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04-10-2013, 11:53 PM | #1 |
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Coolant Temps Running High
I have asked and everyone seems to say "have not seen an issue".
But, so far in the testing I have been doing the coolant temps on this car run high, don't know if it is a subaru thing or just my car. But the dash gauge is not showing any movement yet when hooked into OBD2 I am seeing idle temps as high as 217F autox and track also showing peaks of 220. I first noticed this on baseline dyno testing where the engine was constantly pulling timing because of coolant temp. Can some of you autox and track guys run an OBD2 check on yours? Keep in mind the temp gauge in the car does not move from middle whether its 190 to 220.
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04-11-2013, 12:01 AM | #2 |
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Did a track day at Laguna Seca and my peak logged ECT was 196F. Most of the time the car was in the 180s. My car is totally stock.
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04-11-2013, 08:49 AM | #3 |
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I haven't tracked my car but I haven't observed anything over 192F.
Is there anything blocking airflow? How old is the coolant/still OEM?
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04-11-2013, 09:30 AM | #4 |
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I observed just that while stuck in traffic this morning...
Water temp would go up until approx. 212F, then start falling quickly to the "normal" 194F. It then starts to climb up again and the cycle continues. Is it some sort of cooling issue or just poor regulation? |
04-11-2013, 10:44 AM | #5 |
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At the track this past weekend I never saw over 201 deg (70 deg and sunny air temps). My top speed on the main straight was very consistent between laps.
My engine is 100% stock, I was running 0W30 German Castrol, 93 Octane pump gas (probably 10% ethanol). |
04-11-2013, 10:47 AM | #6 |
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its a stock car no issues with blocked radiator. i need to check service manual and see when radiator fans are triggered. issue being, if its already higher, when I go and throw an intercooler and oil cooler its going to get worse.
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04-11-2013, 10:54 AM | #7 |
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It is already established that a thicker radiator is absolutely necessary when you meet these two criteria:
A. You have FI B. You track your car You can check out the Tuned episode on YouTube where they track test team VCMC's turbo frs. Full blown offers a new radiator as an addon. Robispec has a radiator + oil cooler all in one package. |
04-11-2013, 11:00 AM | #8 | |
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where has this been established, sorry I must have missed the thread I have FI, I track my car, I am on an OE rad, will share log data as I collect more I'm on Vortech, so that may be different than TC or other SCs All I have is a perrin oil cooler and small 5" fan to track in triple digit heat. You may be right , and data may prove otherwise, but I have yet to get there. What did I miss? gem |
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04-11-2013, 11:40 AM | #9 | |
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04-11-2013, 11:43 AM | #10 | |
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04-11-2013, 11:51 AM | #11 | |
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a car not running hot wont benefit a bigger rad, was all I was getting at its easy to say FI=get a bigger rad, but where is the coolant data saying so? I have yet to generate my own, so thats why I asked So I will run some logs and keep an eye on water-I think I am asking here-not making a fact,just not sure on the verdict here myself on 'needing a radiator' I am sure, I WANT one, however!!!! |
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04-11-2013, 12:04 PM | #12 | |
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This is, assuming, all other conditions are equal (cars, distance/time driven, etc.). What I'm getting at is that a faster driver will overheat a car that generates less heat at peak output, while a less experienced driver may not have any heat issues in a car that actually generates more heat at peak output, because they TOTAL heat output generated by the less experienced driver a smaller amount. As a baseline, our car averages around 3.7-4.9 MPG on track, depending on the track, with a 100% stock drivetrain. |
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04-11-2013, 12:05 PM | #13 |
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O'rlly? Do you mean both criteria need to be met, or just one? I would agree if BOTH are met. The jury is still out out if it is only one.
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04-11-2013, 12:09 PM | #14 | |
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