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In traffic, the radiator fan should bottom feed a little bit if there is insufficient air flow through the bumper. I would be careful of how well it performs in summer though. After all, the pavement will be around 150+ and drawing air in from the bottom will do you little good at those temperatures. It may well be that in summer you need to eliminate the grille block due to your location (Austin Texas I assume). Remember that it is not only the radiator you need to cool but the engine bay as well. Aluminum engines shed heat very efficiently and the cooling system is sized to take advantage of that fact. Take away the block's ability to act as a radiator and you could have issues (this is also why you need to keep the engine clean). Theoretically at least, you could compensate somewhat with a larger radiator from a V6 car of some kind but you still need to maintain air flow out of the engine bay so don't get too crazy with a belly pan either.
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No green technology will ever make a substantive environmental impact until it is economically viable for most people to use it. This must be from a reduction in net cost of the new technology, not an increase in the cost of the old technology through taxation
(Note: the car sees 100% city driving and is EPA rated at 37 mpg city)
Last edited by Jim-Bob; 01-01-2011 at 05:37 AM..
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