How does heat exit engine bay?
Drifting
Joined: Nov 2016
Posts: 1,660
Likes: 365
From: SF Bay Area
As an FYI, cutting the rear hood seals might lower temperatures at low speed, but would introduce air under the hood at higher speeds (I believe about 30+ mph) because the base of the windshield is a high pressure zone. Air underneath the hood means more lift and drag. There is a reason cowl induction hoods are named induction, because they bring in air from the base of the windshield.
Heel & Toe
Joined: Nov 2017
Posts: 23
Likes: 3
Heel & Toe
Joined: Nov 2017
Posts: 23
Likes: 3
Heat under the hood
As an FYI, cutting the rear hood seals might lower temperatures at low speed, but would introduce air under the hood at higher speeds (I believe about 30+ mph) because the base of the windshield is a high pressure zone. Air underneath the hood means more lift and drag. There is a reason cowl induction hoods are named induction, because they bring in air from the base of the windshield.
Drifting
Joined: Nov 2016
Posts: 1,660
Likes: 365
From: SF Bay Area
I have been contemplating this now for several days. Under highway speeds the the openings in the seals will draw air into the engine compartment so therefore I do not believe there will be a hood lift.. I had a scoop on my old pickup truck with the opening in the back and if there was a leaf near that opening, the air would suck the leaf into the the engine... There is just too much air follow under the car. The opening(s) will provide more air flow into the engine area and also vent when is parked. The question is where the openings would be more effective and safe just in case I get rain on. Just my thoughts
Melting Slicks
Joined: Jul 2010
Posts: 2,793
Likes: 333
From: Leesburg Fl
2018 C5 of Year Finalist
St. Jude Donor '14,'18
Don't latch the hood down.
This reminds me back in the early '80s outside of Chicago I had a rv trailer parked at a campground with a lake. On the weekends the city folk would come for the day and immediately opened their hoods. Never knew why.
This reminds me back in the early '80s outside of Chicago I had a rv trailer parked at a campground with a lake. On the weekends the city folk would come for the day and immediately opened their hoods. Never knew why.
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Drifting
Joined: Nov 2016
Posts: 1,660
Likes: 365
From: SF Bay Area
Heel & Toe
Joined: Nov 2017
Posts: 23
Likes: 3
Drifting
Joined: Nov 2016
Posts: 1,660
Likes: 365
From: SF Bay Area
The hoods with three vents have vents for the headers. The Track-spec kit also comes with three vents, two at the side for the headers. However, if that is your only issue, just pop your hood open when you park it if you're so concerned about it. I wouldn't worry about it.
