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

  • 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 The previous version was outdated and no longer supported.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!

250-500cc Power valves size

rockdancer

rockdancer

Husqvarna
Pro Class
I assume if I was wanting to go to 250 cylinder from a 300 - Id need new - longer power valves. Correct?
 
ohmygewd said:
LoL...if an '00 250 cylinder fits the 300 l'd swap ya!!
Click to expand...

It does. Bolts right up.


I went from a 300 to a 250, because I trashed the 300 jug, head, and PV. I picked up a slightly used 250 setup for a helluva deal, so I went with it. Thinking it may take some of the edge off and allow me to ride longer with less fatigue. It's definitely a different power characteristic. One I don't particularly care for. It reminds me of riding my ol' KTM 200 too much. Running it hard on the pipe most of the time. Fun in the open, not as much in the tight where lugging would keep the wheel spin in check.
 
my original question still remains though - do you need to use the 250 power valves? I assume so - if they are the same sort of design as 125 .

I bought a 250 cylinder off ebay cheap but no power valves - it was also pick up only so it may not be happening anyway
 
Rockdancer, looking at the parts catalogue for a 2010 WR250/300, the actual valves are different going by part numbers - by how much, maybe give Stefan a call at R&D Husky?
2010Wr250_300PV_Man.jpg
 
thanks a lot OMG - it looks like its shaped to bore so will need to be changed - or will not give as good down low response I guess
 
I guess you'll play with the power valve height, jetting to get you a better response possibly porting mods. If you want to 'rev' faster then you may have to lighten the flywheel but then you'll sacrifice some low down torque.

Dunno mate...if it was me, l'd look for a complete jug from a 250, unless you can track down powervalves from the states?
 
Yep, definitely need the right power valve for the cylinder. That's the main reason I went with the 250 I found. The main piece (#11) got a chunk taken out of it by a piece of the piston when it let go.
 
Looks like I got the 250 cylinder and head and near new piston - it was cheap so its insurance really . May not fit it up.
The guy selling it got an Eric Gore 265 kit for his -

While we are talking about it - Anyone have any 250 power valves and booster valve theyd sell ? :o

Thanks guys
 
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