The Big Fat Track Car Cooling Thread

[Brent Dalton]

That's how you tell if it's functional or not with the string.

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[jhols]

It does not increase cooling capacity, but keeping the coolant at a lower temperature does start you at a lower point and can increase the time you have on track before the temperature gets dangerous. After running Road Atlanta for 3 days this weekend and changing to a 170 thermostat, 100% water w/ water wetter, and fans coming on early... I'm comfortable with the stock pp system. I drove all night last night back here to Kansas and went straight into work so I have not had much time to put anything together, but the bottom line is my coolant temps were under control, which in turn helped somewhat with the oil temps. I'll be at Hallett next weekend and will see if I have the same results. Also of note, there was a 20 degree deltaT between engine coolant temp and cylinder head coolant temp.

Good luck with the Hallett heat though ;)

 

[BTM]

I bought the Scott Drake vents... hoping they will give some relief? Cut away some extra metal hoping it may improve flow? I need some smoke and wind like the video to see if it worked...LOL

Yes!! This is exactly what I had in my head!

Thanks [MENTION=14941]apex15stangPP[/MENTION], please do keep it posted on how it works.

 

[GT_Roadcourse_Newb]

I'll be testing out the RTR high flow front grill (upper & lower) along with Roush hood vents.

 

[EcoBlue68]

Brent I think there is a bit of an interpretation to the test you are suggesting.

String tests are a great idea and they do show airflow vectors. However in the video you provided the string is located below the attached flow over the hood. With the curvature and air speed above the hood vs below the hood you can easily surmise that via the Bernoulli affect there will be a lower pressure area above the hood. The could cause the string to raise as shown.

Im not saying that the vents in the video you provided don't function properly. Im just saying that that test may not be showing whats really going on.

However scavenging air from the underside of the hood via a lower pressure area on the top of the hood can still work effectively. The question is does it expell as much air as is entering the grill? For cooling purposes most likely, for optimal pressure gradients and downforce probably not.

 

[Brent Dalton]

All good, technical aero information. However, we aren't really talking aero. He is simply trying to see if he can get a little more heat out of the engine bay through vents. If air flow is pushing through (seen via string test), I think it is reasonable to assume it works. Enough to make a difference? We will have to wait and see what Jeremiah and John say.

 

[Plimmer]

Installed my Mishimoto radiator yesterday. Good quality piece and at 2 inches thick it is double the size of my old base model radiator.

Have a SCCA track night on Wednesday and will report back on temps. During a little around town driving in the 95 degree TX heat it never went over 200deg with my stock thermostat installed, so It seems I'm on the right track here.

Highly recommend this to anyone considering a radiator upgrade.

 

[GT_Roadcourse_Newb]

Installed my Mishimoto radiator yesterday. Good quality piece and at 2 inches thick it is double the size of my old base model radiator.

Have a SCCA track night on Wednesday and will report back on temps. During a little around town driving in the 95 degree TX heat it never went over 200deg with my stock thermostat installed, so It seems I'm on the right track here.

Highly recommend this to anyone considering a radiator upgrade.

Any word on weight difference? tia..

 

[Impulsed7]

gonna contain more fluid, so definitely weighs more. I'll take that trade anyday.

 

[GT_Roadcourse_Newb]

gonna contain more fluid, so definitely weighs more. I'll take that trade anyday.

good point. I'm not adverse to good weight.

 

[apex15stangPP]

I'm not a big fan of its looks, but the EB grill is really open!! I may nab one if I can find cheap, test it out.

 

[Plimmer]

Any word on weight difference? tia..

Its a little heavier but really not much, wouldn't even worry about it. I didn't weight it because when I held the stocker in one hand and the Mishi in the other I could tell that the difference wasn't worth measuring.


Also it performed great at my track day. Temp's were in the low 210's and I still have a stock thermostat. Ambient was 95 to 98 degrees.....hot :cheers:

 

[GT_Roadcourse_Newb]

Its a little heavier but really not much, wouldn't even worry about it. I didn't weight it because when I held the stocker in one hand and the Mishi in the other I could tell that the difference wasn't worth measuring.


Also it performed great at my track day. Temp's were in the low 210's and I still have a stock thermostat. Ambient was 95 to 98 degrees.....hot :cheers:

Outstanding! I like enduro mods as well as speed mods.

Looking forward to going with the Radiator AND the Oil cooler

The words 'group buy' come to mind!? ( [MENTION=9961]Mishimoto[/MENTION] !!)

 

[BTM]

I bought the Scott Drake vents... hoping they will give some relief? Cut away some extra metal hoping it may improve flow? I need some smoke and wind like the video to see if it worked...LOL

Hey [MENTION=14941]apex15stangPP[/MENTION], have you had a chance to see how well the vents work? Hood lift at speed?

 

[apex15stangPP]

Helped with hood lift for sure. Just got the car back lastnight from the body shop. I plan on putting a go pro on the hood and using string to see the air flow

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