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I disagree, Matt.Matt [exz3owner said:@ Fri Sep 15, 2006 4:30 pm]/\/\
agreed. If you have overheating issues at idle, then this is the perfect mod for you.
If you have overheating issues while driving at higher rates of speed (over 45 mi/hr) these spacers actually have the reverse effect on cooling. air actually goes into the engine bay at the base of the windshield lessening the pressure differential behind the radiator.
Do you trust someone who breaks the speed limit laws?!...over 110 my car feels faster now that i took them off...
IM sure he ment while at WSIR doing buck ten down the main straight....
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ok. I'll only say one more thing about this to keep this respectful. Physics applies to road going cars as well as race cars.I disagree, Matt.Matt [exz3owner said:@ Fri Sep 15, 2006 4:30 pm]/\/\
agreed. If you have overheating issues at idle, then this is the perfect mod for you.
If you have overheating issues while driving at higher rates of speed (over 45 mi/hr) these spacers actually have the reverse effect on cooling. air actually goes into the engine bay at the base of the windshield lessening the pressure differential behind the radiator.
For us mere mortals who drive our cars primarily on public streets, this setup allows heat to escape the engine bay rather than soak the engine when resting at stop lights. While driving at speed, the high pressure zone at the base of the windshield forces heat out the raised side corners of the hood.
The difference here is that the pressure changes over the hood. THe evo vents are in the middle which is a low pressure area so it vaccums the air out of the engine. as you approach the windshrild the pressure increases, so where the hood riser is open you have a lot of high pressure air trying to force it's way in.i'm curios about lifting hood too. so if at speed, air flow thru radiator should eventually escape down the bottom,right? now with a raised hood,at speeds, wouldn't the bypassing air flowing over the windshield only vacuum out the air from the engine... its the same idea as those reverse vented hood scoops on EVOs.
Wait: let me get my Miata and put some yarn on it.^^ exactly.
like matt said, tape some lengths of yarn to your hood, even without the hood risers and you'll learn a lot about the aerodynamics of your hood!