Kawi2strokes.com Forum

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http://davestriples.com/

Another good reason to use B/C cylinders. The liners are thicker.

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I am just a man working in a tin shed.

When not pushed and nothing goes wrong, one can get away with very thin liners. Otherwise, anything past 72 mm bore (2nd oversize) is risky. With B/C cylinders maybe 3rd over will still work to some extend.
A cracked liner does indeed make a mess, doesn't it
A spilt bearingcage will generaly fly out through the exhaust with no harm caused. It will not take long for the crank to fully disintegrate though.

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Speed is what’s life about.

I know none of you have seen an Erv Kanemoto H2R engine break a center rod (the rods were nothing special past a stock H2 street rod with slots in the big ends, before the later rods existed), and, literally band saw the center of the cases apart. It ain't pretty.

These cylinders had the transfers ported
As wel to add to the liners being so thin .
I believe they were late but couldn't help.
This stuff happens even when winning the race .

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http://davestriples.com/

On my H1A the back of the cylinder below the intake port broke when #2 son grenaded a piston for me. I bought a later cylinder to replace it and The Big K had brought the liner down deeper into the cases in the tranfer areas. They made the transfer cut out shallower thusly smaller. Common knowledge about the later cylinders.

The early H2s had a higher cut away in the tranfer area than even the H2A, if I remember correctly, my H2A even is angled away from the intake port at the back edge of the transfer cut out.

I aways figured that the Big K had some breakage on the intake side of the liner and began to leave more material to ward off liner failures.

Could be wrong.

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Using a poorly conceived idea along with bad mechanical practice is not an upgrade but rather a recipe for disaster.

Asso 1.20 is a solution to more than 2d overbore

Husson please explain. I don't know what Asso 1.20 is and I bet a lot of others don't.

Asso made pistons for H2, they're top quality pistons and the good thing is there'n't like kawasaki 0.50 1.00 but 0.80 1.20 and so on .
But the german triple guys knew this and have bought all the stock from Asso factory years ago.
As most people didn't know and didn't buy them I pick up some on Evil bay years ago.

I have cut cases in half with the RH cyl Dave . Also am, naughtily still running an early set of cylinders at 73.5mm bore. Liners are .063" thick below the cylinders. Very likely to break, but as it is in a sidecar it's unlikely to cause a crash. The late model liners are quite a bit thicker as well as being a different shape around the transfer cutaways,as you guys know. cheers Nev

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I am just a man working in a tin shed.