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| Registered Join Date: Aug 2014 
					Posts: 223
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				Cooling Fan
			 
			I noticed my engine had an electric cooling fan above the main fan shroud that looks like it pushes air over the heat exchangers. Do I need this? Does it just make the heating more efficient or does it actually play some part in engine cooling?
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|  02-23-2015, 09:24 AM | 
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| Registered Join Date: Jul 2001 Location: Portland Oregon 
					Posts: 7,007
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			That fan blows air through the heat exchangers to provide more consistent levels of heat & defrost in the cabin as well as keeping the headers cooler.
		 
				__________________ Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com | ||
|  02-23-2015, 10:01 AM | 
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| Registered Join Date: Aug 2014 
					Posts: 223
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			OK, understood, so do I need them if I am prepared to accept less consistent cabin heating?
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|  02-23-2015, 10:09 AM | 
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| Registered Join Date: Jul 2012 Location: Simi Valley, Ca. 
					Posts: 265
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			Where do you live. It's 85 degrees in Los Angeles today and Zero degrees in New York. I'd leave it in. As Steve states above, it cools the headers. Bob B | ||
|  02-23-2015, 02:57 PM | 
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| Registered Join Date: Jul 2001 Location: Lawrenceville GA 30045 
					Posts: 7,384
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			Look up "backdating heat" threads for more information on the blower and associated parts removal.
		 
				__________________ Mark '83 SC Targa - since 5/5/2001 '06 911 S Aerokit - from 5/2/2016 to 11/14/2018 '11 911 S w/PDK - from 7/2/2021 to ??? | ||
|  03-05-2015, 07:05 PM | 
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| Registered Join Date: Aug 2014 
					Posts: 223
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			Thanks, I read a bunch or posts about heat backdating so I know what I need to do. One question, where can you get the left and right ducts to backdate your heat. Also, does anyone make a left duct that does not have the "cutout" for the distributor as I wont have a distributor on my build?
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|  03-10-2015, 11:16 AM | 
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| Straight shooter | 
			You can get the back date parts right from our gracious host. Right Side Part Number: 911-106-322-01-PH - Pelican Parts - Product Information: 911-106-322-01-PH Left Side Part Number: 930-106-321-01-PH - Pelican Parts - Product Information: 930-106-321-01-PH 
				__________________ “Of the value traps, the most widespread and pernicious is value rigidity. This is an inability to revalue what one sees because of commitment to previous values. In motorcycle maintenance, you MUST rediscover what you do as you go. Rigid values makes this impossible.” ― Robert M. Pirsig, Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values | ||
|  03-16-2015, 11:49 AM | 
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