Fan, Shroud & Radiator - Optimal Spacing?

BLUEBYU,

I have never tested it on a car BUT - I had a similar issue with a fan at the top of an A/C compressor.... turns out ~ 1/3 to 1/2 way into the shroud was optimal.

I do not have any data that would help ... only that the high-side pressure came down best at that level.....

And ... I wish I was a "anal" engineer .... getting that degree was too hard!

Kory