• 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 The previous version was outdated and no longer supported.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 360 Rebuild question

surge

surge

Husqvarna
AA Class
So... Pulled the motor apart yesterday as the bike wouldn't fire up, took the head off and the barrel was literally full of coolant (little wonder it wouldn't start). Turns out the head has a tiny hairline crack that allows a hell of a lot of coolant through!
As it's pulled down, it was suggested by my guiding hand (an uncle who's a lot handier with motors than me) that I might as well pop a new piston and rings in it. The bore looks sweet and will be fine for a while yet. This just leaves me wondering how I identify the correct size piston to order? I've taken snaps of the numbers on the barrel but I'm not sure if the bore is original etc, I'm a bit lost...a bit of help would be sweet, cheers!
 
The piston crown may have some info on it.
You will have to remove the carbon on top to be able to read the info.
If not measure the piston with a digital vernier.
What bike is it for?
 
You'll need to order a new base gasket (or make one up @1-4mm gasket paper), take the o-ring head gaskets to CBC bearings and they can size up a new set.

Pop the piston off and scrub the top which should reveal the part number and the all important letter type of the piston which identifies the bore size that came out with your 360. the OEM piston is a Wossner and it's far cheaper to buy direct than, unfortunately, the local dealer.

Part No. 8076DA - A Type
Part No. 8076DB - B Type
Part No. 8076DC - C Type
http://wossneronline.com/forged_pis...e=product_info&cPath=50_63_95&products_id=456

Like Ausky said, l would measure the piston just to see if it's tolerance and double check the size in comparison to the Wossner piston range. See my post below:
http://www.cafehusky.com/threads/piston-diagnosis.17196/#post-156823
 
Thanks blokes, muach appreciated. The bike is in Myrtleford at the moment, asked my uncle to throw some calipers over it and to look for some carboned up markings, hopefully I can get the ball rolling shortly
 
Bit of an update, she's back together after some other minor repairs, with a new piston and rings, and is angry as all hell!! I've gone through the run in procedure and she's ready to scare the pants off me.
Cheers again for the help.
 
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