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      03-16-2007, 12:51 PM   #12
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Drives: 335i m-sport LCI
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Originally Posted by Maestro View Post
Good links,

However, I think they went back to the older all Al engine due to issues they were unable to resolve with the Al/Mg alloy engine. The reason I say that is because I do not buy the comment that says it would not be strong enough.

Ferrari use a Al/Mg alloy block for their 600 hp engines in the 599 GTB, so why can that engine handle it and not the BMW.

I think one reason is that Ferrari inspects and tests each block as they are made verses BMW mass productions. So maybe it was becoming too costly for BMW to deal with the Al/Mg engines. It is a shame since the Al/Mg would give us a lighter car and cooler engine.
So what 'issues' do you think they were worried about?

BTW .. I think the N53 is Al/Mg like the N52 - so it's not as if they have ditched this option. It's only the N54 that has changed.