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Awesome piston!, pay close attention to your piston to wall gap/ ring gap! These pistons have an offset wristpin with no real description/instruction on how the piston should face installed since their is no indication on the piston anywhere. Called JEpistons direct and asked what the arrow on the underside ment and all they could say was the arrow with the letters RA on the underside of the piston is referenced for their knowledge for the words RIGHT AWAY meaning looking at the crank the arrow should face right. Have had no issues yet with my build installing this way. Also a diagram on their site depicts this. ZZP said it doesn't matter which way theu face but if you ask me if you have an offset wrist pin it deff does. Buy again? yes
Great product and even better service
I recently had an incident leading to a complete engine rebuild. ZZP's staff was very patient and walked me through the installation steps and shared their extensive knowledge around the Ecotec LSJ engine.