Speaking of cooling, is an oil cooler really necessary for DD higher power Ralliart's? I know EvoX have one stock...

 

Summer in california and I don't get anywhere near 195 C in daily driving...even in the hills and canyons. Seriously, unless you track it or have some serious modifications I would not worry about it. All it will do increase the cost of your tranny fluid change...which may cause you to do it less often...which will ultimately be worse for your tranny life then having that cooler on there.

 

You shouldn't, that's the point. The only time these SST overheat is drag/track racing.

 

you also have to remember that a quality cooler (like SSP's) comes with a full independent pump. it's great if you have a secondary cooler, but if you're not pumping the oil through it, it's not doing any good just sitting there (just heatsoaking). without a pump, I imagine you're just adding volume for the oil to travel before it circulates through the cooler again

I just got my SSP cooler installed this past weekend, and did a short writeup with a few pics on it in my build thread (to not derail this one)

I've heard mixed satisfaction about adding a fan - I think the OEM one just gets heatsoaked and/or the pump can't cycle the oil through the cooler fast enough to keep up with the heat generation.

at regional #4 (also have a writeup in my thread), I tried spraying it heavily for at least 5 minutes with water, but temps only dropped about 1-2 degrees. so either 5 whole freaking minutes wasn't enough to cool the cooler down, or it's just not being cycled through that cooler enough for it to do it's job (though it's probably both)

but on the street, SST temps are usually around 50 on a cold start and warms up to about 75 - driven hard maybe up to 85 or 90, but I can't imagine doing anything on the street to drive it higher than that (but hey, Houston's flat - no canyons lol )

 

haha! Yeah, there are a lot of bad roads here (thawing period is unpredictable and long here which creates a lot of pot holes). So I have my moments of pushing it but it's pretty few and far between.

I guess if I only plan on racing (drag/lapping) I should worry about a 2nd SST cooler (and pump) + oil cooler.

 

Keeps the budget down and I'll just make sure to change the SST filter/fluid more often.

 

Quality and 2nd pump are not synonymous for SST Coolers. While I appreciate that SSP says "a pump is need to move the fluid" I can list off a half dozen track tested and proven set-ups that run 2 inline coolers on the oem pump. Yes it's nice to have a secondary independent cooler system, but 2 inline does the job more than adequately. You can literally feel the fluid rushing in the lines, there is no lack of pumping force.
The point of a cooler on the crash beam is direct airflow to remove large quantities of heat from the fluid prior to re-entering the transmission; the opposite of heat soak. The point of the fan is for continued airflow when the car is stationary, in between laps; that is when heat soak occurs. I speak from personal experience as the only SST equipped car to not overheat at Streets of Willow last July 31 in 108* desert heat (2 other RA's and 1 MR's, that I knew personally). What is lacking in the oem cooler is direct airflow.
On a side note, you will find better results with re-routing your windshield sprayers, than trying to spray water on the oem tranny cooler while stationary. The glycol content will have a nice cooling effect until you can get airflow going again

 

honestly though, I've debated doing some kind of mod to use the windshield sprayers as a SST cooler spray (I do this kind of stuff at work a lot), but it's not allowed in SCCA and, well, won't really need it if I just got a full/proper kit (which I do now)

as for not needing a second pump, skeptical, but won't disagree. If it works, props to you (wtb a good race track in TX that's affordable). I will agree that just having a cooler that gets air is the biggest improvement. honestly it should be on the crash bar from the factory imo. even without fog lights, the openings are way too small

 

race track for sale??

 

Wrong.

Operating temp 150-190(F) [depending how long you drive and if freeway or city]
Overheat 250-260(F)

 

If you read the thread, you would have discover we already clarified Exyia is speaking in C* not F*.
Please troll else where.

 

Get em Stevo!

 

Just thought I'd bump with a find I found this weekend

while I was bedding in new pads/rotors, was playing around with evoscan and SST temps

after a few pulls, I was at 91C

I pulled over, stopped, activated the SSP cooler, tightened lug nuts (fixed a stripped wheel stud), then got back in the car
went down to 82C!

full details here
http://www.evoxforums.com/forums/sho...=57947&page=19

pretty impressive and was a huge help at yesterday's SCCA regional - summer is hitting full force in Texas and the temperatures are brutal now