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Author Topic: Kawasaki kx300 myth or reality?  (Read 14217 times)

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Offline sandblaster

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Kawasaki kx300 myth or reality?
« on: August 26, 2014, 07:36:10 PM »
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Offline Foxx4Beaver

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Re: Kawasaki kx300 myth or reality?
« Reply #1 on: August 26, 2014, 08:28:13 PM »
people are still spreading rumors I see...that one actually looks cooler than the other on that was posted a couple months ago.
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Offline motopunk

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Re: Kawasaki kx300 myth or reality?
« Reply #2 on: August 26, 2014, 11:25:02 PM »
nice work with fotoshop... :-D looks like the bike that kawasaki should sell in 2015...  :-D

but the myth can be reality... all we need is a good 250 and a big bored cylinder with 72mm piston...
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big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

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Offline sandblaster

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Re: Kawasaki kx300 myth or reality?
« Reply #3 on: August 27, 2014, 02:19:43 AM »
Yep.... when I saw I was doing the dance of joy.... Then I thought about it for about 2 seconds  :-(
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline Oblivious Maximus

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Re: Kawasaki kx300 myth or reality?
« Reply #4 on: August 27, 2014, 02:51:55 AM »

 I've been reading the "Two piece clutch cover" thread and I'm thinking Sandblaster could build this bike.

 Anyone else interested in ordering one ?
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Offline treedodgingfool

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Re: Kawasaki kx300 myth or reality?
« Reply #5 on: August 27, 2014, 04:46:55 AM »
*Myth*

Quote from: sandblaster on August 26, 2014, 07:36:10 PM
http://www.oem-cycle.com/forum/viewtopic.php?f=3&t=811&p=3000#p3000




*Reality*



You want a 300? Gotta build it off a '04-or-older engine (not enough meat in cylinder to build a reliable 300 on the "R" engines ('05-'07 US).
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Offline motopunk

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Re: Kawasaki kx300 myth or reality?
« Reply #6 on: August 27, 2014, 08:30:23 PM »
my old 97 kx360



the bike is gone, but i still have the motor  :-)

and last year in the 87 frame:




in action:



and the comparison of a96 bigbore 360 (78mm) and 03 stock 250 cylinder (66,4mm)
the 03 cylinder needs repair after pistonring damage, so i plan to make a 300 when i have time and little bit money to much..  :-)
« Last Edit: August 27, 2014, 08:34:38 PM by motopunk »
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big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

---  www.der-motopunk.de.tl  ---

Offline treedodgingfool

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Re: Kawasaki kx300 myth or reality?
« Reply #7 on: August 28, 2014, 02:41:46 AM »


300 vs 250

As for that 360, sounds cool, but that cylinder skirt looks really thin! Any issues with that?
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Offline motopunk

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Re: Kawasaki kx300 myth or reality?
« Reply #8 on: September 28, 2014, 09:21:35 PM »
Quote from: treedodgingfool on August 28, 2014, 02:41:46 AM


300 vs 250

As for that 360, sounds cool, but that cylinder skirt looks really thin! Any issues with that?

yeah there is only a thin copper ring as head-gasket ..if it works better never touch it, after my time with the engine in the 87 frame and the added headstay came the water-problems with the head-gasket. but when the motor can run without any problems it is a very powerful ride ...handles like 250 and power nearly to a 500 with 51 hp on rear wheel ... when i find the time i clear the problems, because i love to ride this little beast...  :-D
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big 2 stroke bikes are weapons for real men, who don´t fear death or devil. ;O)
´83 kx250, ´87 kx250 (with 360 big bore), 87 kx500, ´93 kx500 sfc

---  www.der-motopunk.de.tl  ---

Offline LukeG

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Re: Kawasaki kx300 myth or reality?
« Reply #9 on: October 07, 2014, 04:18:48 PM »
I have found a company that does a 72 X 76 with a 92-07 motor. They want $2895 Aussie peso for it.
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Offline don46

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Re: Kawasaki kx300 myth or reality?
« Reply #10 on: October 08, 2014, 05:10:01 AM »
Quote from: LukeG on October 07, 2014, 04:18:48 PM
I have found a company that does a 72 X 76 with a 92-07 motor. They want $2895 Aussie peso for it.

don't believe it for a minute, 05 and up have to much port overlap and when punched they get really tight, piston pin has to move and still don't work, I have a cylinder and head in my attic that was my attempt. My guy was an accomplished builder who had done hundreds to older cylinders and thought he could do it to the newer cylinders as well, the first one lasted 20 seconds the second made it 30 minutes of very easy riding and there wasn't a third thats why its in a box in the attic,
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