Oil Return question?
Registered User
Joined: Feb 2002
Posts: 5,645
From: Bridgewater, MA
Back to my statemnt though, think of the oil drain fitting coming out of the turbo straight down... you can angle it ~20-25 degrees toward the oil pan (this is for the oil drain/feed). The water side should be pressureized with water to cool the bearings.
Thread Starter
Registered User
Joined: Oct 2000
Posts: 1,531
From: Tucson, AZ
Its my first rodeo and you guys are helping me a ton! Thanks.
If you asked me a month ago I had no intentions of turboing my car. A deal fell in my lap and next thing I know Im trying to figure out WTF is going on.
Registered User
Joined: Jul 2006
Posts: 164
From: h-town, ct
ahahah no problem . hell if i knew just one tenth of what i know now back when i got into forced induction id having 3 working cars and be a slightly less poor man. of course, if i knew 1/100 of what jon did, id be making kits myself 
Registered User
Joined: Dec 2000
Posts: 1,320
From: Alta Loma, CA
Watercooled means its a ball bearing turbo. It takes oil in and out for lubrication, and on the sides the coolant/water goes in and out for cooling.
The prehistoric turbos are the oil only ones (standard journal bearings).
...
PM 182z28with18s as he runs a BB turbo. Ask him how his cooling setup is.
The prehistoric turbos are the oil only ones (standard journal bearings).
...
PM 182z28with18s as he runs a BB turbo. Ask him how his cooling setup is.
Registered User
Joined: Feb 2002
Posts: 5,645
From: Bridgewater, MA
As far as I know, all ball bearing turbos require water cooling. You should have a oil inlet and outlet on the center cartridge, and then 90 degrees from that should be a water inlet/outlet.
You have a standard Precision T76GTS right? Thats not a ball bearing turbo.
You have a standard Precision T76GTS right? Thats not a ball bearing turbo.
Registered User
Joined: Dec 2000
Posts: 1,320
From: Alta Loma, CA
That's what I have. Here I thought I has gotten the best model for my mostly street-driven car. Can I upgrade a turbo later to incorporate a ball-bearing setup?
Registered User
Joined: Jul 2006
Posts: 164
From: h-town, ct
you could but honestly for what it will cost you, its probably not worth it. the ball bearing will decrease spool time by a few hundred rpms but nothing dramatic though for a street car this might be nice, the real advantage water cooling has is the reduction of coking the bearings due to oil temps being too high by keeping temps under the coking threshold
Last edited by subarubill96; Jan 24, 2008 at 03:26 PM.
Registered User
Joined: Feb 2002
Posts: 5,645
From: Bridgewater, MA
You have the most power T4 Precision/turbonetics turbo out there (ignoring the new turbos offered by Jose @ Forced Inductions). IMO, BB isnt worth the cost upgrade unless you get a deal on one.
Registered User
Joined: Dec 2000
Posts: 1,320
From: Alta Loma, CA
you could but honestly for what it will cost you, its probably not worth it. the ball bearing will decrease spool time by a few hundred rpms but nothing dramatic though for a street car this might be nice, the real advantage water cooling has is the reduction of coking the bearings due to oil temps being too high by keeping temps under the coking threshold
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