(Posted also in Road Racing Forum)

I have major oil temp issues when I track my car. Temps quickly go over 300* ........ they are around 210-220 normal driving.

I have tried using the Engine Oil Cooler (EOC) in my Dewitts. I have tried using an external cooler (11x8 B&M) with the same results. The external cooler is located behind the driver front wheel well (wheel well liner is cut to access fresh air)

Here are the possible changes I am considering and would like input on these or any other suggestions would be great. Keep in mind that I alread have a very large cooler for my tranny sitting in front of my radiator condensor.....this is obviously the best place but my car is an A4 and must have this cooler here.

1. Move the cooler (or one that fits) to the front bumper area. Where the Z06 fog shrouds are open. Or open the front license plate area.

2. Stack another cooler in front of the radiator possibly affecting air flow to my Calloway Honker or the tranny cooler and radiator.

3. Run another cooler in series

4. Run same or other cooler from bumper area in series with the EOC in the Dewitts radiator.

If running two coolers causes an oil pressure issue is there a remmedy such as larger oil pump.

Thanks,


DH

 

Howie! By moving the oil cooler from fender well to just behind the front license plate / screen you will get better air flow. I used this location for my tranny cooler with good results. If you mount cooler in front brake cooling duct your next complaint will be cracks in your brake rotor on track days. I am surprised you haven't gone with a full race brake cooling system now that you are in the AARP sub 1.40 club at Willow Springs.

 

Moving in front of brake duct was not one of the listed options.

Any thoughts on oil pressure loss from two coolers ???


DH

 

I run two in series and see very little difference before and after their addition. Oil pressure's come right up at startup also. Just as other's had mentioned, up front will let it see much cooler air. Separate it's air path away from the radiator.



Arnel

 

Arnel

Are you saying that you see little difference in oil pressure or in oil temps.

What are your oil temps and where are your coolers, and what size are they ?????


DH

 

During my second time at Thunderhill (and prior to the oil coolers) I'd see temps in the mid 280's. Since I'm a 408 iron w/ big blow dryers, I installed two in series and right up front where the fog lamps sit (I use the tigershark front). Definitely work since the next time out I stayed right at mid 270's. Now after seven track days, I can still go through 25 minute sessions all day and barely hit 285 in oil temps. That's with about 95plus ambient temps. Oil pressure, before I put the coolers in versus after, hasn't changed at all.


Arnel

 

Arnel

Would your cooler setup work in the stock front end or in the Tiger Shark necessary.

Which kind/size are your coolers???
Any Pics ????


DH

 

Since you don`t want to block the brake ducts I think Frank`s set-up would be a good one!
Temp reduction should be as good or better than the brake duct location, canyon carving on the hottest days (97*+) I saw aprox 20*+ reduction in tranny temps with stad-alone cooler in the brake-duct cavity, even more on cooler days!

 

They are 7x15, 1/2" tube. I've since removed the fog lamps and moved them further out of the radiators air path. You'll have to see if the stock fascia will work with the cooler locations in the pic, just moved 3 inches outwards. I believe this would still place them above the brake ducting (as in my tigershark ducts) and with some shrouding could separate their air paths up past the head lamps (into the engine bay), away from the radiator. Unless your venting down into the fender well, definitely vent the hood as others are recommending.

Arnel

 

Rick

Although I'm not sure exactly what if any cooling actually gets to the front brakes thru those ducts I would not block them as I intend to keep tracking the car. I would think there is more room in the fog shroud area. How big a cooler did you get in the brake duct spot. Did Andy put it in ?????????

Glad you got good results on the canyon runs


DH

 

Arnel

That is a fabulous job. I hope you don't mind .... I am going to post your pic in the thread I started in RoadRacing Forum.

Maybe the TigerShark changes things. But in the stock setup the air passing thru the fog shroud goes up and over the radiator shroud into the engine bay. It doesn't go thru the radiator.

I am hesitant to cut holes in my hood. This will be a last resort. I do remove some of the rear hood seal rubber as some think air will escape thru the back hood and over the windshield. But others say this is a high pressure area and the reverse happens.


DH

 

Thanks and yea.. no prob.. Well if it goes up and doesn't mix with the radiator air path, then great. Mine would, which is why I've set them further apart then in the pic and channeled their air to go up and over the inner fenders. Hopefully, the addition of oil coolers is all you'll need and you can leave the hood as is... at least you know, if you need to, there are additional things you can do to help.

Arnel

 

Arnel

I've never seen a Tiger Shark setup ... only pics or from a distance.

Is it that you no longer have a radiator shroud and all air enters the front, none from the bottom????


DH