I believe there are a number of non-aluminum parts in the engine. I'm pretty sure the cylinder sleeves are ferrous, and then there are other parts such as crank, rods, rings, cams, rocker arms, etc...
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed |
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