Found this while on
www.pelicanparts.com/forums Its a pic of the inside of a 911 shroud with the alt removed.
http://forums.pelicanparts.com/showt...lternator+fins
Look at how the cylinder tins extend up into the airflow from the fan. There is also an air diverter on the back of the 911 alternator that does not seem to be present in a T4 911 shroud. Perhaps this is a clue as to why the T4 911 shrouds don't cool evenly.
911 Cylinder tins ...
I'm finishing my datalogger using a Motorola 68hc11 microcontroller and hope to get some readings from my Fat 911 cooled T4 engine before I store the car for the winter. Currently, I can only log 25 seconds of CHT readings from #1 and #4. I've got the rest of the items I need to connect #2 and #3, just need to find the time to finish it.
#4 seems to run at 315F normally, and 360F when I get on it, #1 seems to run at 300F normally, and 325F when I get on it. Hope to get some solid data and then I can fool around with the tins to see if I can even them up a bit.
I know the DTM is the "Cat's A$$" but I love to tinker
Sandeep