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JaransonT3@aol.com wrote: > According to Bill Fisher's book " How to Hotrod VW Engines", the beetle fan > moves 1260 cfm at 4,000 rpm and the T3 fan is the same. He also states a HP > required for teh fan of 3.5 to 5.5 at 3000 rpm. But there are several different sizes type1 fans! The Doghouse style fan from 1971-upwards is bigger but I cannot remember how much air it moves. It could be something like 540 liters per minute @ 4500 rpm vs. 450 liters on the older non-doghouse style. I'm not sure whether these rpms are fan rpms or crank rpms, the book didnt say. PerL 73 Variant L ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe