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Old 06-18-2011, 12:53 AM
planalp planalp is offline
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Default Biggest Two-Stroke Motorcycle Engine

Just curious, what's the biggest production 2-stroke motorcycle engine you've seen or heard of? 750cc or so or were there some larger?
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Old 06-18-2011, 02:28 AM
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Yamaha made the IT490; I used to have to kick start one for a friend. I had my wee Ossa at the time.

Single cylinder wise, I think Maico made a big single. I think kicking anything bigger than a 750 might be more than most mere mortals could handle. The 490 was a bugger sometimes.

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Old 06-18-2011, 06:21 AM
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Maico made a 760 single to race the BMW twins.Rotax made a big single think that was around 700cc.I had a waterbottle 750cc ported the cr^p out of it.Would walk away from a mid 80s gpz900.
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Old 06-18-2011, 07:59 AM
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The biggest that I know of is the Kawasaki Mach IV's.. 750 triple.. I've ridden 3 of them in my life and I'm helping a friend recondition one that he bought new back in the 70's.. Engine's ready.. Just waiting for tins to get back from the painter and he's still searching for an exhaust.

I remember riding the one that had really crappy tires made by Forumula.. Hard as a rock, but man, would they make a huge smokey burnout!!



And Chel in IL, who lives with Double A (both members here) has a Water Buffalo (aka Suzuki GT750) They're a bit more tame than the Kawi and were great touring bikes.. Also 2 smokers..

Her bike..


Last edited by Paper; 06-18-2011 at 08:01 AM.
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Old 06-18-2011, 08:48 AM
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Quote:
Originally Posted by Paper View Post
The biggest that I know of is the Kawasaki Mach IV's.. 750 triple.. I've ridden 3 of them in my life and I'm helping a friend recondition one that he bought new back in the 70's.. Engine's ready.. Just waiting for tins to get back from the painter and he's still searching for an exhaust.

I remember riding the one that had really crappy tires made by Forumula.. Hard as a rock, but man, would they make a huge smokey burnout!!


And Chel in IL, who lives with Double A (both members here) has a Water Buffalo (aka Suzuki GT750) They're a bit more tame than the Kawi and were great touring bikes.. Also 2 smokers..
Tires of that era were mostly crap anyhow. Brakes too (we just didn't know it, it's all we had). If you get a chance to ride some old iron after getting spoiled by what's out there now, you'll wonder about our (older riders) sanity.
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Old 06-18-2011, 11:04 AM
planalp planalp is offline
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Paper, thanks for the photo of the nice old Water Buffalo. I'd heard of them and they're about the largest 2-strokes I've heard of. I'd never seen one or even a photo of one, though. The one in the photo almost looks like it has some kind of "retro-inspired" tires on it to keep it looking vintage.
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Old 06-18-2011, 05:09 PM
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In Australia we call the Water Buffalo Water Bottle.
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Old 12-12-2011, 12:02 PM
Curtis in TX Curtis in TX is offline
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My Trail bike in the 80's was a 490 Maiko.
It broke my ankle once just trying to kick start it.

LOTS of FUN to ride. Would wheeliee in any gear with a twist of the wrist.

Rode it off a cliff in Gunnison National Forest and that ended my "Must Go Faster in the Dirt" days. I was dead for ~ three minutes on that crash. Lucky for me my riding buddy knew CPR and was able to get down the cliff to save me.
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Old 12-12-2011, 03:22 PM
hayabusa0_2 hayabusa0_2 is offline
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DonD the old guys must be nuts. I should have said this old guy. I am 63 and still ride a 450 2 stroke KDX. Just sold my 430 Husky hate to admit it but to darn old to kick start a big bore 2 stroke on the left side. knocked out five teeth on the 450 last year. But my new fake ones look better then my old real ones. And next time if I knock em out it won't hurt. Maybe the next time I ride that monster I will leave my teeth at home. But I am thinking about a WR250R. So my KDX might be looking for a new home.
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Old 12-12-2011, 09:49 PM
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I've never heard of a larger 2-stroke than the Kaw and Suz 750s. I'm not sure what they would have been used for (bigger doesn't make them more successful touring bikes and most racing classes look at displacements differently 2 to 4 stroke). Even the SAAB cars running two strokes were barely larger than 750s.
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