Quote:
Originally Posted by Yoshoobaroo
That claim has no weight in facts though. There's no way BMW will put an iron block back in the Z4.
I will eat my hat if the motor isn't made like this:
1: Aluminum or Magnesium alloy block with iron/steel sleeves, copper coated
2: Forged steel crank
3: Fracture-split single crystal aluminum alloy rods
3: Cast aluminum alloy pistons
All BMW's turbo engines since the N54 have been like that, I see no reason to change it. The N54 holds 1000 HP on an unopened block, IF you can fuel it.
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Insider A70TTR has hinted the Z4 will use the strandard B58.