Quote:
Originally Posted by BWS_86
When you get a chance, could you explain (or show) where your oil&water lines for the turbo will be going? Reading through your earlier posts you said "The K20Z3 water pump and housing will be used to supply the coolant feed line for the turbo." I thought that the barb on the front of the water pump was for the oil cooing on the stock engine. Maybe I'm misunderstanding or there is another line that I'm not seeing.
Thanks for the help!
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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?