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 The previous version was outdated and no longer supported.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

Over size cylinder

J

Joe Bleau

Husqvarna
C Class
Hello,

If you over bored a cylinder for 0.49mm on a WR240 LC 1985, is it possible the sleeve while crack?
The third over size and last is 70mm on my husky. I put a piston of 70.49 in it. And now the antifreeze goes in the cylinder when i start it, and the pressure go up in the radiator. Is it possible that the sleeve is cracked? And if it is cracked, can it be change.

Thanks
 
More likely Head gasket issues I would think. pretty hard to crack a liner unless it has been bored right through at the thinnest part. its possible that the liner is slightly skewed in the barrel and the boring bar has skimmed it out but any rebore machinist would spot that and let you know.

have you retourqued the head studs? did you use a sealant on the head gasket?


a few things to consider. best get it dried out so the big end doesn't rust.

good luck
 
Hello,

I disassembled my engine and send the cylinder and the head to my machinist. He put it on a pressure bench. No crack on the slive. The head was not flat. He over the head. Now I have to rebuild the engine.

Question: You talk about sealant (silicon) on the head, but if I read in my workshop manual it said that you need silicon on a 400 and 500. Do you still think that I need silicon on the head? I did put silicon on the head this time but not 20 years ago. And when you use silicon on the head it is very difficult to remove it after.

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There are better sealants for the head than silicon but I recently reassembled my 400 W/C without any and it has survived.
try contacting Phil at husqvarna parts .com and see what he recommends. alternatively, Start a new thread titled head sealant, and 50 experts will put you straight:D
 
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