Quote:
Originally posted by SaabJohan
An aluminium block can't be die cast (without pressure).
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Man you are argumentative. Translation of above for Pikachoo....
Yes you can die cast aluminum, but it must be put into the die pressurized to prevent porosity and homegeny problems (which are not concerns using iron). Aluminum contains hydrogen and will naturally form air pockets if not left under pressure, in addition it is almost always some alloy of which some metal constituents are heavier than others. If you were to just pore it in their and let it settle out via it's own weight, some parts of the mixture would settle out and the alloy would not be consistent throughout the block. Either problem will net you a useless hunk of aluminum from an engine builder's perspective.