if u want to go 81.5mm max..i suggest supercharge..if u want to go 82mm use this piston..cast iron but with strong material grade alloy C8a Grade, T-6 Heat treated for strength.
Highly resistant to heat. Australian made
i am new here.. and i wonder if there is any 4G93T club for wiras?! i really hope to be able to meet more of my fellow engine-mates.. wanna learn a thing of two.