Porsche 911 fan kit , which crank pulley ?
Hi
i have a Porsche 911 fan kit, with a real 911 fan/shroud on a type 1 engine , the kit came with a 5 inch power pulley, would like to know which pulley size you are using
options i am considering are
Gene Berg steel 1:1 pulley 4-1/4"OD
5 1/4 dry sump pulley
6 inch power pulley
7 inch stock pulley
i would like to try how they affect engine cooling and hp increase/loss
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