It only blew the head gasket cause I saw coolant temps of around 240 on the track. I had no ducting, a sub par aluminum radiator, and crappy fans. I have since installed a triple pass radiator, spal fans, ducting etc.
I purposely took it to the track that way the first time just to see how well it would hold up. I also melted the exhaust gasket during that event.
Before the track day I had been doing a few AutoX's and daily driving it without issues. The bottom end is still fine but I went 1.8 anyways since the torque is better.