Possible 300cc conversion

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Post by Luders » Tue Nov 27, 2012 9:52 pm


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Post by Top-shaggy » Wed Nov 28, 2012 12:44 am

The O rings look neat as a solution to cut out the head gasket.
The middle ring looks easy to do... But I don't fancy cutting the five sided external ring. How did you cut the outer ring groove?

You will have to let us know how it runs / compression etc?

Thanks for posting pic Luders :D
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Post by 2stroke » Wed Nov 28, 2012 5:08 am

6 hour to program the CNC.
Now just hot a button and it does it perfectly.

Will keep you posted :)

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Re: Possible 300cc conversion

Post by Gerrit » Sat Dec 14, 2013 11:50 pm

It's an oldish topic, but have you thought of using H1 pistons? They are available from 60-62 mm from Wiseco and Wössner, and 60-61 mm from Kawasaki. They also use 16 mm gudgeon pins, height from centreline of pin to edge of piston crown is 32 mm, dome height is 4 mm. Total skirt length is 65 mm. Hope this helps.
Of course, if you want a really big KR tandem twin, you could use H2 pistons starting from 71 mm and up............ :D
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