• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

  • 2 Stroke Husqvarna Motorcycles Made In Austria - About 2014 & Newer
     TE = 2st Enduro & TC = 2st Cross

TE/TC SX head and CDI?

S

sthomps

Husqvarna
AA Class
I keep reading about people putting SX heads and the CDI box on their 250 xcw and TE250 husabergs and loving it. Just wondering if anyone here has done this mod and if they think it's worth it for the tight woods riding I do?

I don't get why they would put such mellow low compression heads on the trail bikes, or why give the trail bikes less bottom and midrange. Emissions thing or something? I personally like the MX style power and gearbox but bought the TE for the lights and suspension (although it may get a revalve anyway).

Cheers

Sam
 
I have a '12 Husaberg TE250 and I did XC head modified by Mike S/Cycle Playground and XC CDI. I run red PV spring, with one turn in of preload. Improved bottom and mid. It works well for me, but if you want it snappier, go SX.
 
calling on the man from Wales. Our crew member Dai is an expert/has high level of knowledge on SX head/ignition plug and play stuff with KTM 300/250 engines. I put out a message to him join the Cafe for valuable input, he not only has years of trials and research/devel but is super smart and logical MS level guy (and much more). R
 
Just the head , no cdi . Lots more snap on the bottom and midrange. No noticeable loss of topend and the electric start works the same. I thought the stock gearing was a little tall before in the tight stuff , with the extra grunt it is really good . I experiment with the red power valve spring but ended up going back to the stock yellow.

image.jpg
 
This is really evident and all goes along with the very personal set up desires of each of us..
truth is my path takes me to a very 4T like power for my 2T. My last 2T was the KTM250EXC I had the thing so smooth, like electric.
Thats where my TE300 is going and is 99% there with alot less work than the last KTM engined bike.
Softy smooth power for me guys. (FMF Gnarly,Turbine core 2, Snap intake splitter, JD jetting, the rest OEM= soft smooth, zero "hit")
Tim that head sure is cool looking and I remember when the Italians first started making multi insert chamber 2T heads cool stuff there. ( I love 2Ts, the mods are so easy and very effective, with instant gratification)
 
OK from Dave- I love technology.......got back to me in minutes

On my way to Milan at 35k feet so will see what I can do but basically the
14 bikes got a new head with much improved design so the SX and modded heads have less effect. On older 08-13 with current engine design the SX head increases compression and gives cleaner burn giving mainly an improved bottom end response and some improved mid range so in effect smoothes out the "hit", secondary effect is with improved burn is easier jetting as more consistent and less susceptible to altitude/temperature fluctuations. And you can run premium 91 octane at sea level in cold with no detonation with stock SX or lightly modded XC head, at higher 5k+ altitude and / using race gas a modded SX or highly modded XC head will give even more gains.

But then you add in jetting variations and you can create huge differences in performance.

Biggest impact for a clean jetted bike though is with silencer, powercore2 or turbinecore2 transform the bike with more power and faster response everywhere compared to stock.

The head to me is a no brainer on older bikes.

The PV then has next most impact, both spring and color and preload. As with the head a more aggressive setting with PV opening sooner and faster with red spring flush actually smooths out the hit.

The lastly the ignition, going to the soft map slows the rate it revs so is good for improved traction in slippy conditions. Using the 250SX CDI does the opposite and it spools up faster so SX hi > SX lo = XC hi > XC lo if that makes sense.

Will think more and try and join in when I get a chance.


David
 
I guess the ultimate test for me will be to ride me one friends '14 250sx back to back with my bike. I'm starting to think its not worth changing heads. It would be one thing if I wanted to run a high compression one and race gas, but I want to stick with pump gas.
 
The S3 head comes with 3 inserts , Sx , Xc , stock . The Sx high high compression head as they call it doesn't require race gas on my bike .
 
Apparently its next to impossible to find a dealer in Canada. Only dealer is the GasGas distributor and the Slavens Mule SX heads may not work as I generally split the 6000ft range that they come in. Need a 3000-9000ft head and the 0-6000ft haha.
 
I added a SX250 2014 cdi to my TE300. Really strong off idle but still seems to find traction. I think this is a great mod with head mod for trail riding. Sent my head and cylinder to Cycle Playground for mods. Will give up dates when the bike is back together.
 
robertaccio said:
This is really evident and all goes along with the very personal set up desires of each of us..
truth is my path takes me to a very 4T like power for my 2T. My last 2T was the KTM250EXC I had the thing so smooth, like electric.
Thats where my TE300 is going and is 99% there with alot less work than the last KTM engined bike.
Softy smooth power for me guys. (FMF Gnarly,Turbine core 2, Snap intake splitter, JD jetting, the rest OEM= soft smooth, zero "hit")
Tim that head sure is cool looking and I remember when the Italians first started making multi insert chamber 2T heads cool stuff there. ( I love 2Ts, the mods are so easy and very effective, with instant gratification)
Click to expand...


Finally I figured I will write here instead of trying to PM you :) You seem to be like the only person in the world writing about no "hit" and smooth power delivery for this 2t. Don't believe me? try searching in google there are no other forums discussing this topic :) Basically the mods you did are only exhaust related, can this be really achieved with just exhaust mods? hard for me to believe, please elaborate because basing on my experience aftermarket exhaust (in my situation akrapovic) will add considerable grunt in all rev ranges, how does that relate to smooth, no "hit" power delivery? I was thinking about changing the cylinder head into low compression one, any experience with that?
 
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