Overheating on track - looking for solution for 2-port engine

[razorlab]

He does not have manfiold upgrade, runs stock. Side and front cooling stack changed to different, duno the brand.

Well, would going to e30-e40 mix help? I heared going E-blend helps with temps visibly

Manifold upgrade should basically be a prerequisite for a track car. The front cooling stack exchanger barely does anything. The manifold will shed a ton of heat that is entering the head and block from the air charge. It's all an interconnected system that lives in a small little house called the engine bay. Everything adds up.

If a car hits 280F oil temp in one lap in 80F ambient, something is wrong. I'm going to assume it's running way too much boost for the stock turbo/system.

If you really care about heat management, upgrade the system. Here is my recommendation list:

- Intake manifold upgrade
- Additional heat shielding overall
- Ethanol if possible (overall benefits)
- 1000w M/E/ZTK cooling stack fan
- More water than coolant
- A *good* air to water oil cooler if needed (track/environment dependent)

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[Islindur]

Manifold upgrade should basically be a prerequisite for a track car. The front cooling stack exchanger barely does anything. The manifold will shed a ton of heat that is entering the head and block from the air charge. It's all an interconnected system that lives in a small little house called the engine bay. Everything adds up.

If a car hits 280F oil temp in one lap in 80F ambient, something is wrong. I'm going to assume it's running way too much boost for the stock turbo/system.

If you really care about heat management, upgrade the system. Here is my recommendation list:

- Intake manifold upgrade
- Additional heat shielding overall
- Ethanol if possible (overall benefits)
- 1000w M/E/ZTK cooling stack fan
- More water than coolant
- A *good* air to water oil cooler if needed (track/environment dependent)

I got all this done on mine except ethanol, still i can hit 280F oil in 2-3 laps. Turbo is pure800 size, but more coolant than water. Water target set to 87c in tune. Maybe should be lower?
Or try e30 mix

As for op, his case may be different than mine.

 

[razorlab]

I got all this done on mine except ethanol, still i can hit 280F oil in 2-3 laps. Turbo is pure800 size, but more coolant than water. Water target set to 87c in tune. Maybe should be lower?
Or try e30 mix

As for op, his case may be different than mine.

Okay, let's actually share data and actual clear mods. I'll start.

Track, track length, elevation: Pocono Megatrack, 3.51 miles, 1880ft
Top speed: 160mph
Number of laps: 4
Turbo: Pure800 (Non new-cast)
Peak boost at 5500rpm: 25psi
Peak boost at 6500rpm: 28.5psi
Cooling modifications: Hood vent, Wagner manifold, Do88 aux coolers, engine heat shielding around intake/dp.
Oil and weight: Motul 8100 X-cess Gen 2. 5w40.
Ethanol level: 40%
Ambient temp: 70F
Peak oil temp: 243F
Peak coolant temp: 223F
Peak charge temp: 370F
Peak IAT: 120F
Link to datalog


Track, track length, elevation: Lime Rock, 1.53 miles, 770ft
Top speed: 148mph
Number of laps: 9
Turbo: Pure800 (Non new-cast)
Peak boost at 5500rpm: 26psi
Peak boost at 6500rpm: 28psi
Cooling modifications: Hood vent, Wagner manifold, Do88 aux coolers, engine heat shielding around intake/dp.
Oil and weight: Motul 8100 X-cess Gen 2. 5w40.
Ethanol level: 39%
Ambient temp: 88F
Peak oil temp: 259F
Peak coolant temp: 237F
Peak charge temp: 390F
Peak IAT: 140F
Link to datalog

 

[Rizen]

I don't think putting the oil cooler in front of the main heat exchanger stack is really the best location for it.

 

[razorlab]

What a shock. Yet another thread asking for feedback/help but only sharing the bare minimum, not answering clarifying questions, and then wondering why it wasn't helpful.

People are fucking dumb.

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