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09-24-2020, 12:58 PM | #1 |
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Oil Getting Hot on Track
Hey all,
I took my car to its first track day at BIR earlier this week and had issues keeping my oil temps in check. I already have a fbm oil cooler and radiator (full mods list here: https://www.ft86club.com/forums/showthread.php?t=140753) I was wondering what the next steps are that I could take for better oil cooling? Ambient temp was about 80F, oil temps would rise up to about 250-260F on hot laps before I would slow down and let things cool off. I could only do about 2 hot laps before things got too hot. I also had installed an oil pressure gauge and was seeing like 30psi at redline when hot. When the oil cooled down back to around 210F I would see like 65psi at redline. I was using Castrol Edge 5w-40. Coolant temps remained in check the entire time. The cooler sits right behind the passenger fog light and just doesnt see much air movement. The intercooler piping runs like right in front of it too so ducting from the main vent doesnt seem like a possible option. So the options I'm considering are: removing the fog light, wiring a fan to the cooler, getting a hood vent (thinking driveway labs), or going with the JR dual rad/oil cooler so it picks up air from the front. What would you suggest? Not my car but this is where the cooler sits
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FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17 |
09-24-2020, 01:51 PM | #2 |
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FWIW my oil temp goes up to ~272F indicated on the factory gauge and holds there, every track session, whatever the ambient temp... Stock engine, no cooler.
If 30psi hot pressure at rpm has you worried, you might go to an even thicker oil for track use. Was gonna mention KillerB pickup tube but you already have that! |
09-24-2020, 02:01 PM | #3 |
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It may seem ghetto, but have you contemplated either swiss-cheesing your fog light bezel, dremeling the plastic out to give airflow, or finding bezels that have airflow pockets? I think aside changing you oil to only mildly mitigate your temps, you need to open air up into that little space.
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09-24-2020, 02:02 PM | #4 | |
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__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17 |
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09-24-2020, 02:05 PM | #5 | |
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I didnt have any tools with so I couldnt take the fog light itself out, seems like that would open up a nice hole to the cooler. But I'd rater just remove the foglight so I dont have cut any of the factory pieces
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2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17 |
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09-24-2020, 02:09 PM | #6 |
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Strange, I am NA but I have seen 240-260F with oil cooler on a hot day, my oil pressure would still be 45-50psi at redline on 0-20.
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09-24-2020, 02:11 PM | #7 |
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You could cut out the flat parts of the fog light bezel to make it less noticeable.
Edit: just saw your note about not wanting to cut. removing the fog light is the next best thing. 2nd Edit: Is there enough room with the IC to make some sort of scoop that directs air from the grill to the side?
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09-24-2020, 02:34 PM | #8 | |
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I will try removing my foglight and see if that helps get more air to the cooler. Is a hood vent necessary though? I know these engine bays are pretty sealed up and my mindset is what good does more air in do if it has no where to go
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2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17 |
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09-24-2020, 02:36 PM | #9 | |
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I had 0w-20 in before the track and at normal operating temp (190-200F) I would only see like 50psi at redline. Hence why I upped to 5w-40
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2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17 |
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09-24-2020, 02:41 PM | #10 | |
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__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17 |
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The Following User Says Thank You to MotoX16 For This Useful Post: | BigTuna (09-24-2020) |
09-24-2020, 02:41 PM | #11 |
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OEM pressure sender location on the front of the timing cover. I think I am getting some cavitation at that area so I notice odd fluctuations at high RPM, but I believe it is fairly accurate.
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09-24-2020, 02:52 PM | #12 | |
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Quote:
As I think about it, if cavitation at high rpm is the issue, then going to a thicker oil might not help, might make it worse... Might stick with 5w40 or go 10w40. Or go 30 weight! FWIW I run 5w30 synth at 272F. Dunno what my oil pressure is! |
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The Following User Says Thank You to ZDan For This Useful Post: | MotoX16 (09-24-2020) |
09-24-2020, 03:02 PM | #13 | |
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__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17 |
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09-24-2020, 03:17 PM | #14 | |
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Quote:
My headers and downpipe are ceramic coated. My idea with the hood vent is it may not pull air through the oil cooler itself, but sitting right above the turbo I feel it would decrease the overall temp under the hood. Therefore lowering the oil temp
__________________
2017 Subaru BRZ PP
FBM Turbo Kit: GTX3076R - HRI FlexFuel Tune - 3" Turboback Exhaust - ID1000cc Injectors - Walbro 485 Fuel Pump - FBM Oil Pan - FBM Oil Cooler - Killer B Oil Pickup - FBM Catch Can - FBM Radiator w/Fan Shroud - Clutch Masters FX400 - Verus Clutch Fork/Pivot - IRP Shifter - Cusco Engine/Trans Mounts - RCE Yellow Springs - PS4S 245/40/17 |
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