No, the heat soak I meant was not getting enough cool air flow to the air intake...
You're talking about something different...
In 32 GTRs the air intakes are tucked pretty high up without a snorkel, so they can heat soak pretty well... the hotter the air, the less dense it is, so the less air that can fit into the cylinders... And without proper cold air induction, it sucks in all the hot air from the engines radiant heat...
And i dunno about you, but I use a turbo timer for the TURBO to cool down, it's not called an engine timer now is it?