Running too cool bad?
05-16-03, 11:49 AM
#1
Slave2TheFD
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Running too cool bad?
Just wondering if improving the cooling system too much is bad for the engine? I try and keep the water temps around 76-78C by turning the fans on with the A/C trick. Should I let it get hotter instead?
cooling mods: ribbed water jackets, Koyo, NPG+ at 0psi, throttle body bypass.
cooling mods: ribbed water jackets, Koyo, NPG+ at 0psi, throttle body bypass.
05-16-03, 12:25 PM
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Slave2TheFD
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Not that it doesn't get hotter, it will hit 90c if I run it hard to redline with full boost a few times on a hot day.
But if I'm cruising down the freeway at 80 on a cool day the temps drop into the low 70's even with the fans off.
But if I'm cruising down the freeway at 80 on a cool day the temps drop into the low 70's even with the fans off.
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05-16-03, 12:59 PM
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Slave2TheFD
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I still have my stock AST :-(
I should do the fan mod, it's on my list of stuff to do.
I have a turbo timer though, and if the temp is over 80 when I go to shut down I let the timer idle it for 3-5 minutes.
I should do the fan mod, it's on my list of stuff to do.
I have a turbo timer though, and if the temp is over 80 when I go to shut down I let the timer idle it for 3-5 minutes.
05-16-03, 01:51 PM
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You are keeping your car too cold. 78C = 172F. The double-throttle plates are barely open at that point. I would never get on the engine really hard at that low of a temp.
These cars run great in the 185-200 F range and IMO, that's where they should be.
These cars run great in the 185-200 F range and IMO, that's where they should be.
05-16-03, 02:18 PM
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Slave2TheFD
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I really like it, as long as you buy enough to always have some in the car in case you need to top it off. I firmly believe that it saved my engine when my AST exploded.
05-16-03, 03:31 PM
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Originally posted by Jedon
I removed my double throttle plates :-D
So what is 185-200 F in C?
That's what the PFC commander reads in.
I removed my double throttle plates :-D
So what is 185-200 F in C?
That's what the PFC commander reads in.
The stock fans don't even come on until 221F = 104 C. While I feel this is certainly too high, I think running at 172F (78C) is way too low for hard driving.
05-16-03, 07:26 PM
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Slave2TheFD
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yes, it can run hotter due to the fact that it has a much higher boiling point so won't create hot pockets like water will. Perhaps I should try and just run the car without turning on the fans like I usually do and see what the temps balance out to.
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