On Thu, Nov 24, 2011 at 3:36 PM, V G <x.solarwind.x@gmail.com> wrote:
> On Thu, Nov 24, 2011 at 5:50 PM, Isaac Marino Bavaresco
> <isaacbavaresco@yahoo.com.br> wrote:
>>> 4. What metal are the cylinders and pistons of car engines made of?
>>
>> Aluminum aloy.
>
> Aluminum has a pretty low melting point on its own. What melting point
> would the alloy be (approximately)?
>
> In any case, it would seem that the flame temperature of the fuel is
> greater than the melting point of the metals. Is the sufficient
> cooling the only thing keeping the engine from melting

Various failure modes of pistons:

http://www.theultralightplace.com/pistons.htm
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