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 The previous version was outdated and no longer supported.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

125-200cc Husky 125 intake port..

K.Forte'

K.Forte'

Husqvarna
A Class
Hello all,, does anyone know what the rectangular intake port at the base(mating surface) of the cylinder is for?,can it be open'd up slightly for a performance gain.. It sits above the same type of rectangular cut in the case,,just above the reed valves... Always Tinkering.. :thinking:
 
You talking about this port? Bottom center in pic? I believe it is simply one of the transfer ports.

IMG_6915-XL.jpg
 
Yes sir that's her,,that one looks like its been open'd up a tad,it looks more rounded..Kelly can i open it up a bit there and what would be the benefits?? Thanks..
 
K.Forte' said:
Yes sir that's her,,that one looks like its been open'd up a tad,it looks more rounded..Kelly can i open it up a bit there and what would be the benefits?? Thanks..
Click to expand...

I really don't think there will be much of any gains opening that up. But then again I am not the right guy yo go commenting on porting which I know nothing about.
 
I open the rear transfer up on the 165 to allow more room for welding the rear channel up on the sleeve. If you look at the profile in the cylinder of that port you will notice that it is very shallow and designed to shoot up flow up the rear of the cylinder to help push exhaust out the exhaust port. It really is more important to keep velocities high there than ultimate flow. Opening the port up will slow down the velocities. It is a trade off for the 165 of re-enforcing the sleeve vs best flow characteristics. JMO
 
Im with Walt on this but you could match it to the cases by laying a base gasket on there but really dont see any gains to be had
 
So going with the flow characteristics of the port to help excavate exhaust gas,,the tunnel effect( big to small) would'nt help flow faster??wally,,john thats what got me thinking,the gasket out line on the case and cylinder?, atleast try to match the 2 ports(cyl-case) close to make flow a bit easier.. The case port is quite a bit larger than the cylinder port..:thinking:
 
Yes, you can open it to match the case and maintain the big to small aspect of the port. The top side needs to maintain it's high angle of about 65-70 degrees, sort of aimed toward the plug. This is a very important scavenging port and help pull transfer flows up the rear cylinder wall to purge burnt gasses.

Normally referred to as the rear boost port.
 
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