The bellows is connected to a thin wire that is connected to the linkage between the cooling flaps. One flap is open at all times, one flap is open when the engine is warming up and the other is closed - and - vice versa once the engine is warm.
Would the engine run cooler if both flaps were open after engine warmed up ??
See pic and refer to area labled 1 and 2.
Thanks!
Full Version: flap question ?
Nope!
If you "open" the flap on the pass side of the engine, air will bypass the oil cooler and you'll get a real "hot" engine.
If you "open" the flap on the pass side of the engine, air will bypass the oil cooler and you'll get a real "hot" engine.
oh - so during warm up the passenger flap is open in order to bypass the oil cooler in order to get the engine warm faster - then - once the engine is warm - the passenger flap closes and the drivers flap opens to allow the oil cooler to do its job. thanks
They work in unison. They both open or close. They are connected to a common control rod. The one on the drivers side looks open a little. It is held in a different position than the one on the Passenger side which has the oil cooler. There is a bellows thermostat under the motor with a cable to activate the flaps. When cold, the bellows is shorter pulling the flaps. When it is hot, it expands releasing the flaps. If the cable is cut, the flaps are in a position for maximum cooling (normal operation)
Mark
Mark
A better pic of the area - no tin.
see how the one on the right is ducting air to the cooler?
when it is closed.. 100 percent goes to the cyinders....
when it is closed.. 100 percent goes to the cyinders....
If you look carefully at the flaps linkage, you'll see that they work in "opposite" ways. The one on the left drops down when the engine cools off, while the one on the right rises.
Now look more carefully at the flaps themselves. Particularly the one on the right side. Notice that the bottom of the flap, when the flap is open, does not meet with the part that sits on top of the oil cooler. In fact, it forms a nice little duct to split some air off and shove it through the cooler. When the flap closes, then bottom end of it blocks off most (all?) of the pathway for air to get into the cooler.
If you can find an engine with the top engine tin off, move the flaps around for a while. You'll see what I mean.
--DD
Now look more carefully at the flaps themselves. Particularly the one on the right side. Notice that the bottom of the flap, when the flap is open, does not meet with the part that sits on top of the oil cooler. In fact, it forms a nice little duct to split some air off and shove it through the cooler. When the flap closes, then bottom end of it blocks off most (all?) of the pathway for air to get into the cooler.
If you can find an engine with the top engine tin off, move the flaps around for a while. You'll see what I mean.
--DD
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