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 The previous version was outdated and no longer supported.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

250-500cc New project

SmokeyExpress said:
Good stuff! My goodness he must have had that donk sitting out the back for 20 years! All the best with sorting that piston! Would it be better/possible to sleve the cylinder down to say 68mm or bore it to 72mm? Just a thought, if it didn't throw port geometry out too much then it would be far easier to get pistons for in the future!
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Ordered a 71.5mm piston today when it arrives I'll send it and the cylinder to Electrosil in Melbourne so I will have a pretty good engine when done.
 
You dealt with electrosil before chilly? I've heard conflicting reports but never had any work done by them. Bloody expsenive I know that!
 
Have used them a few times Shawry since they are the only buggers who do the whole nikasil plating and with the weak AUD, they know it too. A mate just recently sent his 450 cylinder to be redone in NZ and that worked out to be cheaper (http://www.nzcylinders.com/) but the quality is every bit as good as electrosil.
 
Yeah last time I looked it was $600-$700! Will have a look at nzcylinders too. Aurum plating down your way OMG are no good apparently. Still work out cheaper to send stateside to powerseal!
 
Aurum Plating is in Qld l think? Keep hearing Powerseal is great and inexpensive but l would have thought the weak AUD would have made it prohibitive?
 
$184US i got quoted jus this am. Say $120US postage there n back still only $400AU! With matched wossner piston n little end bearing another $200US so say $650-700AU tops with matched piston ready to go. Mob in NZ quoted $400+ plus postage both ways so say $100-$150AU so $550AU total. Wossner piston kit n little end $200-250AU so $750-$800. Easier to get it all from one place n perfectly matched plus save me $100(that's 2 cartons plus a bag of pistachios!)
 
And today's questions are how the %#@X do I get the water pump impeller out to change the seal?P1010492.JPGP1010493.JPG

Second question is the original carby is no good but I have a used minkuni flat slide that is the same size, what would be a good baseline jetting spec, pilot and main?
 
Ok the saga continues. Engine is back together, I have spark, new mikuni flat slide from mikuni oz jetted to suit but it will just not fire. Any suggestions and Yes I made sure the ignition went back in exactly the same position. Will not start with the carby that it came with either.
 
Chillybean said:
Ok the saga continues. Engine is back together, I have spark, new mikuni flat slide from mikuni oz jetted to suit but it will just not fire. Any suggestions and Yes I made sure the ignition went back in exactly the same position. Will not start with the carby that it came with either.
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Forgot to mention I need it running by next weekend as Frank Ponns is coming to rebuild and set up the suspension.
 
Right you've got spark that's a start.
Air way isn't blocked? You didn't stuff a rag in the hole to stop anything getting in did you.

What are the symptoms did she kick over fine or is she a mule, who set squish.
Are you kicking over with throttle open or closed and with cold or off.
There's alot of variables we are all in the dark too.

Go through the list of your starting routine and post it up maybe we can spot something.
 
juicypips said:
Right you've got spark that's a start.
Air way isn't blocked? You didn't stuff a rag in the hole to stop anything getting in did you.

What are the symptoms did she kick over fine or is she a mule, who set squish.
Are you kicking over with throttle open or closed and with cold or off.
There's alot of variables we are all in the dark too.

Go through the list of your starting routine and post it up maybe we can spot something.
Click to expand...

No rag in airbox, even checked that piston is in the correct way. Have tried all throttle settings, choke on and off.

General try to start with no throttle but choke on sparkplug is new, has never kicked back or blown back though air box. Squish was not set, assumed it would be close enough. Kicks over fine, good compression.
 
Ok well I would check your squish, plug gap and plug cap.
Make sure you don't have a suppressed cap with suppressed plug.
That's the simple one also the gap should be half a mill a bigger gap does not make a bigger spark it makes a weaker one as the energy required to span the gap increases the further away it gets.
If those are fine I would do squish test my method it to remove head put play doh or plastercene on 4 points of piston put to lower end of stroke with oil on the top of them then replace head an kick over twice. Un do head remove plastercene and measure all 4 then you've got the amount of squish.
Check with the book or online for your requirements.
Adjust base gasket suit the clearance required.

If those don't work then I'm guessing you need to re time the thing, is it possible you installed the stator 180deg out?
 
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