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oXeNo · 11-28-2014, 07:56 PM

http://www.courtesyparts.com/sr20det...-p-227891.html

There is a number stamped on the top of every SR piston. My motor happened to have all the pistons stamped with the 2. Another SR of mine had two grade 3 and two grade 2.

11-28-2014, 07:56 PM	#3
oXeNo Zilvia Member Join Date: Feb 2012 Location: Thomasville Posts: 188 Trader Rating: (5)	http://www.courtesyparts.com/sr20det...-p-227891.html There is a number stamped on the top of every SR piston. My motor happened to have all the pistons stamped with the 2. Another SR of mine had two grade 3 and two grade 2.