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 The previous version was outdated and no longer supported.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

430 air cooled head mod.

I'm having the squish area machined on my 500 because it's flat, promoting an area for detonation. Are you talking about machining the combustion chamber to extend to the sealing area?
 
No, just removing the sealing land so it transitions smoothly into the combustion chamber with no step.My current squish measuring with solder is .090.
 
highdez1981430cr;81770 said:
No, just removing the sealing land so it transitions smoothly into the combustion chamber with no step.My current squish measuring with solder is .090.
Click to expand...

I'm machining mine 2 degrees. to direct combustion more into chamber. Suppose to help alot with detonation prevention.
 
highdez1981430cr;81841 said:
At 2 degrees how wide is the sealing land after lapping the head in?
Click to expand...

Its from the inward edge of the sealing land towards the combustion chamber.
 
Exactly, so when you lap the head to the cylinder how wide is the area that is acually sealing?

Is it the full width of the cylinder sleeve?
 
highdez1981430cr;81853 said:
Exactly, so when you lap the head to the cylinder how wide is the area that is acually sealing?

Is it the full width of the cylinder sleeve?
Click to expand...

Yes it is. My machinist actually asked me about machining a "o-ring" on top of the cylinder for better sealing.......? Something to think about if it was a problem. I'm going to use a decompression valve also. I used them on my Husky chainsaws when I was logging, they work good.
 
Are you going to use the Vulcan Valve?

O-ring plus lapping,HMMMM

Sounds like a wining combo to me.

Do you have any pics of the modified head?
 
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