JCW are factory N14 pistons forged or not?
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thebestbear (03-16-2020)
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This forum and experts I talked to prior to my engine rebuild the factory built JCW had forged pistons. The MCS was Mahle cast. They are a harder piston material but more prone to cracking. I went with CP because I had a dead hole already. The CP set were less than Mahle and I didn't want to mortgage my house to buy a real JCW set
This forum and experts I talked to prior to my engine rebuild the factory built JCW had forged pistons. The MCS was Mahle cast. They are a harder piston material but more prone to cracking. I went with CP because I had a dead hole already. The CP set were less than Mahle and I didn't want to mortgage my house to buy a real JCW set
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Both MCS and JCW are pressure forged pistons. A true cast piston would not survive for long in a turbo application where the effective compression ratio exceeds 15:1. Both are made by Mahle using the same M142 alloy. The difference is in material thickness. Even CP are pressure forged just with more material, a more durable alloy and a better design IMHO. An actual full billet forged piston would be cost prohibitive.
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