• 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 The previous version was outdated and no longer supported.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 leaking head bolt washers, replacements??

S

sooper_arthur

Husqvarna
AA Class
ive got a leak on one of my head bolt washers, they are a thick steel washer with a special shaped oring in the center of it. the husky ones apear to be $5.25 each?! so im not going to buy those, whats everyone do for replacements?

i assume i can find a round oring that will squish to seal the leak, but wanted to check to see what everyone has done first.

this is the oem no. 8B0064988
 
You can't just put an o-ring on top of them, the factory washer is set up so that the o-ring seals BOTH sides.

You might be able to cut the factory o-ring out with a razor and just put a new one in there loose. If you take a couple measurements, you ought to be able to get new o-rings for an industrial supply house.

All that being said, since the new washers are only $5, it seems unlikely that it's worth the trouble unless you happen to have a drawer full of o-rings already.
 
there shouldn't be coolant getting too your head studs in the first place right??????
excuseme.gif
what model bike are we dealin with?
 
troy deck said:
there shouldn't be coolant getting too your head studs in the first place right??????
excuseme.gif
what model bike are we dealin with?
Click to expand...


That's a good point. The bolts are between the two sealing o-rings on the head, but when torqued it should but pretty well sealed. I suppose it's possible, but seams odd...

Anyway, I'd go with copper washers. The Husky new Huskies are the only ones I've seen with this odd ball o-ring inset washers. My KTMs and Kawasakis all used copper.
 
troy deck said:
there shouldn't be coolant getting too your head studs in the first place right??????
excuseme.gif
what model bike are we dealin with?
Click to expand...

Considering that the head bolts are right in the middle of the coolant passage, it seems pretty likely that coolant will be getting to them. The odds of two metal surfaces sealing against each other are pretty much zero; that's why we need to use o-rings between the head and the cylinder.

Copper washers ought to work fine, but o-rings are good enough for a ton of other places (like head to cylinder), so they are good enough for the head studs for me. Probably just need to replace one that got pinched or something.
 
umm heat the copper washer till they glow red and let them cool down this will make them softer and seal between the bolt shoulder and the head surface.
how clean are the surfaces?
 
I was thinking a round oring in place of the crazy 8 sided oring. The right sized one would most likely seal but perhaps too much messing around. $5.25/ea. **************************************** From my understanding.

So I'll use coppers from any bike. 8mm. Oil lines off a yz450 I have around. I will anneal them and copper cost them.

And yea the bolts just hang out in the coolant passages. I'll manufacture finned headed bolts, sell them as extra cooling capacity. Hahahaha.
 
sorry im not familiar with teh 8sided o ring, if its anything like the bently dowdy seals they are one shot wonders.
 
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