89GT 5spd 3400 Turbo
Posted: Sat Aug 27, 2005 3:51 am
(berettaspeed @ Aug. 26 2005,23:19)Q
U
O
T
Emy drain tube is still aproblem i hope it doesnt crap out on me. but its -8 and the in is -6.
 its not goin to the track anytime soon. i hate myself im too slow
You should really use something larger for the return.  You really need a minimum 1/2" to 5/8'" inner diameter for proper drainage.  If the return is too small you will push out the oil seals inside that turbo. Then it will smoke like a train and you are going to need an expensive rebuild.  An inline oil filter  for the feed line is also a really good idea.  If you tee into the line for the oil pressure sending unit, you may be sending unfiltered oil to the turbo. That's a big no-no. The clearance between the shaft and the bearings inside there is about .001" and the shaft spins between 90,000 and 120,000 rpm.  Any contamination or small metal particles that get in there will chew it right up.  I know this from personal experience. I destroyed a very expensive, brand new turbo this way.  Take my advice and learn from my mistakes on this one.
And be patient. Nothing good ever comes from being in a hurry when you are doing something like this.  I spent 2 1/2 years putting my car together and it's still not "done."  Relax it will happen.
U
O
T
Emy drain tube is still aproblem i hope it doesnt crap out on me. but its -8 and the in is -6.
 its not goin to the track anytime soon. i hate myself im too slow
You should really use something larger for the return.  You really need a minimum 1/2" to 5/8'" inner diameter for proper drainage.  If the return is too small you will push out the oil seals inside that turbo. Then it will smoke like a train and you are going to need an expensive rebuild.  An inline oil filter  for the feed line is also a really good idea.  If you tee into the line for the oil pressure sending unit, you may be sending unfiltered oil to the turbo. That's a big no-no. The clearance between the shaft and the bearings inside there is about .001" and the shaft spins between 90,000 and 120,000 rpm.  Any contamination or small metal particles that get in there will chew it right up.  I know this from personal experience. I destroyed a very expensive, brand new turbo this way.  Take my advice and learn from my mistakes on this one.
And be patient. Nothing good ever comes from being in a hurry when you are doing something like this.  I spent 2 1/2 years putting my car together and it's still not "done."  Relax it will happen.