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 The previous version was outdated and no longer supported.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

two stroke oils

Kartwheel68 said:
Umm...no, that is not you, or anything like you or anyone else on this site that I know of, that is former factory racer Scott Burnworth.
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I ran my 390 hard. The rear wheel never stopped spinning. My kid ran the 125 Honda like that in the open straights. We were close to pushing it like the video. Not exactly but you get the idea. The roar of the 390 got my adrenaline pumping.

We're not even close watching the second video. He's an animal on that bike.
 
At 8:40 on the video did a husqvarna just pass him? #258?
Oops passed him back.

What bike is that? It rips. He got in the groove towards the end and got even faster.
 
The Husky was a 75-76 CR with double the rear suspension travel of Burners Ossa, so it was not exactly an even match.
 
the youtube description states the husky is a bigbore, so likely a 360. i believe the phantom is a 250? i dont think ossa made one bigger, at least not in my limited research.
 
Better to run too rich than too lean. Another killer of two-stroke engines is stuck piston rings due to carbon build up. Piston rings need to be able to move freely in the piston groove.
When I do piston ring/piston clearance checks I will take an old piston ring and clean both the ring grooves and carbon build-up on top of the piston itself. In 40 years of riding two-storkes
have yet to seize one. Castors are very good oil for heat but it will required to clean the top end up more often. A lite honing (providing clearances are good) also helps with bore
lubrication.
 
You gotta wonder how many issues we caused when we removed this little device ... The first article mentions it's pointed right the issue of low\high speed oiling ... I'm seeing quite-a-few of these things here still in use...

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If my memory is correct, when I used an injector decades ago on a 125cc bike, the oil rate usage was slow ...
 
Guys were removing those years ago and finding out there crank bearings were going.
You had to drill a hole usually on the ignition side down to bearings for lubrication.
Or as long as the clutch side, bearing seal was inside webs and bearing was in oil bath.
 
I have a Yamaha TY 175 with the factory oil injector. It works very well. Inspect it every once in a while. I have read that it is set up to mix at 100 to 1 at idle and 20 to 1 full throttle which is all great if it is doing just what is claimed. The biggest problem I have read was people forgetting to add oil and now it is zero to 1. Also must inspect the cable. I have taken some time to learn how the pump works. I have faith in it, but I do inspect on a regular basis. The Can-Am is the one that injects into the crank bearings. The Yamaha injects into the intake manifold between the carb and cylinder. The new Beta 300 Cross Trainer has oil injection. A reliable oil injection system would be the best way for future 2 strokes. Maybe Beta has the answer. Jeff
 
I remember guys disconnecting the injector systems and switching to premix... without rejetting to account for the oil going through the jets. The bikes would be lean, lean, lean. I wonder how many seizures this caused. I know of a few.
 
I removed the oil pump off my old kmx i never re jetted and that thing never missed a beat, im not a pro rider but highway abuse must be hard on the eight litre engine.
 
I am guessing that the owner of the Ossa Phantom has spent much money on that gearbox ****************************************
No way would they stick being power-shifted like that when stock. I have seen many a Phantom lead a race only to come to a grinding halt a lap later when the gearbox self destructed.
 
The oil injected Suzuki ts series bikes had oil lines going to both crank bearings. There was brass flat washers on both sides of the crank weights. This stopped some oil from running out of the crank bearings. Another oil line went to the intake. This fed the cylinder and rod bearings. To make it a ratio mix engine the brass washers needed to be removed.
 
The Yamaha system didnt inject into the main bearings it just dribbled oil into the intake tract just like Yamaha and Kawasaki two stroke Jet Skis did all the way until they went all four stroke. The Suzuki, Kawasaki and Can-Am motorcycles injected into the mains and intake, and the Can-Am also had a passage in the crank from the mains to the big end rod pin so pure oil was also fed directly to the big end bearing. Pure undiluted oil pressure fed to the bearings is far superior to pre-mix but its not as "cool". The Mikuni oil pumps used in all those applications are ultra reliable and almost never fail unless they get dirt or debris in them. When I worked at a multi line dealership Kawasaki sent us a tech bulletin about Jet Ski oil pumps, they tested 203 pumps that they tested because they were cited as the cause of warranty engine failures. Of those 203 pumps only 1 was not functioning properly and that one did not pump a single drop of oil. When we sold a Yamaha Blaster 200 four wheeler, the first thing the owner would do is take the oil pump off, but the fact is you are statistically 10 times more likely to forget to mix oil in your gas than you are to have one of those oil pumps to fail.
 
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