• 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 The previous version was outdated and no longer supported.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 Is WR300 racing head a good choice?

Measure how much squish you have as standard.
I have mine set at 0.55 thou i took nearly a 0.70 off my head but i had to resess the dome into the cylinder too get the 0.55.
Its simple when you understand it and any engineer worth a bean can turn the head flat
Its reprofiling the head if its needed thats the issue.
 
Rob578 said:
RB Designs can do the head but I opted for the race head. Think I paid around $120 for it.

My stock compression was around 135psi and went to 170psi with the race head. I just put a new piston and rings in it and it feels like a very notable increase in compression so I plan on checking it again this weekend.

Excellent mod for the money
Click to expand...
My WR250 from 2006 gets me to 215 psi... using a compression tester by innova. I kicked it about 10 times until there was no more increase on the measurement:
 

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Eagle freak, thats how my 360 head looks but not as exaggerated my lip sits in my cylinder about half a mill.
That was to get comp up to a satisfactory level.
 
that was the wrong picture, and a typo. My highest measurement was 210 psi. That one shows 205, not 215. And even with that high compression I still have a hard time starting it when it is cold.
 
Loco said:
that was the wrong picture, and a typo. My highest measurement was 210 psi. That one shows 205, not 215. And even with that high compression I still have a hard time starting it when it is cold.
Click to expand...
My WR250 has 205 psi. as well, your hard start warm once it's already been started is likely from a lean pilot. If it's a cold start problem it might be the fuel you're using or spark plug.
 
lankydoug said:
My WR250 has 205 psi. as well, your hard start warm once it's already been started is likely from a lean pilot. If it's a cold start problem it might be the fuel you're using or spark plug.
Click to expand...
It starts just fine after it has run for a few seconds. It is the cold start I'm having trouble with. The last time I try it had fuel that was about 4 weeks old, but I never tried with a new spark plug. Hope it is something as simple as that. Thanks for the advice, I really appreciate it.
 
Loco said:
It starts just fine after it has run for a few seconds. It is the cold start I'm having trouble with. The last time I try it had fuel that was about 4 weeks old, but I never tried with a new spark plug. Hope it is something as simple as that. Thanks for the advice, I really appreciate it.
Click to expand...
I had to put a new spark plug in about once a year because a lead coating would build up on it from the vp110. Pump gas doesn't burn a clean especially if it's old so I would guess it would go through more spark plugs from fuel varnish fouling the plug when it sits in the garage.
 
I think I know the reason for for my hard cold starts. I opened up the carb for the first time since I bought it and I found out that it has a 400 main jet and a 15 pilot jet. I noticed it was hard to start when the temperatures started to drop. I changed the spark plug and put new fuel in, and it was hard to start, but I got it running after a few minutes. I will jump to a 35 pilot and see if there is an improvement. Thanks!
 
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