I am absolutely convinced that shrouding is a must for any track work.
The very highest post-IC temps I have seen are 150 - on a hot day, with 1.0 indicated boost with race gas. And 3 oil coolers.
3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno