting it before returning to the TMX. I do have my eye on the Lectron if need be. Sounds like a winner!
 
Thank for all of the opinions guys!!! I went with the JD jetting kit for now after spending some time on the phone with them. I am going to give the stock carb with JD jets a try this year in Colorado and see how it does. I will be taking a few extra bikes with me that have all made the journey before and I know how to jet them. If I can't sort the new husky I'll pull the old bike out a run it. Looking forward to learning more about these bikes and getting it set up for my height/weight/riding style
 
Just my $.02, I use a JD kitted tmxx. I liked it better than the PWK I borrowed for my riding, high speed dessert trails. In fact I finally geared it 14X47 to get it where I liked it. I get 50+ miles on stock tank without hitting reserve. So for my style I like the Mikuni. That being said the one time I went rock crawling, between the dragging clutch and the carb not idling well, I might have called her a bad name or two. That's just not the normal riding type for me. The bad thing about high speed dessert is I ran out of talent in January and broke tib, fib, and ankle. I miss riding. Maybe soon :cry:
 
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