 Air Flaps, What is that for? |
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| kkid |
 Jun 8 2010, 11:39 AM
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#1
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Member  Group: Members Posts: 343 Joined: 18-December 07 From: Oakland, CA Member No.: 8,483 Region Association: Northern California  |
Hello folks,
Here is a newbie question that I always wonder. The flaps that attached under sides of fan housing(#19 & #20 in the pic).  My car is missing one of them. I am wondering what the problem would be without it. How do they work anyway? When do they open and close? Thanks in advance for the info and knowledge. |
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| SLITS |
Jun 8 2010, 12:08 PM
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
And the Porsh enginers figured that at idle the heater blower would override the output of the egin mounted blower and disrupt airflow to the kylinders.
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| realred914 |
Jun 8 2010, 01:14 PM
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#3
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Senior Member Group: Retired Members Posts: 1,086 Joined: 1-April 10 From: california Member No.: 11,541 Region Association: None |
QUOTE(SLITS @ Jun 8 2010, 11:08 AM)  And the Porsh enginers figured that at idle the heater blower would override the output of the egin mounted blower and disrupt airflow to the kylinders. yup, at idle the engine fan maybe overpowered by the heater fan, and that would cuase hot air to be directed to the engines cooling needs. these act as oneway vlaves to prevent back flow of hot air into the engines fan. Id be inclined to find some and hook them up. WARNING!!! do not attempt to block them off, this will cause over heating fo your heater exchangers. the exchangers must always have cool air blowing thru them, hence this opening in the fan house to feed them. even with the heater tunred OFF, air still blows thru the exchangers, only it is dumped out over the heater flap vlave rather than fed to the cockpit. always allow for constant air flow thru your heater exchnagers, do not block this port, however you should ad the one way valves back. good luck |
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Posts in this topic
kkid Air Flaps Jun 8 2010, 11:39 AM
904svo They are used for heater air flow control when the... Jun 8 2010, 11:51 AM
detoxcowboy you can buy used or aluminum repro's but you h... Jun 8 2010, 02:09 PM |
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