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Old 03-03-2008, 11:32 PM   #26 (permalink)
boxchain
I'd rather be biking
 
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Join Date: Feb 2008
Location: New Orleans, LA, US Minor Outlying Islands
Posts: 127

Lexie - '98 Honda Civic LX
90 day: 39.46 mpg (US)

Beater Hauler - '92 Isuzu Pickup

Rentaclipse - '08 Mitsubishi Eclipse ?
90 day: 28.28 mpg (US)

Fahrt - '83 BMW R80 ST
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Quote:
Originally Posted by MetroMPG View Post
I think basjoos has pointed out in another thread that you're better off (for best aero) blocking the upper opening and leaving the bottom one partially open, rather than vice versa. If aesthetics and SWMBO permits.
Interesting, but the 5th gen civ that basjoos and others have don't really have much of an upper opening. Which was his point, now that I found the statement (on GS)

I haven't found Cd figures for each model of Civic, but the 5G is apparently .31-.33 and the 6G is ~.36. So I have more work to do

My problem is that I have to sit at too many stoplights and I live in a hot climate, where it's 90F from April to October, AC is a necessity, and cooling is the issue. My thinking is that the upper opening is more beneficial to cooling, and smaller, so it would be the one to keep in this case. I'm thinking of an AndrewJ style airdam and leaving the upper grill as is. Next week when I start getting daylight after w*rk I'll look at the radiator/airflow setup more closely.

My 92 Accord was a chronic overheater, the radiator leaked, then a hose blew, then the water pump leaked, and one of the radiator fans never worked. I had to turn the AC on to get the condenser fan to cool the engine in traffic.

I think my first mod will be a killswitch (thinking EFI as it's the fuel we're trying not to use) anyway, but as this is a similar car in a similar climate I'm following this one with particular interest.
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