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 The previous version was outdated and no longer supported.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

  • 2 Stroke Husqvarna Motorcycles Made In Austria - About 2014 & Newer
     TE = 2st Enduro & TC = 2st Cross

TE/TC Tiny Exhaust Port Purpose?

AusCan

AusCan

Husqvarna
C Class
I have a 2016 TE300, and have the cylinder off for a top end service. It's the 1st time I've had one of these engines apart, and I'm curious about the purpose of the tiny port above the main exhaust port? It isn't making sense to me...20211125_141651.jpg
 
Why have a decompression port? I agree that it's what it's doing. I've only seen decompression valves on really old 2 stroke stuff, and not just a permanently open port.
Seems odd to me to send un burnt fuel straight into the exhaust.
Is it to change the rate of compression pressure rise?
I'm really curious
 
AusCan said:
Why have a decompression port?
Is it to change the rate of compression pressure rise?
I'm really curious
Click to expand...

Think of it this way....the compression is lower until the rings pass that spot, so your question on that should answer itself. Maybe that was the least expensive, most efficient way to achieve the needed compression without retooling cylinder or piston configurations.:excuseme:
 
It's a time game. At kicking/E-start RPM that would produce a huge leak... and be an effective starting aid. At running RPM the piston passes that small hole so quickly that it's really a very small leak in the big picture.
 
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