Gt3076r

[Jason062100]

I got a Gt3076r for my RB25DET. Does anyone know if there is a built in oil feed restrictor or if you need to do that separately. I can't seem to get a straight answer. 

[Murray_Calavera]

None built in, you'll need to do that separately.

[Jason062100]

Thanks just wanted to make sure so I dont mess something up.

[Murray_Calavera]

Too easy mate, this is from Garret's website - https://www.garrettmotion.com/racing-and-performance/choosing-a-turbocharger/turbo-system-optimization/

Oil Supply & Drainage

BALL BEARING TURBO

An oil restrictor is recommended for optimal performance with ball bearing turbochargers. Oil pressure of 40 – 45 psi at maximum engine speed is recommended to prevent damage to the turbocharger’s internals. In order to achieve this pressure, a restrictor with a 0.040” orifice will normally suffice, but you should always verify the oil pressure entering the turbo after the restrictor in ensuring that the components are functioning properly. Recommended oil feed is -3AN or -4AN line or hose/tubing with a similar ID. As always, use an oil filter that meets or exceeds the OEM specifications.

Edited March 25, 2020 by Murray_Calavera

[Jason062100]

I heard somewhere that some of them came with oil restrictors built in. Is that just straight up wrong?

[Murray_Calavera]

I'm hesitant to say 'it's wrong' as I don't really like absolutes... 

However, I don't see how they could incorporate an oil restrictor as there are different sized restrictors for different applications. 

[Murray_Calavera]

Ooo just found this - 

https://www.turbosmart.com/product/opr-t40-40psi-blue/

Oil pressure regulator for your turbo, very sexy. Then you don't have to worry about correctly sizing your restrictor. Nice. 

[GTSBoy]

That's nice.

[John iatrides]

No you gotta buy the oil restrictor it doesn't come with the  turbo I had one on my gtx3076r.