The Big Fat Track Car Cooling Thread

ddozier

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Keep in mind that there is little to no protection for the coolers when they are placed outside of the frame rails, If you have a minor accident in the front end you will likely loose a cooler and oil pressure. This is a known problem for the GT350s in front end accidents having the cars oil cooler knocked off and the owners not turning the engine off in time to save the motors. I bought a GT350 to build with this very issue.

For a street car this is likely an OK location but for a race car you would want all coolers located inside of the frame rail and behind the front crash structure to protect it from potential damage from cars rubbing during a race.

Dave
 

baevid

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Yeah that was one thing I was afraid of when I eyeballing mounting locations for everything. I'll try to find a spot behind the crash beam without blocking too much of the trans cooler along with the whipple heat exchanger and fans.
 

xXANCHORMONXx

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That’s why the GT4 has the coolers relocated.

The way I see it, it’s all part of the risk involved with what we do. You are just as likely to go off, bottom out on a burm or rock and crack the oil pan as well.

On the Ecoboost I did have the oil cooler mounted in front of the radiator but had heat soak and coolant issues. Sometimes there is only so much you can do without going full race car.
 

EFI

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@xXANCHORMONXx what's the oil routing like on the dual coolers? Do you have them in line or do you have split separate lines for each that then join back to the engine?
 

xXANCHORMONXx

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@xXANCHORMONXx what's the oil routing like on the dual coolers? Do you have them in line or do you have split separate lines for each that then join back to the engine?
They are in series, so entering passenger side with a piece going across the bumper beam back into the driver cooler and back into the sandwich plate.

I wouldn’t split them as there would be too many lines to worry about.

You’d also have to have each line the exact same length so that oil flows through both coolers equally. This would mean having a few feet of extra slack coiled up.
 

lil'Zeus

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So to add to my cooling (or what I hope will help) I have been working on a brake cooling set up. I used the lower cervinis grill to match the upper. This opens up the lower grill a bit more than stock to help expose my coolers for more air. On the outside portion of the openings is the placement of my duct inlets. I had a buddy design/build a 3d printed inlet for this areas. Originally I wanted the entire scupper used to direct air but I don’t think his printer could print that big of a piece. He used half the area. Then I built block off plates to cover the remainder of the opening so I wouldn’t put air into the fender well areas on either side.

No one makes a backing plate yet for the magnaride spindle so I decided to just build my own. It’s a crude rough draft but I’ll be testing everything this week in 98-100 degree temps.

I’m open to input and welcome it for future changes etc.
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Flyhalf

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Hey.
I'm mainly tracking my 10speed 18.
I 've been the first installing coolers and other thing to keep her cool.
It is hard.
Especially if your pace is becoming faster.

So first thing. Oil cooler. I went with mishimoto. And now i have no thermostat.
If you have a 10speed you will need a bigger cooler than OEM ( i had to swpa the trammy after 7k miles cause overheating and seared the clutches. )
Brake ducts home made (buying inlet on amazon and classic orange silicone hoses. With back plate of @specfab ,sal molinare.
Diff cooler going up this week but auto with pp1mhas less heat issue than manual.
Also a bihher RADIATOR WILL HO IN this week.
Unfortunately the 2 big coolers in the front are now overheating the coolant and the head temp.
I also have hood vents however i didn't see amy dropped.
Hope this help
Alex
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lil'Zeus

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I was thinking of originally running a therm controlled fan pack in addition to the factory tranny cooler and mounting it remotely also. I didn't do it that way but still feel it will work. You will just not want the fan in the way of any air movement to the other cooling system in my opinon. My rear full tilt boogie diff cooler works so well I would maybe look at a larger set up like what they sell and probably mount it in the back by the rear diff cooler pack if I was going that route.
 

JohnD

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Hey.
I'm mainly tracking my 10speed 18.
I 've been the first installing coolers and other thing to keep her cool.
It is hard.
Especially if your pace is becoming faster.

So first thing. Oil cooler. I went with mishimoto. And now i have no thermostat.
If you have a 10speed you will need a bigger cooler than OEM ( i had to swpa the trammy after 7k miles cause overheating and seared the clutches. )
Brake ducts home made (buying inlet on amazon and classic orange silicone hoses. With back plate of @specfab ,sal molinare.
Diff cooler going up this week but auto with pp1mhas less heat issue than manual.
Also a bihher RADIATOR WILL HO IN this week.
Unfortunately the 2 big coolers in the front are now overheating the coolant and the head temp.
I also have hood vents however i didn't see amy dropped.
Hope this help
Alex
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20190516_151619.jpg
20190519_090948.jpg
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IMG_20190519_141639_638.jpg
View attachment 381580
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Your center hood vent is a long way back, did they tell you to mount it that far back? The Race Louvers one has to be installed 2" behind the back of the rad for maximum air extraction. Having it as far back as yours is allows hot air to get further into the engine room. You want the air exiting the rad to immediately go up and out. My peak temp on the longest straight dropped from 247 to 218 by installing it where they said it had to be.
 

Norm Peterson

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You want to locate extraction vents in a region of low pressure (outside the hood) so that the hot air will actually escape. I have no idea what the S550's aerodynamic profile looks like, but most hood extraction vents that work are located closer to the front of the hood.

High (outside) pressure regions have been used to help air intake to the engine (cowl induction schemes and reverse-facing hood scoops). Exactly wrong for trying to dump heat, though.


Norm
 

Flyhalf

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Your center hood vent is a long way back, did they tell you to mount it that far back? The Race Louvers one has to be installed 2" behind the back of the rad for maximum air extraction. Having it as far back as yours is allows hot air to get further into the engine room. You want the air exiting the rad to immediately go up and out. My peak temp on the longest straight dropped from 247 to 218 by installing it where they said it had to be.
The center hood is just behind the radiator. The first fin is over the water reservoir cup.
Main issue was the 2 big coolers completely stopping the flow.
Plus 100f out.
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shogun32

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You want to locate extraction vents in a region of low pressure (outside the hood) so that the hot air will actually escape.
I don't understand how anybody who designs a hood doesn't get this right. I understand not wanting waster constantly cascading off the windshield and down the front of the firewall. But what's so hard about a few molded 10mm nipples for attaching some dangling rubber tubing off a "tray" like mold under the wiper area? Then you could run a nice 1/2" gap between the back edge of the hood and the aformentioned "tray" for air to be drawn off. What idiot thought sealing the top of an engine bay was a useful goal?
 

Flyhalf

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You want to locate extraction vents in a region of low pressure (outside the hood) so that the hot air will actually escape. I have no idea what the S550's aerodynamic profile looks like, but most hood extraction vents that work are located closer to the front of the hood.

High (outside) pressure regions have been used to help air intake to the engine (cowl induction schemes and reverse-facing hood scoops). Exactly wrong for trying to dump heat, though.


Norm
Apperently the fins of trackspec dont need any "wall in the front because they already act like a pressure reducer (they are longer then others) although i was thinking to create a "firewall in the front of the vent to increase the extraction.
I saw the main benefit from a aero point of view. Car is glue in the front at high speed turn .

Go around 2:10. i was havimg some fun with @LAPTIMZ at sonoma . you can see where the vents make a difference more than the heat extraction.
Alex
 

 
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