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

Chuck33079 · 11-10-2013, 04:46 PM

The problem on the Z is how little room there is between the motor and radiator. The air almost has to make a 90 degree turn to go out a vent placed there on the hood. A deflector on the timing cover to split the airflow to either side and two vents basically over where the intake pipes run may be more useful. Until we get some guys willing to tape yarn all over their hoods to check airflow at speed, we're just guessing.

synolimit · 11-10-2013, 04:54 PM

Quote:

Originally Posted by Chuck33079

The problem on the Z is how little room there is between the motor and radiator. The air almost has to make a 90 degree turn to go out a vent placed there on the hood. A deflector on the timing cover to split the airflow to either side and two vents basically over where the intake pipes run may be more useful. Until we get some guys willing to tape yarn all over their hoods to check airflow at speed, we're just guessing.

Doesn't matter, it works same way the air hits the motor and has to 90* down under the car. Airs light, it can change direction fast just like a stillen CAI bends. Heat rises and the hot air hitting the engine has no place to go but up or down and under the car. Both of which get the heat moving and out with a properly placed vent. And I did the yarn test on mine.

Chuck33079 · 11-10-2013, 04:56 PM

Quote:

Originally Posted by synolimit

Doesn't matter, it works same way the air hits the motor and has to 90* down under the car. Airs light, it can change direction fast just like a stillen CAI bends. Heat rises and the hot air hitting the engine has no place to go but up or down and under the car. Both of which get the heat moving and out with a properly placed vent. And I did the yarn test on mine.

The gentler the change of direction, the better the flow.

synolimit · 11-10-2013, 05:07 PM

Quote:

Originally Posted by Chuck33079

The gentler the change of direction, the better the flow.

True. But like you said, it's really all we have to work with, with the little room we have. I haven't done scientific testing but the yarn seems to flow how I want and I haven't been able to exceed 218 degrees on the oil with hard driving for like an hour straight on fast twisty country roads in the middle of summer . Next summer when the tracks open we'll see whats what. But I'm hoping Mitsubishi and Chevy did the work for us and hell the evo doesn't have much room either...

11-10-2013, 04:46 PM	#1 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29540	The problem on the Z is how little room there is between the motor and radiator. The air almost has to make a 90 degree turn to go out a vent placed there on the hood. A deflector on the timing cover to split the airflow to either side and two vents basically over where the intake pipes run may be more useful. Until we get some guys willing to tape yarn all over their hoods to check airflow at speed, we're just guessing. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

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