'Cooling flaps' in top of engine tin, Cable activated? How do these function? |
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'Cooling flaps' in top of engine tin, Cable activated? How do these function? |
johnnie5 |
Feb 6 2009, 01:38 PM
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#1
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914 lover Group: Members Posts: 375 Joined: 14-October 08 From: San Diego, CA Member No.: 9,644 Region Association: Southern California |
Just as the title states....
When I was dressing my new motor I noticed these 'reverse' flaps. But have no idea what cable would hook up to the flapper arm, or where it would come from? Or what would activate it? Someone please enlighten me... |
maf914 |
Feb 6 2009, 03:27 PM
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#2
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Not a Guru! Group: Members Posts: 3,049 Joined: 30-April 03 From: Central Florida Member No.: 632 Region Association: None |
A key feature of the spring loaded cooling flaps is that when the thermostat heats up the bellows expands and relaxes the cable which is connected to the flaps. The engine is now warm and it allows the flaps to go to their default position. This position directs the maximum amount of air through the oil cooler for maximum engine cooling.
Should the cable break or not be installed the spring loaded flaps will go to this position. In warm climate areas some people leave off the thermostat and cable and run the flaps in the default position for max cooling. When the cable is drawn tight by the cold thermostat it pulls the spring loaded flaps into a position that allows most of the air to bypass the oil cooler and travel primarily to the cylinders. If the flaps are not present the result will be similar, limited flow through the oil cooler. |
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