[pmcrespo]

Is it an actual "coolant" or an additive? I think I may not be able to use it due to NASA regs... <img src="/forum/images/smilies/968/mad.gif" class="smilie" alt="" />

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[Cloud9...68]

I'm pretty sure it's an actual coolant. Does NASA specify the type of coolant you can use?

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[RS Barn]

It's an actual pre-mixed coolant. Bio degradeable too! It would be as legal as store bought anti freeze.

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[banditsc]

No coolant for NASA, to slick on the track, only water and water wetter.

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[Cloud9...68]

"No coolant for NASA, to slick on the track, only water and water wetter."





Hmmm... I don't doubt you, but I was looking through the NASA rule book the other day, and didn't see anything about this. Could you point out where they say this? Thanks.

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[pmcrespo]

[size="3"]NASA CCR



15.18



[/size][size="3"][size="3"]Engine Coolant [/size][/size]



[size="3"] [/size][size="3"] [/size][size="3"][size="3"]Ethylene Glycol-based antifreeze and other additives that may cause a slippery condition if spilled on track are prohibited. Other water additives such as Redline Water Wetter may be used.



As applicable to racing and Time Trial mainly.



The Firehawk is not doing any NASA Racing these days and other clubs have different rules. Nonetheless, for anyone doing anything else and in need of a bit cooler temps, the stuff Pete points out sounds like a must have!





[/size][/size]

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[Cloud9...68]

Thanks; it wasn't in the copy of the rules I was looking at, but the document you refer to is much more detailed.



So, how are you able to keep your engine cool in a race, given the propensity for these cars to run hot, even on a warm day on the street? I know, I should do a search...

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[RS Barn]

Engine Ice is Envoirmentally safe Propylen Glycole. That doesn't mean it isn't slippery on race track. Water and water wetter is too...

I will talk to manufactures about uses in other sanctioned race series.

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[Lim Yong]

I googled Engine Ice.......conflicting information about the effectiveness of this product....Any good sources??

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[flash]

it all depends on the use - what it says even right on their site, is that, in a street car, with a computer controlled cooling system, you won't see much of a change if any, as the system will always try to maintain the fixed temperature - in a race car, where you exceed the capacity of the system, the benefits can come into play



it will be interesting to see if they allow it in club racing - it's so hard to get stuff off of the track, and they are so resistant to change, i just don't know how that will play out



could be cool though (obvious pun intended)

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[Cloud9...68]

Well, at least it could still be used at DEs, and at my local driving academy. After reading a bunch of reviews, I must admit to a bit of skepticism, though. I find it odd that some people say it measurably reduced their coolant temperature, and others saw no effect. Wondering how many of the positive reviews are placebo. One of the cornerstones of the scientific method is repeatability, so I'm not yet convinced. But of course, as more people try it and report positive results, the stronger the case. At least it only costs a few bucks more than standard ethylene glycol, and doesn't sound like it could do any harm.

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[flash]

again, it's all relative - temps go out of range on the track, because of the system capacity - that's when you would see lower coolant temps



if a car's system was not efficient enough, you could see the same sort of effect on the street



our system is actually very efficient, when working properly - so, you probably won't see any change on the street, but on the track, where your temps soar due to the limitations of the system, it could easily lower them

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[tamathumper]

The thermostat opens when it opens, and temps come down until it closes...

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[Lim Yong]

Given the age of our cars. How can we reduce temps during regular driving? 1) increase coolant capacity 2) increase airiflow 3) change parameters (thermostat etc) 4) reduce air pressure behind radiator  I am currently using water wetter. Will engine ice be worth while? thanks

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[flash]

tama - yes, thermostats do what they do, right up to the point where there is more heat being introduced than the system can dissipate - that's where things like better coolants come into play



probably not worth it during regular driving, however, being a more efficient coolant, you would at least have a leg up in knowing that your system was working as well as it could



i'll probably give it a go

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[tamathumper]

Not me, I'll stick with the approved coolants, as finding out some new uber-fluid eats all the seals out of the coolant passages would be $$$... Under normal operating conditions (which is all I experience), the only thing an uber-fluid would do is make the temperature drop a little faster between thermostat-open and thermostat-close, and add risk.

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[pmcrespo]

[quote name='Cloud9...68' timestamp='1311991672' post='113450']

So, how are you able to keep your engine cool in a race, given the propensity for these cars to run hot, even on a warm day on the street? I know, I should do a search...

[/quote]



To be honest, outside of maintenance and tightening something here and there, Pete and Max are the only ones that have touched that engine compartment, and I dont know how they have achieved it, but the motor runs inpecably consistent in temps and well below most other 968 engines I have seen. My next step on this front is installing some hiflow louvers on the hod to cool the engine bay a bit more. Especially the intake side.

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[RS Barn]

Most 968's run hot on street when temps are 90F or above. Track temps are brutal to coolant and oil.

Any product that lowers them is welcomed by me.

Unless you have specific product knowledge and related problems please don't cast a spell on anything other than OE specified.

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[craigawoodman]

I second Pete's comment. Running my 968 on hot Queensland summer days on the track would see the engine temp light come on and you would have to short shift to get it to come down. We were running a second oil cooler, ducting to the radiator, etc. Interesting that with the SC and after market engine management computer, I don't see as many problems (but it has not been run in summer temps yet).



On the track, anything to reduce engine temps will also improve HP - so it has to be good. It comes down to how much thermal energy the coolant can carry and how efficiently it can drop this when passing through the radiator. Any coolant which improves this over water, will help your engine.



Most coolants are predominately water with additives to reduce corrosion, etc.

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[RS Barn]

Craig,

There is much science to new generation coolants. When engine temps climb, traditional coolants gets forced away from internal surfaces. New coolants let coolant stay attached to surfaces and draw heat away.

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