Is the 2002 A6 4.2 an aluminum block engine?
06-24-2009, 10:43 AM
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typically aluminum blocks are used to save weight. For example, the v8 is lighter than the iron block v-6s. In audis, with the motor in front of the front axel, this is a big deal.
OTOH, they are more fragile, adn cant be drilled out. Audi alloy blocks have a nikisil liner that is largely immune to normal wear. Really really hard. Of course, the rings are less so.
Grant
OTOH, they are more fragile, adn cant be drilled out. Audi alloy blocks have a nikisil liner that is largely immune to normal wear. Really really hard. Of course, the rings are less so.
Grant
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