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How critical is PS cooler on a track car?

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Old 08-27-2015, 08:23 PM
  #31  
mark kibort
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Originally Posted by atb
As long as we have a clear understanding that leaving the stock piping in place only affects the torque curve and not the peak horsepower, therefore overall track performance is not affected. :-)
as long as you dont change to a 3:09 ring and pinion.... yes, that is true.
Old 08-28-2015, 04:23 AM
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atb
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Well,she's in.

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I need to fab up a mount for the reservoir, and had to drill new mounting holes since the ones on the OB didn't line up.

Now it turns out that I get to pull all the accessories off again because I need to loosen the Porkensioner mount so I can bolt on the Lizard vacuum pump mount. Good times.
Old 08-28-2015, 11:30 AM
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James Bailey
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Originally Posted by mark kibort
Jim, sorry about that

however, i cant imagine that this "cooler" loop line has much of an effect in cooling the fluid, but thats a guess on my part.
For years 911s used a simple trombone engine oil cooler up in the right front fender and works just fine.... until turbos needed a radiator.
oh and the Cayman fire issue is well documented. ...the plastic reservoir and fittings melt.....dumping fluid on the exhaust. Watched one burn one day.....but there is no problem with heat
Where do you think all that energy being used to pump fluid ends up ?? Best answer is turns to heat.
Old 08-28-2015, 11:52 AM
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John Veninger
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I installed a finned cooler on my PS system and left the metal can reservoir. Never had any issue with the rack or pump. At least one thing I didn't have to worry about......
Old 08-28-2015, 01:22 PM
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mark kibort
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Originally Posted by James Bailey
For years 911s used a simple trombone engine oil cooler up in the right front fender and works just fine.... until turbos needed a radiator.
oh and the Cayman fire issue is well documented. ...the plastic reservoir and fittings melt.....dumping fluid on the exhaust. Watched one burn one day.....but there is no problem with heat
Where do you think all that energy being used to pump fluid ends up ?? Best answer is turns to heat.
IM not doubting the fires.. just doubting the cause. you shouldnt know the difference. leaking fluid on a exhaust manifold is not a power steering fluild needs to be cooled issue, its a power steering reservoir needs to be made of a better material, OR needs to be place where it cant get that hot from external sourses, issue.

Now, "where does the energy......." go? ahhhh, well most of it goes up in mechanical energy , which is not a lot by the way, and the efficiency losses in the pump will go up in noise and in heat. certainly not a lot, as seen by the temps ive seen in the reservoir. its not hotter than water or oil in their systems by any stretch. and certainly not hot enough to melt plastic. however, if the reservoir is placed in a cramped engine bay like a 911, then yes , plastic will melt, oil will flow and fires will start when the oil hits the exhaust.
there is an old saying ..... "coorelation doesnt imply causation".

why dont you do this for us all jim... why not tell us the temperature that you have ever seen or heard of for power steering flud... .Then, give us the melting points of the plastic used in the reservoir.

Ill give you a hint...... PS fluid doesn't melt plastic.... people do by designing systems putting them too close to hot engine parts!

here is a link if you dont want to guess, as you often do here: (by the way, 260F comes to mind for some but usually higher and the PS fluid aint that hot!)
http://iwww.plasticsportal.com/produ...+A3EG7+BK00564



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