Keeping temps down on track?

Averying · 07-22-2023, 02:44 PM

Who has ducted oil coolers and radiator with a sport bumper? I have a 34 row with a bumper cutout, and some slots in my fender liner, but still saw 260° oil temps at my first track day, along with 230°+ coolant temps. I figure ducting and/or a oil cooler can is my next step to keep temps in check for the future. Also, are people running stock fender liners or getting rid of them to get more air flow?

Looking for some inspiration on how to make some ducting and if anyone has general advice, it’d be much appreciated!

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Rusty · 07-22-2023, 04:09 PM

Vent your hood with Trackspec vents.

Averying · 07-23-2023, 11:20 AM

Quote:

Originally Posted by Rusty

Vent your hood with Trackspec vents.

Do you drive your car in the rain with the trackspec vents? How’s that work?

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SeeThruHead · 07-23-2023, 11:38 AM

I think vented hood or not the engine bay gets wet in heavy rain.
Dealerships often pressure wash engine bays with the engine running apparently, to save time.
I pressure wash my engine often, and turn on the car to dry it out.
Maybe not a great idea if you have exposed filters on cold air intakes...Not sure about that.

That being said it would probably be fairly easy to fab some removable rain guards that attach underneath the hood if you're really worried about it.

Rusty · 07-23-2023, 01:15 PM

Quote:

Originally Posted by Averying

Do you drive your car in the rain with the trackspec vents? How’s that work?

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Yep, I don't use my rain shields anymore. Drove 10 hrs in the rain coming home from ZDayZ one year. No issues.

Averying · 07-23-2023, 03:25 PM

Quote:

Originally Posted by SeeThruHead

I think vented hood or not the engine bay gets wet in heavy rain.
Dealerships often pressure wash engine bays with the engine running apparently, to save time.
I pressure wash my engine often, and turn on the car to dry it out.
Maybe not a great idea if you have exposed filters on cold air intakes...Not sure about that.

That being said it would probably be fairly easy to fab some removable rain guards that attach underneath the hood if you're really worried about it.

Quote:

Originally Posted by Rusty

Yep, I don't use my rain shields anymore. Drove 10 hrs in the rain coming home from ZDayZ one year. No issues.

Good points… the water issue (sounds like not really an issue like I thought) and fear of cutting up my OEM hood were steering me away from hood vents. But I may reconsider now!

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Rusty · 07-23-2023, 05:45 PM

Quote:

Originally Posted by Averying

Good points… the water issue (sounds like not really an issue like I thought) and fear of cutting up my OEM hood were steering me away from hood vents. But I may reconsider now!

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I've used a high pressure washer on my engine with no issues.

danegrey · 07-23-2023, 07:15 PM

Also, for the track, I run Engine Ice for coolant, and have the trackspec vents...
Only problem I had last time on the track, I found out I had a coolant leak...
car went into limp mode....

Till that I had no problem with temps going to the critical stage

What oil are you running? I run - Mobil 1 FS European Car Formula Full Synthetic Motor Oil 0W-40

Rusty may have some suggestions too...

Averying · 07-23-2023, 07:25 PM

Quote:

Originally Posted by danegrey

Also, for the track, I run Engine Ice for coolant, and have the trackspec vents...
Only problem I had last time on the track, I found out I had a coolant leak...
car went into limp mode....

Till that I had no problem with temps going to the critical stage

What oil are you running? I run - Mobil 1 FS European Car Formula Full Synthetic Motor Oil 0W-40

Rusty may have some suggestions too...

I also switched to M1 0W-40 right before the track day.

Seems like a center-mounted oil cooler (in front of radiator) may be a better spot for the oil cooler than side-mounted like I have. I think without proper ducting, and the fact that the fender liner prevents proper flow, side-mounted seems to be tougher to make effective

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Rusty · 07-23-2023, 10:31 PM

Quote:

Originally Posted by danegrey

Also, for the track, I run Engine Ice for coolant, and have the trackspec vents...
Only problem I had last time on the track, I found out I had a coolant leak...
car went into limp mode....

Till that I had no problem with temps going to the critical stage

What oil are you running? I run - Mobil 1 FS European Car Formula Full Synthetic Motor Oil 0W-40

Rusty may have some suggestions too...

Same stuff.

My 34 row is mounted just to the right, in front of the radiator. Also made duct work behind the bumper to direct the air flow to the radiator/oil cooler/power steering cooler. You don't want any air bleeding off around the sides. A splitter helps with air flow too.

2011 Nismo#91 · 07-24-2023, 05:34 AM

Hood vents will drop those temps by about 10 deg. or so. The main issue is having the intercooler there. It's slows down and heats up the air a lot. First mount the oil cooler to the side as mentioned. Second add more ductwork all around the intercooler/radiator not let the air flow around any side. Third, in addition to the track spec vents add two more vents above the stock bumper opening on the sides of the badge; I'd say about half the radiator is exposed to the stock bumper opening, it needs more. Last add a second oil cooler if needed and a front splitter.

Averying · 07-24-2023, 08:31 AM

Quote:

Originally Posted by 2011 Nismo#91

Hood vents will drop those temps by about 10 deg. or so. The main issue is having the intercooler there. It's slows down and heats up the air a lot. First mount the oil cooler to the side as mentioned. Second add more ductwork all around the intercooler/radiator not let the air flow around any side. Third, in addition to the track spec vents add two more vents above the stock bumper opening on the sides of the badge; I'd say about half the radiator is exposed to the stock bumper opening, it needs more. Last add a second oil cooler if needed and a front splitter.

This is great. I will start with ducting the coolers and positioning them better (oil cooler and Rotrex cooler moved further off to the side to get clean air). Cutting the bumper&hood will follow if ducting doesn’t help

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Z is 4 ZEBRA! · 07-24-2023, 02:16 PM

Here is what I did.

- Upgrade oil cooler core to 40 row. It is not necessarily a direct fit as some trimming and creative mounting had to be done.
- Trackspec hood vents
- Trim bumper opening to allow more airflow + aftermarket bash bar
- Mild ducting to force air to go through the radiator and oil cooler
- Water wetter

Averying · 07-24-2023, 02:23 PM

Quote:

Originally Posted by Z is 4 ZEBRA!

Here is what I did.

- Upgrade oil cooler core to 40 row. It is not necessarily a direct fit as some trimming and creative mounting had to be done.
- Trackspec hood vents
- Trim bumper opening to allow more airflow + aftermarket bash bar
- Mild ducting to force air to go through the radiator and oil cooler
- Water wetter

Your picture is broken… doesn’t show up! Can you reattach it or post an Imgur link, etc

Z is 4 ZEBRA! · 07-24-2023, 05:36 PM

Quote:

Originally Posted by Averying

Your picture is broken… doesn’t show up! Can you reattach it or post an Imgur link, etc

oil and water Temp, WOW

Try this

07-22-2023, 02:44 PM	#1 (permalink)
Averying Enthusiast Member Join Date: May 2018 Location: Rhode Island Posts: 481 Drives: '09 370Z, '03 G35 Rep Power: 14419	Keeping temps down on track? Who has ducted oil coolers and radiator with a sport bumper? I have a 34 row with a bumper cutout, and some slots in my fender liner, but still saw 260° oil temps at my first track day, along with 230°+ coolant temps. I figure ducting and/or a oil cooler can is my next step to keep temps in check for the future. Also, are people running stock fender liners or getting rid of them to get more air flow? Looking for some inspiration on how to make some ducting and if anyone has general advice, it’d be much appreciated! Sent from my iPhone using Tapatalk Rjk370z likes this. __________________ 2009 Sport Touring \| Platinum Graphite \| GTM Stage 1 Supercharger \| BC BR Coilovers \| Hotchkis Swaybar \| Z1 FUCAs \| AME TM-02 Wheels \| Z1 2-piece Front Rotors \| Z1 Clutch & Flywheel \| Invidia Gemini Catback \| GTM Resonated Test Pipes

07-22-2023, 04:09 PM	#2 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 69 Posts: 35,344 Drives: 2011 Nismo GM 6M Rep Power: 2684438	Vent your hood with Trackspec vents. danegrey and Optimiser like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

07-23-2023, 11:38 AM	#4 (permalink)
SeeThruHead Track Member Join Date: Jun 2020 Location: Toronto Posts: 716 Drives: Red '18 Sport Manual Rep Power: 23498	I think vented hood or not the engine bay gets wet in heavy rain. Dealerships often pressure wash engine bays with the engine running apparently, to save time. I pressure wash my engine often, and turn on the car to dry it out. Maybe not a great idea if you have exposed filters on cold air intakes...Not sure about that. That being said it would probably be fairly easy to fab some removable rain guards that attach underneath the hood if you're really worried about it. Averying likes this. __________________ My Build thread STH Build Plan Thread Images too big fix here Last edited by SeeThruHead; 07-23-2023 at 11:40 AM.

07-23-2023, 07:15 PM	#8 (permalink)
danegrey A True Z Fanatic Join Date: Oct 2011 Location: Knoxville Age: 71 Posts: 3,195 Drives: 12 370Z BK Cherry M6 Rep Power: 649540	Also, for the track, I run Engine Ice for coolant, and have the trackspec vents... Only problem I had last time on the track, I found out I had a coolant leak... car went into limp mode.... Till that I had no problem with temps going to the critical stage What oil are you running? I run - Mobil 1 FS European Car Formula Full Synthetic Motor Oil 0W-40 Rusty may have some suggestions too... Rusty likes this. __________________ Lots of Changes the Z needs to be driven and driven hard for the car lives for it Last edited by danegrey; 07-23-2023 at 07:18 PM.

07-24-2023, 05:34 AM	#11 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,408 Drives: slowly Rep Power: 40570	Hood vents will drop those temps by about 10 deg. or so. The main issue is having the intercooler there. It's slows down and heats up the air a lot. First mount the oil cooler to the side as mentioned. Second add more ductwork all around the intercooler/radiator not let the air flow around any side. Third, in addition to the track spec vents add two more vents above the stock bumper opening on the sides of the badge; I'd say about half the radiator is exposed to the stock bumper opening, it needs more. Last add a second oil cooler if needed and a front splitter. danegrey, Rusty and Averying like this. __________________ GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs

07-24-2023, 02:16 PM	#13 (permalink)
Z is 4 ZEBRA! Base Member Join Date: Jun 2013 Location: SLC Posts: 71 Drives: 40th Nissan 370z Rep Power: 4252	Here is what I did. - Upgrade oil cooler core to 40 row. It is not necessarily a direct fit as some trimming and creative mounting had to be done. - Trackspec hood vents - Trim bumper opening to allow more airflow + aftermarket bash bar - Mild ducting to force air to go through the radiator and oil cooler - Water wetter Rjk370z likes this.

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