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Can anyone identify these pistons?

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Can anyone identify these pistons?

Post  rob spence on Tue Sep 19, 2017 12:37 pm

I have these two pistons...I'm presuming the piston on the left is a normal 197 (8E) piston.
What is the piston on the right? It has the same dimensions (59mm) but cut outs and thinner ring grooves.
Any ideas?

rob spence

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Join date : 2017-03-20

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piston ID

Post  piston 197 on Tue Sep 19, 2017 4:02 pm

One on the left is 6,7,8,9,10,11e 197 piston, other looks the same but has been shortened at the skirt and ported, probably ex Go-Kart, there are 4 different ring configurations
3/32". 1/16", 1.5mm and Dykes on various Hepolite pistons

piston 197

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