Bry,
I always wondered how you made that 911 fan fit the T1 cylinder tin
I have a datalogger that I built that could be used to monitor the temps, but you'll have to supply the TC's, could discuss at the April meet.
I have taken a closer look at the inside of an original 911 shroud from the -6, a 2.4L if I remember correctly. There is a cone-shaped diverter bolted to the back of the fan with 2 vanes, but the vanes on that diverter direct the air into a heat exchanger from what I could tell. The vanes point directly at a tube that connects to the shroud.
How did your engine run with it last year ?
I'll be fiddling with my 911 shroud this summer as well .. no cooling issues to report yet ! It will be fun to play around with diverters and such as all testing I have read about the 911 shrouds for VW engines has been using the shroud in its raw, unmodified form.
I bought one of those cheap fog machines at Walmart for Hallow'een ... would be cool to make a clear mold of that shroud and fill it with fog while the engine is running to see how the air flows.
Good Job.
Sandeep