I have a feeling that the 1.5" gap that you left between the fan and the
radiator is cutting down considerably on the effectiveness of the fan. The
air really doesn't want to go through the radiator ... it would much rather
"squirt" out the gap between the fan and the radiator... even looping back
around into the fan intake and cycling over and over.
I believe that's why most production cars have the fans shrouded directly to
the radiator.
Ducting or direct contact between the fan and the radiator works best. BTDT
Cheers,
Richard
>Also, the current 10" fan I have installed is rated at 680 CFM, and just
desn't
>seem to have much affect, so I'm going to upgrade to a bigger fan with
1000+CFM.
>BTW - I installed the fan inside my bugeye bonnet shroud, so with the bonnet
>closed, the fan is located about 1.5" infront of the radiator core.
>
> - Bryan
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