Hi Rob,
The John Turney is one of our major participants on the Healey BCF (see entry #6 on this thread) who designed the shroud. I liked his design and he graciously sent me the plan. I made his shroud with a few modifications to allow me to tie in the forward panels needed to create a closed duct between grill and radiator.
As mentioned, John's fan shroud is a 2-piece unit that allows each side to be installed or removed without disturbing any other component (as is required by single piece fan shrouds). Additionally, each side is secured in place with the radiator mounting bolts so it can be eliminated without any indication of its previous presence. If you are interested, I would PM John and discuss it with him.
Bob,
Thanks for your response. Using the 4-blade original fan, even if a long idle does bring my Healey temperature just above 200-F, as long as it doesn't get too much higher, it could be a good change. However, since I did implement John fan shroud with the Texas cooler, I may have to recreate (or modify) the shroud for the different diameter of the 4-blade.
Thanks,
Ray(64BJ8P1)