h a l f b a k e r yVeni, vedi, fish velocipede
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If a deflector baffle is placed below engine, then it can divert air on to the engine when car is cruising ahead with speed. This can give effect of forced air cooling. This system could help cooling engine in tropical zones in addition to conventional radiator system.
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That's what the grill is for. |
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Forcing too much air into the engine compartment is just going to increase drag and lower your gas mileage. Furthermore, you'll be catching every water puddle and loose stone you drive over. |
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The old air cooled Volkswagen Kombies (beloved of surfers and hippies) overheat in Australia, so you often see them with scoops added at the SIDE of the vehicle. |
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Pheonix: Older (91 - 95) Z-24 Cavaliers had a scoop similar to this, and damn if it didn't funnel every little rock on the road into the radiator.. 3 TIMES I had to replace that freakin thing.. |
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I generally agree with the "bad idea" crowd on this one. Could this be turned around to create a low pressure area in the engine compartment thus allowing more air to flow through the radiator? That is, assuming that more air flow would help when you're already 'cruising ahead with speed'. In Phoenix, Arizona, we tend to need more cooling help when the car isn't moving and the temperature is 115 F. |
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If the suggested cooling effect is due to air flowing across the engine block, then it seems that it might be more effective to add cooling fins to the block and cylinder heads as if it were an air cooled motor. |
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A higher capacity/more efficient radiator would likely be the best solution though. |
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half: Do you suggest to say that we should provide quick exit way for already heated air in the engine room.
How about diverting this hot air on wind screen?
Higher capacity radiators are costly and may not fit in to space available in the car. |
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You already have one of these in your car, its called : |
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a) an airbox, often sits in the wing of the car and increases the air intake pressure as your speed increases, kind of like a mild supercharger. |
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b)a radiator grill, that happy smily face at the front of your car. |
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Look on any old muscle car, there is a reason why the hood scoop is backwards. Fast moving air over the hood creates low pressure, this in turn draws air out of the engine bay, all without the need to bash your radiator to pieces with random debris. |
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[phoenix] On the Ford Fiesta MK1 and similar the radiator grill had aerodynamic slats deliberately angled down, designed to REDUCE the quantity of air at high speeds as less cooling was required due to the relatively large radiator versus small engine cc. |
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Early BMC Mini's (transverse engine FWD) blew air out under the wheel arch through a side mounted radiator using a two bladed fan with thermo magnetic clutch to reduce unnecessary loading on the engine when not needed. The wheel arch being a low pressure area also. In fact when BMC whent to the Clubman bodyshell where they could have easily fitted a front radiator I believe they stuck with the side mounted one because of its greater efficiency? |
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tbk the reason the hood scope on back wards on old mucle cars is the base of the windshiedls is a high pressure area at speed. the winston cup nascar stock cars intake the engine air at the base of windsheild as this gives them maximum ram air affect with minimum drag. a front facing scoop is a big sorce of drag at 190 mph plus |
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