Hello, Norm.
I ran into the same thing. I could not lower the radiator by any significant amount, so I downsized from a 17" fan to a smaller 16 1/4" fan blade (the one with red tips) that I bought off e-bay. The change in diameter seems to be due to going from a round tip to a flat tip and probably does not change the volume of air moved by much (I think).
17.5 and 16.25 inch fan blades.jpg
The smaller fan gives 5/8" clearance from the lower radiator hose and transmission lines. I used a one-inch spacer to get a one-inch clearance between the fan and radiator.
I use a "ThermoCap" to monitor the temperature of the radiator.
ThermoCap1.jpg
My old radiator would measure 210 degrees when I came home from work and the new radiator has been reading 180 degrees. The dashboard temperature gauge stays more at mid range while in stop and go traffic, where it tended to move to three-quarters with the old radiator. I have been happy with the new radiator.
Dennis.
Bookmarks