Jump to content
SAU Community

Is This An Inbuilt Oil Restrictor?

WYTSKY

By WYTSKY,
in Engines & Forced Induction

 Share

Recommended Posts

WYTSKY Veteran

WYTSKY

Posted
Posted

hey guys,

I finished installing my new turbo pretty much by myself,

My tuner told me that I need an oil restrictor inline to the oil feed line.

this is a pic from the oil feed line of my turbo (3076r), notice inside it gets smaller, is that what he is talking about or do I need that little circular thing placed actually in the oil feed line?

Thanks,

Adam

P.s I have all new speedflow fittings with braided lines

post-36975-1272926261_thumb.jpg

Link to comment
https://www.sau.com.au/forums/topic/319199-is-this-an-inbuilt-oil-restrictor/
Share on other sites
WYTSKY Veteran

WYTSKY

Posted
  • Author
Posted

sorry, was heading out the door to uni, just wanted to know so I could hopefully have an answer when I got back so thanks. Found out the answer, for people that are interested that is a 2mm restrictor inbuilt and it needs an additional 0.8mm one inline.

Adam

The Dan Grand Master

The Dan

Posted
Posted
sorry, was heading out the door to uni, just wanted to know so I could hopefully have an answer when I got back so thanks. Found out the answer, for people that are interested that is a 2mm restrictor inbuilt and it needs an additional 0.8mm one inline.

Adam

That is incorrect.

The 0.8mm restrictor is in the side of the one you are looking at. You don't need to add anything.

All this is covered in the other thread if you read it

WYTSKY Veteran

WYTSKY

Posted
  • Author
Posted
That is incorrect.

The 0.8mm restrictor is in the side of the one you are looking at. You don't need to add anything.

All this is covered in the other thread if you read it

Hmm, interesting, now that I have had some time I read through the other thread.

So why would my tuner say it is required to install an additional .8mm inline restrictor then? and he is aware of the existing 2mm one in the turbo.

this wouldnt have anything to do with the fact that the car was N/A and now turboed? the oil pumps would be the same if not mine would be weaker then a standard GTST pump?

P.s for the smart asses - my tuner is not me, he is an extremely reliable mechanic who knows skylines in and out and is often spoken off on these forums.

Cefiro RB26 Apprentice

Cefiro RB26

Posted
Posted
Hmm, interesting, now that I have had some time I read through the other thread.

So why would my tuner say it is required to install an additional .8mm inline restrictor then? and he is aware of the existing 2mm one in the turbo.

this wouldnt have anything to do with the fact that the car was N/A and now turboed? the oil pumps would be the same if not mine would be weaker then a standard GTST pump?

P.s for the smart asses - my tuner is not me, he is an extremely reliable mechanic who knows skylines in and out and is often spoken off on these forums.

he sound like a good tuner

most turbo's only need a certain amount of flow. he would have done an oil return test and decided that there was to much flow. normal less than 2L per minute. 1.8 for BB

To much flow will actual reduce efficiency of bearings hence boost response. possibly push oil past the seal and get smokey as well.

pay him to do it he most likely will have a few to test from to work what is best

The Dan Grand Master

The Dan

Posted
Posted
Hmm, interesting, now that I have had some time I read through the other thread.

So why would my tuner say it is required to install an additional .8mm inline restrictor then? and he is aware of the existing 2mm one in the turbo.

this wouldnt have anything to do with the fact that the car was N/A and now turboed? the oil pumps would be the same if not mine would be weaker then a standard GTST pump?

P.s for the smart asses - my tuner is not me, he is an extremely reliable mechanic who knows skylines in and out and is often spoken off on these forums.

No it has nothing to do with N/A and Turbo, the oil pumps are the same. The garrett turbo you have does not have any 2mm restrictor in place. It has an oil inlet that is approx 2 or 3mm in diameter, then on the side of the tube internally it has a 0.8mm hole that feeds oil to the bearings. You DO NOT need to add anything except it is recommended to put a filter inline to protect the turbo against oil contamination as suggested above.

You can add as many restrictors as you like, but you will slow the oil down that is heading to the inbuilt one. This will reduce oil flow to the turbo and possibly damage it. The only sure fire way to know is to doa flow test from the return pipe and contact Garret to find out what that particulat turbo needs to have as oil flow. You will find it will be within their specs with the inbuilt one

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Ye i can confirm the above - When my GT30 was rebuild and pulled apart i got all the old pieces in a bag.

The restrictor is internal, what you see on the outside is not actually the full story of what's going on inside :(

The Garrett turbos used to come with a "fact sheet" about this stuff - doen't they have it anymore? (was a brief warning etc)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • The Bogan
      NC MX5

      By The Bogan · Posted

      Yeah, it's getting like that, my daughter is coming over on Thursday to help me remove the bonnet so I can install the Carbuilders underbonnet stuff,  I might get her to give me a hand and remove the hardtop, maybe, because on really hot days the detachable hardtop helps the aircon keep the interior cool, the heat just punches straight through to rag top I also don't have enough hair for the "wind in the hair" experience, so there is that....LOL
    • joshuaho96
      Cas issue

      By joshuaho96 · Posted

      Could be falling edge/rising edge is set wrong. Are you getting sync errors?
    • joshuaho96
      Jacks that fit under GTR lips that can reach the subframe?

      By joshuaho96 · Posted

      On BMWs what I do because I'm more confident that I can't instantly crush the pinch welds and do thousands of USD in chassis damage is use a set of rubber jacking pads designed to protect the chassis/plastic adapter and raise a corner of the car, place the aforementioned 2x12 inch wooden planks under a tire, drop the car, then this normally gives me enough clearance to get to the front central jack point. If you don't need it to be a ramp it only needs to be 1-1.5 feet long. On my R33 I do not trust the pinch welds to tolerate any of this so I drive up on the ramps. Before then when I had to get a new floor jack that no longer cleared the front lip I removed it to get enough clearance to put the jack under it. Once you're on the ramps once you simply never let the car down to the ground. It lives on the ramps or on jack stands.
    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy · Posted

      Nah. You need 2x taps for anything that you cannot pass the tap all the way through. And even then, there's a point in response to the above which I will come back to. The 2x taps are 1x tapered for starting, and 1x plug tap for working to the bottom of blind holes. That block's port is effectively a blind hole from the perspective of the tap. The tapered tap/tapered thread response. You don't ever leave a female hole tapered. They are supposed to be parallel, hence the wide section of a tapered tap being parallel, the existince of plug taps, etc. The male is tapered so that it will eventually get too fat for the female thread, and yes, there is some risk if the tapped length of the female hole doesn't offer enough threads, that it will not lock up very nicely. But you can always buzz off the extra length on the male thread, and the tape is very good at adding bulk to the joint.
    • Duncan
      Mistakes were made, my R34 Story

      By Duncan · Posted

      Nice....looking forward to that update
×
×
  • Create New...