So, I went to my tuner today and was told that I would need an oil restrictor for my set up... which is

Garret t3/t4 .57 trim turbo w/ 63A/R on a bone stock B16A3 w/ a -3AN oil feed line supplying the turbo. Do I need one and if so... where can I get one w/ a -3AN fitting.... preferably a flange if at all possible...

 

Possibly. if your tuner is stating that you're getting too much oil pressure into the feed line, that may be the sign of needing one (I wouldn't go any smaller than .060").

If there are signs of oil burn, it could also be the way that the return line is run. If there is a kink in the line, or it is running too long, the oil could "back up" and come in contact with the cartridge, causing smoke. Check that as well, before ultimately deciding on a "restrictor".

Don't purchase one until you know PRECISELY what size opening you're getting.

 

if its not ball bearing there is no reason for a restrictor on a 3an line.

 

I just took the car to him today to get him to look over the work I had done before tuning it, just to make sure there wasn't any obvious "beginner" mistakes (this is my 1st build) I had made before our tuning session this coming week...

Any suggestions on where I can get a -3AN oil restrictor flange? Function7 has one that I was looking into but I can't find where they're selling one (even on ebay)

 

I have heard this too on other post! I'm SOOO CONFUSED!!! :/

 

The long and short of it is there's a recomended oil pressure for your turbo and you don't know if your getting too much too little or just enough until someone measures the oil pressure at the feed line. Then you still need to know what oil pressure the manufacturer recomends.

Spoolin Performance sells feed flanges that are -3 and undrilled I belive... that way you'd be able to drill it out little by little till you're getting the exact pressure you want.

Good luck.

 

I've heard .065 is recommended from Garrett on this particular turbo...

 

It's not even about whether or not it is ball-bearing in THIS particular instance. The issue is whether or not you're kicking out too much oil pressure from the feed (due to oil pump modification, pick up, or whatever) in which you're over 100psi of pressure at WOT or 20-40psi of pressure at idle. This is why I stated TO FIRST CHECK YOUR OIL PRESSURE AND YOUR OIL RETURN LINE before you purchase a restrictor, and MAKE SURE YOU KNOW WHAT SIZE RESTRICTOR YOU ARE LOOKING AT BEFORE YOU PURCHASE.

It can be confusing, this is why these checks need to be performed first before buying.

 

my feed line is coming from an oil sandwich adapter on my oil filter and is one piece... How would I go about testing the pressure through the feed line?

 

Hook up an oil gauge in line some where, get a T fitting of some sort.

 

my quote is what i have practiced for over 5 years now.

 

well... called atpturbo.com today and was informed that this particular turbo required an oil restrictor (.065 thou to be exact). Ordered the parts and will install for peace of mind. BUT... on the other hand, was also informed by some other folks that a -3AN oil line on a 57 trim would suffice and that troubles start appearing on a smaller turbo w/ -4AN lines though... All very interesting stuff here... hmmm... :D

 

If your feedline isn't already setup to test the pressure, then surely your tuner can't know for sure that you have an issue, and need a restrictor. My opinion follows that of SpoolinMatt, if that means something.

 

running the recommended restrictor opening w/ a -3AN line won't constitute oil starvation would it?

 

Depends on what your oil pressure is at the feed line.

 

FWIW, I had Precision rebuild a T3/T67 HO journal bearing for me about a year ago. They told me not to run a restrictor with a -3 line. Installed turbo with no restrictor. Tons of blue smoke. Put in a .065 restrictor and no more smoke. However, now I have a steady leak at compressor. My return looks like this:



...and I run two -10 off back of block to a catch can. Precision still thinks I have a problem elsewhere. My thoughts are the damage was done by not running a restrictor from the start, and now I have this leak.

 

I havent had to run a restrctor to my 30r . The pressure never gets above 70 psi uder boost . At regular driving speed 3k rpm it stays steady at 40 psi.

There is no smoke or any signs of too much oil going to the turbo.There is no built in restrictor in the turbo itself.

 

how exactly do you think 100psi MAX of pressure from a fluid is going to destroy or deteriorate a steel ring seal, especially in such a short time frame?

 

Just buy a Borg Warner next time...these things love oil . I think you're supposed to run a -4an with them even....mine is fine on the -3an so far

 

Its really not that hard to hook up a gauge inline, we do it for all of our turbo setups because each car is a little different, you want to be around 25 to 35psi at idle . A lot of companies can suggest something as a recommendation. A lot of the precision turbo require you to run a -4 with no restrictor, we still will hook up an inline oil gauge to make sure pressure is where its suppose to me.

 

http://cgi.ebay.com/ebaymotors/1-8-N...Q5fAccessories

this is what I run on my car. works great and its dirt cheap. IDK how you said you couldn't find one on ebay.

 

I already have an oil line and was looking for the restrictor ONLY. All good though now, got the correct size restrictor from atpturbo the other day...

 

I have no idea. I'm not very familiar with internals of turbochargers. All I know is I was told not to run a restrictor, and it resulted in alot of blue smoke.

 

there is your problem

 

So why don't you enlighten us all?