Hello everyone,

i don't really have a major problem but in the track 3 hot laps and the oil temperature will reach 110-130 Celsius, I've got an Setrab oil cooler on my Evo 9 and an Intercooler,

what i am looking for is to do something for endurance races, but also i don't want to go with dry-sum?

what do you recommend guys??

 

How long are your endurance races? Is there adequate ducting to the oil cooler? Do you have a fan on it? What size is it?

 

Stock cooler location? Ducting? Session length? My 9 with the OEM setup operated flawlessly for 30min sessions. However a guy on here (Balrok) has an ST3 evo. He installed a pusher fan in front of the OEM cooler and saw drastic reductions in oil temps after long sessions here in the hot south. He has the logs to prove it. I plan on relocating mine to the drivers side middle of the front grill. There is a thread in the motorsports section titled "cool cooler" or "cooler cooler " with a good write up with pictures of a very similar and affective relocate.

 

I've never had a problem running my car in 43*C / 110*F with the OEM oil cooler during 20 minute sessions.

My car isn't running too much power though, so YMMV.

 

lets talk about the 24hr races, and yes there is the stock oil cooler ducting, no fan on it , the size is 12"x11"x2"

 

do the radiator help reducing oil temps? why would the location play a role in reducing oil temps?

do an oil pan helps ??

 

rather than a radiator i would suggest a thermostat that cracks open at a lower temp. a big oil pan like ams/moroso would definitely help since you will have more oil to absorb the heat. But I think those are just band aid fix. I would suggest adding the fan on the oil cooler since that is the cheapest and easiest route and see how big it helps. If its not enough then a bigger oil cooler and/or relocating it would be your next option.

 

In a 24hr race, the oil will heat soak whether he has 5 qts, or 15. I would still do a high capacity pan. And a get cooling package that keeps the oil in the 85-100*C range, closer to 85 if possible. That will keep everything happy. The engine builder for the trophy truck also does nascar stuff, and these are the temps he told us is to shoot for. As a result, the trophy truck has the largest oil cooler setrab makes. This keeps the oil around 85* in a 7.5L 900hp small block v8 that's pushing a 6,300lb truck through the desert at speed.

And yes, if you have a radiator that keeps coolant temps in the same range, around 90-100*C, it will help the oil stay a bit cooler. A cooler thermostat will not help with this. In an endurance car, I wouldn't run a Tstat, for reliability. Just use a restrictor to properly slow coolant flow.

That cooler should be enough. try putting a 10" fan on it, and making sure the ducting is really getting air into the cooler.

 

thanks guys for your help yeah i thought the same but needed someone to convince me , and from where can i get a cooling package to operate between 85-100* ??

 

Which radiator you use, guys?

 

I use OEM radiator