I do not have technical info as to the overheating aspect aside from the fact the heat KILLS a motor, period. I would have to say that Alusil would have a little more tolerance to heat as it is somewhat porous that could also help with dissipation. That being said, I would not use a severely overheated block.
Originally Posted by bigjae1976
Awesome! So how does overheating affect Alusil vs an aluminum block like the M54?