are the super eta pistons made from alu or the heavier iron? the big difference between a real good 2.7 and the "fake" one's I will call it, are pistons weight. i don't what one the super eta has, normal eta has the iron ones, 325i has alu.
I used new 325i pistons and made the valve pockets bigger for the cam, also cut off the bottoms to fit it to the crank
I used new 325i pistons and made the valve pockets bigger for the cam, also cut off the bottoms to fit it to the crank
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