Reduce under the hood temps?

[CSG Mike]

Originally Posted by Ace-0086

Hello Mike,
Yes, it does help temp drop temps when park and sit in the pit lane.
Can you tell me how to test the "reducing airflow through the radiator."?
I would like to test it.

Thank you

Ace

Ace,

Tape string/yarn at the back of the hood where it is raised, and you'll see that the air is going into the engine bay, instead of exiting out. This happens because there is a high pressure zone where the hood meets the windshield, and the net effect is that LESS air is being conducted through the radiator.

You can log engine and oil temps through the OBD2 port

-Mike

[AceHeader-MT]

Originally Posted by CSG Mike

Ace,

Tape string/yarn at the back of the hood where it is raised, and you'll see that the air is going into the engine bay, instead of exiting out. This happens because there is a high pressure zone where the hood meets the windshield, and the net effect is that LESS air is being conducted through the radiator.

You can log engine and oil temps through the OBD2 port

-Mike

Okay, I will take video of testing at next practice at Dec/14/2014.

Also I am looking for ""How to data log?" Do you have kit to sell?

Ace

[CSG Mike]

Originally Posted by Ace-0086

Okay, I will take video of testing at next practice at Dec/14/2014.

Also I am looking for ""How to data log?" Do you have kit to sell?

Ace

Cheapest way is to use a Bluetooth OBDII module with an android app "Torque".

We use a Aim solo DL in our cars.

[rx3]

You still have plenty of vents underneath the car, so the flow through the radiator may not necessarily be reduced, but in order to increase the flow through the radiator you would need vents on the hood and they should be closer to the bumper than to the windshield.

(the red areas/lines show low pressure regions.)

This should work:
http://www.carbon-fiber-hoods.com/co...by_Seibon.html

[rx3]

If you want a more permanent gauge than your phone (to see your temperatures) you could install this: http://www.ultra-gauge.com/ultragauge/

(I have done opposite on my daily driver, I installed a grill block to reduce my fuel consumption and accelerate engine heating in the winter and use it to watch my temperatures and even though I blocked almost the entire grill I can barely get the cooling fan to turn on in a traffic jam.)

[mike the snake]

How effective would cutting out the fender trim pieces so they vented air?

I've read people saying they can feel a lot of hot air escaping, but what about at speed?

I'm planning on trying this before going for a vented hood.

[rx3]

I actually wanted to post this in this thread.
http://www.ft86club.com/forums/showp...23&postcount=2

If you added a lip just before the panel underneath the engine you would provoke low pressure region behind that lip, which would suck air out of the engine compartment (if you removed the panel).

(Just as this spoiler/lip on the trunk provoke as low pressure region behind it:
)

This wouldn't be aerodynamically efficient but as long as you don't care about top speed or fuel economy it wouldn't matter.

[Lonewolf]

Originally Posted by mike the snake

How effective would cutting out the fender trim pieces so they vented air?

I've read people saying they can feel a lot of hot air escaping, but what about at speed?

I'm planning on trying this before going for a vented hood.

I would love to see someone try out some options with the fender vents being functional as well...I think Prova's fender vents are actually wire mesh, but you still need to cut out and enlarge the open area behind them...

[BRZPDX]

I'm also curious with fender vent cut out. if anyone has photos of where they cut out, that'll be super helpful!

[wparsons]

Originally Posted by Ace-0086

Okay, I will take video of testing at next practice at Dec/14/2014.

Also I am looking for ""How to data log?" Do you have kit to sell?

Ace

I'm confused... you claim the IAT's dropped 10* on your other thread, how do you know that if you're not logging them??

[AceHeader-MT]

Originally Posted by wparsons

I'm confused... you claim the IAT's dropped 10* on your other thread, how do you know that if you're not logging them??

I use OBDII reader on my iphone.