 WHAT DOES THIS DO? - closing flap for air return part#33 |
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| dflesburg |
 Jun 12 2009, 07:29 AM
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#1
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Senior Member  Group: Members Posts: 1,722 Joined: 6-April 04 From: Warm and Cheerful Centerville Ohio Member No.: 1,896 Region Association: None  |
closing flap for air return part#33
What does this do besides fall off when you don't have the return guides (S tubes) on? What happens if you dont have them installed? Does anyone have a diagram of how the air flows in a type 4? There is a great thread on Pelican by DD that covers how air from blower fan pushes air into the system but what does the cooling shroud have to do with it? http://forums.pelicanparts.com/showthread.php?threadid=80853 |
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| SLITS |
Jun 12 2009, 12:36 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  |
Since I didn't have a diagram of #33, I had no idea of what you were talking about.
The flapper is designed to close when the heater blower is on to avoid over-riding the air flow from the impeller (motor cooling fan) at idle RPMs. The engineers figured the input from the heater blower would cause a disturbance in the cooling of the engine at lo RPMs. Once you come up in RPMs, the impeller puts out far more air than the heater blower and forces the flaps open. Heater blower is only for lo RPM situations. |
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Posts in this topic
dflesburg WHAT DOES THIS DO? - closing flap for air return part#33 Jun 12 2009, 07:29 AM
dflesburg So since nobody can tell me whats going on on the ... Jun 12 2009, 12:26 PM jhadler You're referring to the flapper at the base of... Jun 12 2009, 12:34 PM dflesburg If anyone has a couple of these I need two.
Thank... Jun 12 2009, 12:48 PM
dflesburg This is what I need...
Part # 33 on this diagram ... Jun 13 2009, 09:48 AM |
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