Stock oil cooler, Inlet/Outlet Options

[Chad911sc]

Which hole is the inlet for the stock oil cooler and which is the outlet. It flows up from the oil pump to one of the holes and into the stock oil cooler and then back into the engine. I need to know which one is which because my flow for my external oil cooler/fan combo is directionally dependent going through my oil thermostat. I was told it was outlet at the top and inlet on the bottom by the sales rep, but after looking closely at my case, it looks like the outlet is at the bottom.
I think the blue path is the outlet to the stock oil cooler, and the red path is the inlet back into the engine…is this correct??

[Superhawk996]

I’m on the road and don’t have access to a case.

Your lines are drawn wrong. The oil flow is not direct from the pump to the cooler as you’ve drawn it.

They flow from the oil pump to the oil filter console 1st - refer to the oiling diagram I posted in the other thread. This is why you had the issue with failure to prime.

After the oil departs the filter it flows to the galley shared by the oil cooler inlet, the oil pressure sensor hole, and the oil pressure relief piston. I believe this is the top hole you’ve marked in red. Apologize - on vacation and don’t have a case to 100% verify but I’m 99 % certain going from memory and the photo you posted + the one I’m posting below.




After the OE oil cooler the oil flow to the main galley

Here is the main galley in green


I should probably keep quiet but here goes. (IMG:style_emoticons/default/stirthepot.gif)

The aftermarket oil cooler as you have designed it is likely less effective than the OEM cooler. Why? Because your cooler design will be drawing hot air that’s under the trunk across the cooler rather than cool ambient air that the OEM cooler gets directly from the fan housing. The cool airflow volume provided by the OEM centrifugal fan will be much greater than what you can get from that blade fan. This under trunk air is hot and preheated by the engine and the exhaust. Especially when the car is not moving. Not very effective.

Usually these under trunk aux coolers are in addition to the OEM cooler not instead of the OEM cooler.

I don’t have engineering calculations at hand to prove this with certainty but I’d wager that if we put pencil to paper - the OEM cooler is more efficient.

I know you probably don’t want to hear that but it’s something you should consider that I suspect you’ve overlooked in the move toward aftermarket parts and the marketing claims they often make.