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 The previous version was outdated and no longer supported.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

NETRA ANNOUNCES NEW VINTAGE RACING SERIES

Bigbill said:
I hope my son will race it. My 64yo body is battered up really bad. My heart is in it.
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Big bill my 14yr old son raced a 1990 KDX and has ridden my 78 RM 250. He had fun at the vintage event more than the junior racers who are soo serious. I will let him ride my Husky this yr. It is great to get the kids out on vintage bikes. It is easy to ride a modern bike. If you can walk and start your bike then just line up with us and ride to your ability.
 
My son rode my husqvarna '83 430wr that he finally traded me his Honda 125 for it. He was pretty quick on the old Swedish iron. The 430wr would go anywhere you point it.
 
Exciting stuff! This sounds great. Planning to hit a couple of the races. Going to keep an eye out for the rules. 83 winter rebuild project in progress. Got a new clutch (8-plate mod) , an extra spark-arrestor muffler, and a spare modified WR cylinder for the CR. Should make a good HS machine.
 
motojason said:
Exciting stuff! This sounds great. Planning to hit a couple of the races. Going to keep an eye out for the rules. 83 winter rebuild project in progress. Got a new clutch (8-plate mod) , an extra spark-arrestor muffler, and a spare modified WR cylinder for the CR. Should make a good HS machine.
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You coming from Michigan to race with us?
 
One change only doesn't make much of a difference you/need to do it all. Everything works together.
 
Michel Dufayard said:
You made the modifications yourself ? Easy to do ? Tools ?
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I got the cylinder already modified. I did some additional clean-up on the base of the cylinder (Bulletin Figure 3) with a Dremel tool and sanding drums. It was easy, but that is the most basic part of the job.
 
Bigbill said:
One change only doesn't make much of a difference you/need to do it all. Everything works together.
Click to expand...

I only have one pipe at the moment and it is in great shape. Considering getting another pipe for MX. If I do that, then I might modify my stock pipe.

Any suggestions for MX pipes?
 
Changes to make,

The UFO in the bottom of the round slide allows better flow to the feed cage. It's easier to tune.

I installed a feed block spacer about 1/8" to 3/16" to 1/4" what ever room there is for it. This allows more breathing room around the feed block and more flow during the fuel transfer cycle.

Port the cylinder to the husky specs.
Clean up and knife edge the rib in the transfer port. I have put a "U" shaped or radious on the transfer port rib besides a knife edge.
I lower the intake port about 1/8" and raise the exhaust port 1/8" and arc it. Besides widening it.
Make the transfer cutouts the same on the bottom of the cylinder to the case cutouts using the base gasket. This allows the flow to be more constant and even.
With the exhaust port at the opening I open up the port and polish it between the cylinder and the exhaust flange. Match the exhaust port opening to the flange opening allowing for a more even exhaust exiting flow. If the inner edge of the exhaust flange sleeve sticks out inside the port with a square edge then taper or chamfer it so the exiting hot gasses don't hit the bump on the square edge.

Add a CR pipe.

Now if you raised the exhaust port and lowered the intake ports a tad you can advance the ignition timing. Since we changed the port timing.

Porting smooths out the flow of fuel entering the engine and the exhaust gasses leaving the engine. The biggest difference and improvements will be noticeable in the throttle response and the improvement in the power delivery. There's a learning curve your going to go through at first. Go slow you will use that gain in performance to your advantage.
 
huskyintakeport_zpsaaccbe34.jpg



Good stuff, Bigbill. Thank you. I have a question about the base of my ported WR cylinder. The cylinder that came on my CR has two cut outs at the base on the intake side behind the sleeve, below the intake ports, and they open down directly into the case. My WR cylinder does not have these openings. Should I cut these additional openings in the base of the WR cylinder? You can see the openings in this picture below the intake ports. (not of my cylinder, but my CR is the same)
 
my 84 wr250 jug has 1 large exhaust port, with 2 very small addl exhaust ports on the sides. i dont see them on yours. mine also has two small intake boost ports, they are at the top corners leading to the transfers. your cylinder is different than mine thats for sure.
 
Photo512.jpg
here we are...this looking from the top, a light is held in the exhaust and you can see the small extra exhaust port. there is one on each side of the exhaust. its pretty cold here and my lights in the garage are pretty dim!
 
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