Re: temperature problem?

Posted by HH56 On 2015/3/18 17:26:08

My 47 was approx 2 1/8" from front of blade to the core with the regular pulley. I believe dimensions in that general range was common on several of the Clipper style body designs.

Maybe they designed extra distance with the fan driven AC in mind, With the AC pulley and a 3/8" spacer between blade and pulley that is needed for AC belt clearance at rear of fan blade, the blade to core distance is just over 1". I believe a smaller distance is more typical of the later models.

I'm not sure how applicable to Packard but several sites mention distance as a big factor in development of turbulence and reduced air flow thru the radiator. The relatively small fan in conjunction with tall radiators also seems like it would benefit from a shroud.