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up-fixing der car(ma)
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Optimal fan/alternator RPM ?
I was looking over the various pulleys and I was wondering what the optimal fan RPM is, for both the 226mm and 245mm housings? For a race motor that will be in the 6.5-8k range all the time.
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Scott Kinder kindersport @ gmail.com |
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09-09-2006, 10:19 PM
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Registered
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
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Scott,
On a cool, foggy day at Laguna Seca, there isn’t an issue. On a typical nice cool day at Willow Springs, say only 103F, you can’t turn the fan fast enough.  Since both SCCA and PCA (and most everyone follows those rules to a degree) allow water squirters, the “Rubbermaid Solution”is an inexpensive and very effective solution. For my son’s track car (GT2 914-6) I’m integrating it into the cool suit system. No sense letting the competitors in on the secret.   To answer your question, I carry the several pulleys, fans & run-in belts and use the combination suitable for the conditions. Think of it as “carb jets for the engine cooling.” Best, Grady 
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09-10-2006, 09:09 AM
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