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 The previous version was outdated and no longer supported.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

Ignition Questions

H

hilz129

Husqvarna
AA Class
Does anyone know the timing settings for a 1979 250 WR and a 1979 390OR? I have a dial indicator and need the mm's from TDC
 
I think you need more advance with lower octane fuel to avoid engine knock caused by preignition, or something like that.

LHill
 
LHill;8984 said:
I think you need more advance with lower octane fuel to avoid engine knock caused by preignition, or something like that.

LHill
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Wrong just the opposite. Later George
 
Up-tite said:
390 OR=2.19mm. set it at 2.00 mm for todays gas.
250 WR=2.43mm. set at 2.20mm. Later George
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I've got a really nice metric dial gauge that will give you .01mm resolution, but unless your motor is brand spanking new, there's no way you can repeatedly get down to the 100th of a millimeter. Just round those numbers and hope that you can get to the nearest 10th of a mm. If you're within + 0.1, then you're doing pretty good. My 500XC factory spec is 2.8mm, and the following year they changed it to 2.2mm. Probably 'cause it will start a lot easier vs. the more advanced timing, but that's just a guess. I don't recall if gas octane changed much between '83 and '84.
 
Old Geezer said:
I've got a really nice metric dial gauge that will give you .01mm resolution, but unless your motor is brand spanking new, there's no way you can repeatedly get down to the 100th of a millimeter. Just round those numbers and hope that you can get to the nearest 10th of a mm. If you're within + 0.1, then you're doing pretty good. My 500XC factory spec is 2.8mm, and the following year they changed it to 2.2mm. Probably 'cause it will start a lot easier vs. the more advanced timing, but that's just a guess. I don't recall if gas octane changed much between '83 and '84.
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as I recall my 85 manual was 2.2 and the reason was wear as the advanced timing was creating havoc in the engines
if you have high octane fuel available and want a thrill you need to try it once, once you get it lit it's like a bullet
but everything comes at a cost, wear and kicking danger, but 2.8 is fun
 
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