Quote:
Originally Posted by Irace86.2.0
Pretty simple: I’m basically using the stock water feed and return location for my turbo that is normally used to cool the stock oil cooler like you mentioned. I am using a Greddy external oil cooler sandwich plate to run oil lines to my Jackson Racing radiator/oil cooler.
The K20A2 or k20Z3 has a port on the water pump for the supply. The return goes into the block near the oil pressure sensor as pictured. The feed line will go to the low side of the turbo, which will be clocked at 20 degrees, and the return will leave the high side of the turbo. This is designed to create a thermal siphoning effect when the car stops to cool the turbo down.
If someone was dead set on using the stock oil cooler then they could run the feed to the cooler, and then run the oil cooler return to the turbo as the feed to the turbo, and then run the turbo return back to the block. This will cool the turbo less effectively, but it should still do something. The alternative is to run the feed directly to the cooler, and then run the turbo return into the oil cooler, and then out, but the turbo will heat the water so much that the oil cooler will be far less effective. In the other way, the differential in temps is so high, warmed water from the oil cooler is probably still no where near hot enough to ruin the cooling effect.
Clear?
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Okay, I understand that better. The port on the K20A2/Z3 water pump is for moving water to the stock oil cooler. (I'm dumb and thought it was moving oil for some reason). So let me see if I have this straight:
Water line from K20A2/Z3 water pump --> Turbo Water Feed
Water line from Turbo back to block --> Turbo Water Return
Oil line from Jackson Racing Oil Cooler --> Turbo Oil Feed
Oil line from Turbo back to Greddy Sandwich plate --> Turbo Oil Return