Well you learn something every day, I was wondering how you'd do such a thing. As I understand what you said, and if I've got this right, their problem is actually still the heat.
That heat sink system is going to reduce the rigidity of the whole block significantly, if it works as I think it would. That reduction in structural rigidity would lead to defroming under torque, but if you remove the cooling then your going to melt the block.
Of course I could have completely misunderstood what you said. It has been know before
