A MUST READ for Oil Temps for Tracking

[tadams72]

Also, not being critical of anyone's efforts! You guys are out there driving and trying different approaches. I'm sitting back here with a half built motor stealing your ideas.

[X25]

Originally Posted by hcsi99

I'll try harder next track day.

My apologies if I came across rude. You can obviously drive your car however you would like! There is no one right way of driving, either. I am merely saying that since our driving style and the environment (venue) is different, it would be very hard to compare numbers 1:1. In that sense, I am trying to compare people's results only with their own previous results.

Back to the topic, I think your location for the dual coolers is optimal (short of putting them outside the radiator ducting area). Since it is very close to the radiators, I don't think the crash beam would impede your flow, either. I still question the wisdom of dual cores since one large core also had the same results with less pressure drop, but I understand that it is debatable

[hcsi99]

No worries, I'm slow.

[X25]

From my build thread:

Originally Posted by X25

Just got the oil test results today. This is from the time when I went to track with my first oil cooler setup, with which I hit 290+ degrees F in just a few laps. Actually, my best lap video shows the oil temp at 297 degrees F! As I've expected, Mobil 1 EP 5W-30 holds up just fine



Since I did not see temps above 270s with the bigger core, I believe I'm all set.

[Orange Crush 1LE]

X25, that's good to hear and what I expected

We received first-hand info on allowable max temperatures from the chief engineer of the Viper V10 (probably similar limits for the LS3):

Coolant: Do not exceed 255 F (I back off at 240-245 F)
Oil: Do not exceed 300 F (I want to keep mine below 285 F)

So as long as you stay below those (hopefully with a comfortable margin) and you track with new, fresh synthetic oil of your favorite flavor, you should be relatively safe.

[White_SS/RS]

I've had similar results with M1 5/30. It takes heat very well, I'll post up my analysis when I get to my computer.

[jamestown]

Originally Posted by X25

From my build thread:

Thanks for posting this! Great info to have.

[JusticePete]

As good as the results are, I am still concerned about 5/30 oil over 290 degrees. It is so close to the 300 mark. We are depending on the accuracy of the gauge.

[X25]

Originally Posted by jamestown

Thanks for posting this! Great info to have.

My pleasure. Mobil1 is actually a pretty decent oil. Now that my oil cooler setup is much more stout, I expect that the oil will last quite long.

[X25]

Originally Posted by JusticePete

As good as the results are, I am still concerned about 5/30 oil over 290 degrees. It is so close to the 300 mark. We are depending on the accuracy of the gauge.

Indeed, which is why I upgraded my oil cooler core. The thinking is that if 297 was OK for the oil, 270 should be pretty safe. Please also note the flash temp of sample (which is admittedly more important for some other engines with piston squirters, etc) was 436 degrees F.

There gauge seems to be pretty accurate by the way, at least in low temps that I tested. I'm also measuring the hot oil coming from sump (as we all probably do), not the cooled oil.

[Norm Peterson]

Originally Posted by X25

I still question the wisdom of dual cores since one large core also had the same results with less pressure drop, but I understand that it is debatable

Might that mostly depend on whether the dual core setup connected the coolers in series vs in parallel (like it appears was done)?


I think I'd have fabbed up some ducting, probably removable for street duty (and easy replacement in the event of a off), before cutting the bumper beam. That beam also contributes to the chassis' torsional stiffness.


Norm

[X25]

Originally Posted by Norm Peterson

Might that mostly depend on whether the dual core setup connected the coolers in series vs in parallel (like it appears was done)?


I think I'd have fabbed up some ducting, probably removable for street duty (and easy replacement in the event of a off), before cutting the bumper beam. That beam also contributes to the chassis' torsional stiffness.


Norm

I'd not cut the beam; period. We talked about installing in series vs. parallel, and I think the current examples so far have been in series. If I were to switch, I'd definitely do in parallel, but that might reduce the effectiveness of individual cores (since the flow will be split), but I have no idea if that would have a significant impact.

[BaylorCamaro]

X25 - what is the p/n to the core you're using in your new set up? Link to where you got it?

[X25]

Originally Posted by BaylorCamaro

X25 - what is the p/n to the core you're using in your new set up? Link to where you got it?

I listed it in my how-to: http://www.camaro5.com/forums/showthread.php?t=381050

50-948-7612 Setrab 48 row Series 9 oil cooler

I got it from improved racing. You'll see the link if you search the part number on Google.