s54 rebuild

[M3loverboy]

Getting block bored to 87.25mm any recommended piston and connecting rods to run? I've seen mahle, Weisco, and Carrillo. Im not 100% sure what's the best quality between these brands or if there's another brand blowing these out the water.

[BMWfanz]

Used CP Pistons (Carillo) and JE pistons. Both good quality

[digger]

i would use Mahle MS before Wiseco or JE

[LSB4Me]

The Porsche guys go Mahle first. If Mahle doesn’t make the requisite size, then JE. There are a few others that are used in rare instances, but those two are the standard.

I run JEs in the 2.45L in my 71. Zero complaints or issues.

I would apply the above logic to the e46 without question.

[Altaran]

I'm using the Carillo pistons for 87,25mm.

I ordered them through Achilles with the cross-forged option. It's the lightest available piston for the S54. They work perfect.

I'm running 12,5:1 compression ratio, if you want something different, let them know, they can customize.

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[BMWfanz]

I've ordered custom CP pistons with deeper valve releifes from Lang Racing Development. Great custom service.