• Husqvarna Motorcycles Made In Sweden - About 1988 and older

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 The previous version was outdated and no longer supported.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

Slipped Liner

RTM

RTM

Husqvarna
B Class
My 88 WR 250 seized on me today, second lap into an event. Having just pulled the barrel of I found that the liner had slipped down a few mm allowing the ring to pop over the top, resulting in the top ring being ripped off.

Only thing I can think of is she got to hot but the radiators were still full to the brim.

Any idea's?
 
Took the head off (didn't want to as head gasket are not available) and the top hot of the liner has sheared off allowing the liner to drop..

What to do.
 
If there is no damage to the head you may get away with having the cylinder resleeved and get a new piston and ring set. You should figure on flushing your crankwell to remove any fragments that may have ended up down there. I personally would split the cases and check the crank for damage as well. I wonder if your liner had been work hardened perhaps and became brittle.
 
Yes a strip down and flush is a must do although it all looks just fine down there. The bike has down very low hours since new and is still on it original piston and probably rings (maybe chain and sprockets even) no evidence of the piston nipping up and pulling the liner down the bore. bit of a mystery. Bl@@dy shame as it was going and sounding fantastic.
 
Check on eBay for tritrophy Search for husqvarna gaskets and you will find his store. He had them when I got my centercase and base gaskets last month
 
Found it - Thanks. Just need a new piston and liner now. Think I'll make a liner.
 
The sleeve may have developed a stress crack in the corner where the flange intersects with the outside sleeve wall. Then the aluminum cylinder got hot enough to expand and allow the sleeve to pull down from the flange
 
I wondered the same, however a few years ago I warmed a cylinder in the oven in order to paint it pot black and the liner fell out when I took it out of the oven so the aluminium clearly expands a greater amout than the liner and actually lets go rather than pulls it.

But the bike did get a little warm a couple of miles earlier before it let go so something happened that's for sure. No water loss though - ziltch !
 
RTM said:
Yes a strip down and flush is a must do although it all looks just fine down there. The bike has down very low hours since new and is still on it original piston and probably rings (maybe chain and sprockets even) no evidence of the piston nipping up and pulling the liner down the bore. bit of a mystery. Bl@@dy shame as it was going and sounding fantastic.
Click to expand...


They always go great just before they let go:eek:
 
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