Quote:
Originally Posted by mkoesel
I don't understand why Audi is still using iron blocks. Maybe I am just out of the loop, but as far as I know, no one is using an iron block in any other engine besides some (but certainly not all) V8 truck engines. What other passenger car today is using an iron block?
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Iron blocks leave you all kinds of room for improvements. But, and I'm guessing here, it has to do with packaging. If they're using really thin walls an aluminum block wouldn't last long.