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Old 12-19-2008, 05:11 PM   #23 (permalink)
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vectra a - '95 Opel Vectra GLS
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would it be worth it building an extraction ducts behind the radiator?

i've got quire some clearence but i don't think i could get an ideal hight length ratio as shown in the drawing above...

is there a similar ratio for the exit duct and is this ratio constant ?

like when the front duct length would be 1/2 of the radiator height would the ideal intake height be 1/3 of the rad height?
aer·o·dy·nam·ics: the science of passing gass

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