Engine bay cooling improvements? DIY?

DIGItonium

It's super hot out at 109F today, and the car is stuck in the garage. Last week I was working on one of the turn signal bulbs and felt the intense heat coming from the engine bay. I'd like to see if anyone know of DIY mods or ways to increase airflow to the engine to lower engine bay temperatures.

All I've done so far is remove the fang covers, and it seems like the car is not "losing" power as often. In fact, 1+ hour drive in 95+ F ambient temps is actually much more enjoyable now.

How about fender lining vents? I see DIY mods for brake cooling, but can it improve engine bay temps as well?

I thought about vented hoods, but they don't look that great. DIY mod like SIMOTA is nice since it retains the OEM hood, but I'd like additional or larger vents of some sort. Whatever is functional.

Maybe I'm just OCD about it...

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theDreamer

Better cooling under the hood would be great, or more airflow.

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theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN
theDreamer's Silvia // URAS // GREDDY
Houston Zs // Facebook // Twitter // Instagram

DIGItonium

[OFFTOPIC]
BTW, I was in Houston all of this week and visited Baker Nissan. It was nice to meet Brad, Paul, and Justin. Can't wait to get the TT kit from Sam so I can ship the car.
[/OFFTOPIC]

Yea, short of getting a CF hood I think there's plenty of heat to remove.

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theDreamer

And you did not let me know? Though I was pretty busy this week, when you are scheduled to get your kit?
A good hood design can help with air flow through the car but only to a certain degree.

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theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN
theDreamer's Silvia // URAS // GREDDY
Houston Zs // Facebook // Twitter // Instagram

DIGItonium

Haha Paul called Justin as he was getting off work. Heard it's supposed to be sometime this week.

Wonder if anyone tried making a vent in the fender well.

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DIGItonium

Today I decided to enlarge the fang duct. I used a Dremel to cut out the remaining parts of the opening. It doesn't look too bad.

I'm going to research vents for the fender well cover. My fat tires already shredded a tiny portion of the cover. It'll be nice to get an after market one that's a bit stiffer with vents. Do you guys remember the preproduction 370Z? It had vented wheel well liners. That's something I'd like to get my hands on:


Here are pictures of the enlarged fang vent:

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Liquid_G

I've been thinking of busting out the dremel and making some vents of my own back there.. Wonder if it would do any good?

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Zat_Zuma

Well this is part of my solution
1/2" drill bit and lots of them






Added a SPAL 330 cfm 6.5" fan with temp controller to the oil cooler to help control oil temps and air flow through the cooler and fender liner.

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[B]2009 & 2017 370Z Touring Sport Autos SOLD

zzdudaka

Did this help at all?
Water temps never get to the middle dot even on a long trip. Never seen any issues there.
Oil however is another issue. with the gtm sc oil temps quickly get to 220 in the summer and running down the interstate at 80mph i am running at 235-240 on the oil. Seems high to me even especially with the 24 row setrab cooler.

Wonder if you could add some ventalation to the cowl where the wipers sit to help incoming air pass over the engine and over the car? Not that this would help the oil temps much.

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Happy Z Motoring! zzdudaka
2010 40th Anniversary 370Z #357

DIGItonium

While looking for wheel well liner with vents, here's another mod I'm looking for: center bumper air duct.

I contacted Z1 to see if they can get something that fits the 370Z. Hopefully it doesn't look too tacky.



[EDIT] Z1's response is none available, but there is no guarantee of this one fitting. I requested measurements if they have one in stock. It would need to be flipped upside down to follow the contour of our bumper. If all else fails, I need to find another solution (some sort of box with trim bezel to hide the cut out).

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KusoSama

If you're in a dry climate, you could vent your hood a bit. Maybe go as far as a vent with a fan to pull heat out.

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K&N Drop-in Filters || Invidia Gemini CBE || ERZ High Flow Cats || Uprev || 3.54 Final Drive

efuseakay

Hood with inlet/outlet vents. Inlet vents closer to the nose/outlet vents closer to the windshield?

98intrigue

I have my fender liner vented on the passenger side where my oil cooler is mounted. I also removed the fang covers and have aluminum ducting directing all the air into the passenger side fang go straight to the oil cooler. My car also has 2 custom Flexalite fans: 10" and 18".

I'm with you on preferring the OEM hood, but I still need to lower the engine bay temps, so now I'm looking into the VIS AMS hood.

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CPTOBVI

it would cost less, be more effective, and unique if you build your own custom radiator shroud and hood louvers that work together as one cooling system. this way the air that the fan brings-in won't touch the motor.. the air passing through the radiator will have pressure pulling it in 1 direction = efficient cooling. this will also benefit downforce character because now you have the entering-air being pulled upward and out INSTEAD of going underneath the chassis and through the wheel wells working against the df and causing turbulence.

shroud and compartment:


louvers:

98intrigue

My fans are pushers now, not pullers. With the downpipe crossing the front of the engine, there is no room for pullers. Unfortunately, this idea won't work.

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