Is This An Inbuilt Oil Restrictor?

[WYTSKY]

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

[WHITE R32]

garrett bb turbos are internally restricted so just run a braided line

with an inline particle filter i reccomend also

[The Dan]

OMG we didn't just answer this question 5 minutes ago either. Use the search function

[The Dan]

8th result down after a search for restrictor brings this up: http://www.skylinesaustralia.com/forums/Oi...p;hl=restrictor

[WYTSKY]

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]

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]

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]

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]

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]

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)