'Cooling flaps' in top of engine tin, Cable activated? How do these function? Options

[johnnie5]

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...

[ME733]

(IMG:style_emoticons/default/popcorn[1].gif) ..well ..NOT having any air flaps. Diverters at all.....will not effect air going over the oil cooler....the air is pressurized..and as such WILL equalize in the sheetmetal back to front and go over the cylinders and oil cooler and out. I have never had ANY repeat ANY oil cooling problems , by removing ALL the crap that is in the way, of restricting air flow to the cylinders..(.THE DAMN FLAPS.) The engine , cools ,revs better as the compacted air has less restriction, and or cavation.(compacting air to the point that air flow virtually ceases) . When your cast aluminum fan blows up (as some one in a recient post had )...it is due from the force , restriction, cavation, to such a degree that the AIR PRESSURE will break aluminum fins off the air impeller/blower. This is why the racers who turn ..LOTS of rpm,s remove fan blades. To prevent cavation. to keep air flow going at extreme rpm,s. Porsche race cars solved the problem by having air blowers/ fans, with FEWER blades... all that force , of air inside the air housings, against the fan blades ALSO COSTS HORSEPOWER, Now with all this said I do not build engines for people that sit in traffic, for hours, and turn only 3500 rpms. with 10-w-30-oil., ,.I.M.E. no flaps - no problem. However; If there are those owners of 914s who want their cars to be totally stock as relates to air diverters, flappers and are concerned that modofications MAY affect the cooling of their engine then please disreguard ALL the information in this post. By all means do it your way.It,s your money, and time. (IMG:style_emoticons/default/popcorn[1].gif)

[ericread]

..well ..NOT having any air flaps. Diverters at all.....will not effect air going over the oil cooler....the air is pressurized..and as such WILL equalize in the sheetmetal back to front and go over the cylinders and oil cooler and out.

My $.02.

The above statement is not correct. Air is STUPID.

Unlike water, which will pressurize and equally flow, air will just keep pounding and build back pressure.

In designing under-floor cooling systems for computer data centers, we demonstrated time and time again that a high powered air flow pointing to the floor will not push air equally throughout the room. It will continue to pound until you provide air guides that properly direct the air. The flaps in the 914 engine provide the air guides necessary to properly direct the air flow. If you remove these, you need to create a new set of air-guides.

Eric Read