• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st 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 The previous version was outdated and no longer supported.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!

449/511 Breather hose mod

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Sailingaz said:
Here's my solution. 1200 cc oil after oil and filters drain. Seems to work fine, nothing makes it to the filter. I'll end up making a dust shield for the filter at some point. I got a measured 1150 cc of oil from the engine and filter when I drained it, it had puked out at least 100 cc before that. I may like this bike again. Thanks for the encouragement on oil levels and such.
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That's exactly how you have to run it if you want the oil to go back to the crankcase, because it will not flow back through the OEM breather.
 
Sailingaz said:
Here's my solution. 1200 cc oil after oil and filters drain. Seems to work fine, nothing makes it to the filter. I'll end up making a dust shield for the filter at some point. I got a measured 1150 cc of oil from the engine and filter when I drained it, it had puked out at least 100 cc before that. I may like this bike again. Thanks for the encouragement on oil levels and such.
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thats what I do to. Did it about a year ago, no issues. I think the combo of the suction from the motor and the low height of the end of the breather conspired to suck oil onto the filter. Mount it out of the box and higher and you are good to go.
 
Tinken said:
That's exactly how you have to run it if you want the oil to go back to the crankcase, because it will not flow back through the OEM breather.
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it won't? my oil level is steady and no oil on my filter at the end of the longer higher breather?
 
Motosportz said:
it won't? my oil level is steady and no oil on my filter at the end of the longer higher breather?
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Nope. That's what Ty said to me and I didn't believe him so I hooked a quart of oil up to the breather and sure enough, it would not flow back to the case. Something to do with the gasses flowing through the torque limiter, it isn't just a straight hole. To combat this problem, Ty and I designed a whole new breather hole for the Kymco engine. Production run of new breathers will be done next week. Should have them up for sale on the website near the end of next week.
 
It could be that you don't run 1200cc's in your engine. I bet if you increased your oil quantity to 1150cc that you would have more oil in your tube.
 
Why is it a kymco engine ? Over and over kymco kymco.... Any flaws with the motor and that's on husky / BMW ... Kymco gave them exactly what they wanted period. Its like Apple makes there stuff in china. and whose falt is it for blowing up so many ZipTy bikes , Ty or the rider , I don't see any on on hear blow up a TE 511 yet... Just saying.
 
I for one am just pointing out the mfg, nothing negative intended.

And I also have not heard of any real problems with this engine, even with reduced oil. I just change mine compulsively. The extra capacity seems a great idea for longer or harsher riding, but I'm quite confident that my Engineered by BMW/Husqvarna, built by Kymco engines will have reasonable lifespans if I continue to maintain them well.

A guy like Ty has the ability to work his machinery a lot harder than I do !
 
Rearwheelin said:
whose falt is it for blowing up so many ZipTy bikes , Ty or the rider , I don't see any on on hear blow up a TE 511 yet... Just saying.
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Interesting you asked such a question. I'm not here making things up to gain interest in a particular project, nor am I attempting to cause alarm or panic. I would simply like to work through this issue and come up with a better solution to happy riding.

I actually had an in person meeting with Husqvarna North America recently and we happened to discuss a little of this as well as many other great things to come.

Here is a link to Malcolm and Alexander racing the Norra 2012. Read carefully about the MSR TE511 exploding 200 miles into the race. Now this is not a race bike, it is a regular stock bike like everyone elses, it just has an exhaust like mine, no JD or PCV.
http://www.cafehusky.com/threads/check-out-malcoms-bike.25101/#post-226088
http://www.cafehusky.com/threads/check-out-malcoms-bike.25101/page-2#post-239691
I have discussed this with Alexander Smith who told me the damages totaled over $2000 dollars. This isn't one fluke accident, look back at Dakar very carefully and tell me exactly how many Kymco engines they blew up? All of them? :thumbsup:
 
Tinken said:
It could be that you don't run 1200cc's in your engine. I bet if you increased your oil quantity to 1150cc that you would have more oil in your tube.
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So you are saying I should almost double the amount of oil I just put in the bike?
 
Actually I think we are saying the same thing...200 miles at speed on a dirt bike without stopping is fairly unusual in my experience. And Dakar is the definition of harsh riding. At most we tend to race 2 hours at average speeds more like 30-40 with a lot of variation in RPM, and when not racing then 5-10 mile spurts while waiting for the slow guy (thats me) to catch up.

And I certainly didn't mean to imply anything about Ty blowing up bikes. I was a local pro level MX rider many years ago, and the percentage of the time I spent on the gas hard was much more then than it is now. Any good rider is pushing the machinery much of the time. Lets not forget that Ty and Nick rode these things with considerable success in desert races. Cory Graffunder showed up here last year and ran away from the field on a 511 at the Funky Chicken and 3 hours later it was still running strong, but Im sure they didnt run it for 2 years that way.

Lots of 449/511s around my neighborhood that are holding up well being ridden as casual trail bikes, and one being raced by brother who rides pretty hard, but is actually quite gentle on the bike. Its hard to use all that power when most of the straight stretches are only a couple hundred yards long. He's smooth and keeps up momentum, no need to work the engine when you have a huge lead.

I think there is real value in the extra capacity oil cooling being talked about and I very much intend to buy one for my dualsport 449 which sees an occasional 100 mile day with higher average speeds, but I also dont think the average trail rider needs to be too concerned if they change the oil every week or two, or after every ride. It aint an XR650 Honda and cant be maintained like one if you want long life out of it.
 
So why not redesign the piston and rings for less blow by ? and thanks for throwing the cards on the table. When I had my breather pointed at the funnel on my test videos (lol) it would ripple the oil surface . Interesting that when I had 2000cc in I couldn't get oil to come out the breather, seems like the oil shuffles around between compartments with different fill amounts and oil temps and viscosity might have huge roll. I think that the breather needs to be free'er flowing to help with these issues is why I'm going half inch on the breather box hoses.
 
Here's the thing that gets me; Simon Pavey ran all 14 days at Dakar on the same engine. He ran 10w40 and dual radiator fans, no oil cooling. I believe he cooled the engine sufficiently through oil flow and coolant temperatures.
 
One would assume with his relatively limited budget he didn't have the "thrash the living fsck out of it 'til it goes bang then change what broke" mentality of a factory team rider.
 
I remember watching one of his bike prep video's and his mechanic modified some force radiator guards so that they could fit a 2nd fan, Speedbrain made their own frame and most everything else!
 
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