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      04-10-2013, 02:19 PM   #8
Beedub
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Drives: 2007 Z4 M roadster vt2-500
Join Date: Sep 2007
Location: UK

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Quote:
Originally Posted by yousefnjr View Post
AKAIK the AC compressor is belt driven and has a clutch, which closes when you turn your AC on, otherwise the pulley is free-wheeling. I doubt the lines running the refrigerant have any cooling effect on under-hood temps.
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