Heat soak - vented hood options that are not "louvered"

phunk · 11-11-2013, 01:56 PM

If you drive with your fuel pump access covers off, you will generally feel very warm air coming in. This is because the air under the car is the air that came in through the radiator and around the engine.

I think that a scoop on a hood is a bad idea unless it is used to feed the air intake filters in a sealed manner. Vents will relieve pressure in the engine bay, allowing heat to escape out the top, hopefully allowing more air through the bumper/coolers while reducing air pressure under the car. A scoop will just try and cram more air in, and if it does, it will probably only serve to increase engine bay pressure, possibly reducing radiator flow, and putting more air under the car.

Sh0velMan · 11-11-2013, 03:37 PM

Quote:

Originally Posted by phunk

If you drive with your fuel pump access covers off, you will generally feel very warm air coming in. This is because the air under the car is the air that came in through the radiator and around the engine.

lol funny you mention this.

There's a few mounting holes on the tranny tunnel near the shifter area that blow air up into my forearm at speed. Freaked me the **** out the first few times I drove it at speed hahaha.

roplusbee · 11-11-2013, 04:39 PM

Quote:

Originally Posted by Sh0velMan

lol funny you mention this.

There's a few mounting holes on the tranny tunnel near the shifter area that blow air up into my forearm at speed. Freaked me the **** out the first few times I drove it at speed hahaha.

Similar to your situation, that hot air makes it in behind my dash. I am a big fan of the center exit louvres, but only on dated pieces. I.E. VIS Racing Hoods for older S13s and GT-Rs. That is one that I would not ponder over and pull the trigger. As long as the vent is far enough forward of course.

ENT-Z · 11-12-2013, 09:11 PM

I was possibly considering this hood. Thoughts on this venting pattern for FI?

Welcome to Extreme Dimensions :: Inventory Item :: 2009-2013 Nissan 370Z Duraflex JP-R Hood - 1 Piece

11-11-2013, 01:56 PM	#1 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,669 Drives: 370 Rep Power: 974725	If you drive with your fuel pump access covers off, you will generally feel very warm air coming in. This is because the air under the car is the air that came in through the radiator and around the engine. I think that a scoop on a hood is a bad idea unless it is used to feed the air intake filters in a sealed manner. Vents will relieve pressure in the engine bay, allowing heat to escape out the top, hopefully allowing more air through the bumper/coolers while reducing air pressure under the car. A scoop will just try and cram more air in, and if it does, it will probably only serve to increase engine bay pressure, possibly reducing radiator flow, and putting more air under the car. SouthArk370Z, Chuck33079 and MyKindaGuise like this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

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11-12-2013, 09:11 PM	#4 (permalink)
ENT-Z Enthusiast Member Join Date: Feb 2009 Location: St. Louis, MO Posts: 460 Drives: 09 MB 6MT 370Z Rep Power: 18	I was possibly considering this hood. Thoughts on this venting pattern for FI? Welcome to Extreme Dimensions :: Inventory Item :: 2009-2013 Nissan 370Z Duraflex JP-R Hood - 1 Piece