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Old 07-21-2014, 08:28 PM   #5053
calispec
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Join Date: May 2013
Drives: Subaru BRZ with Delicious Innovate
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Quote:
Originally Posted by sw20kosh View Post
I have gone back to stock radiator due to a leaking robispec. I have installed the same 7" laminova core you bought (non-cross flow) into the bottom radiator hose (tight fit).

CSGmike seems to think the stock radiator will do fine providing you give it airflow. I have installed foam ducting in the front bumper area to seal off the area in front of the rad/condensor.

I have a buddy here who did the exact same thing @mkivsoopra except he has a koyo rad. We both have the ptuning turbokit and same JDL UEL header but he is running E85.

We are hitting the hot track Aug 2nd so we can compare our results.

So far he has done some uphill canyon driving boosting in the twisty curvies at 75 F ambient temps. He saw 212 coolant and 230 oil.

I haven't done any rigorous driving yet.
You are in the exact situation I am in haha. Good to know. Theoretically the engine is a closed system so dumping the oil into the coolant stream is just eliminating the middle man of the oil heating the block and then the block being cooled by the radiator. Technically the radiator shouldn't have to dissipate any more heat than it already does even with the oil cooler. (Minus the small amount of convection that occurs between the oil pan and air)

Hindsight adding that big radiator probably didn't do much other than add about 10 lbs to the front of the car. The OEM is probably much more efficient with respect to its size. I'll keep everyone posted with what I find.

I am curious if the cross flow will yield any lower oil temps with same ambient temps.

Thanks a lot for the reply! This isn't the only place I have asked and you are the first to reply (other than @xjohnx& @swift996) please keep me posted!
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