purpose of the cut out in the side of 2 stroke piston

dazza2
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dazza2
Edited Date/Time 6/20/2019 1:36pm
just bought a new piston and it doesn't have the cut out like the other one does anyone the purpose of this what difference does it make


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dazza2
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dazza2 6/18/2019 7:06am
6/18/2019 7:06am
cheers for the response not sure i follow what do you mean by mixture
i have emailed wiseco to see what they say but no response yet
Kristen_Valentino 6/18/2019 2:25pm
6/18/2019 2:25pm
I could be completely wrong, thought I read it in A Graham Bell tuning book, were used in possibly kart engines, last year I did talk to a guy at wossener about lightening a 72mm piston, he said the pockets in there were pretty much at there limit before it compromises strength.

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dazza2
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dazza2 6/20/2019 1:35pm
6/20/2019 1:35pm
so its only a weight thing then wonder why wiseco didn't bother with them i borrowed my friends scales so i could compare weight of wiseco and vertex i didn't think it was too bad considering its forged vs cast



dazza2
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dazza2 6/20/2019 1:36pm
6/20/2019 1:36pm
wiseco wrist pin is heavier also
jlv148
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jlv148 6/20/2019 8:26pm
6/20/2019 8:26pm
It's for extra crankcase compression. At least that's what the ads used to say. I wouldn't worry about it.

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