Oil Pressure Q.

[RustyNut]

Hi People

Can anyone tell me what pressure an ABY oil pump puts out? I need to get a replacement restrictor for my GT3071r and need to match the size of the hole in the restrictor to the oil pressure.

Cheers

Russ

[A80Avant]

you can get the restrictor directly from 034 and it will do the job.
I think it makes 5bar max though

[RustyNut]

Need to get one this week as we're hopefully going to start the engine this weekend. Turbo Dynamics sell them but need to know what the oil pressure is to supply the correct one.

[Rusty]

my ABY on 15w50 does 4 to 5 bar when revving and 2 bar stationary, all at 90deg temp.

[RustyNut]

Just spoke to them again and what they need is the actual pressure as it hits the turbo. Has anyone tested the oil pressure at this point? Needs to be acurate as I run the risk of either starving or over supplying if the restrictor is wrong.

Cheers

Russ

[terrybullwon]

ATP will have one, i have you can have some where but i cant get my hands on it to the weekend. They are just a generic garrett part

[RustyNut]

By all acounts the thread size and body is generic only the size of the restricting hole that differs?

[Jamo]

0.035 hole size is used by 034 IIRC

You'll find off the shelf are 0.030 to 0.040 in size for the Audi application

Garrett quote

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 insure 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.

Just use an off the shelf item

[RustyNut]

Thanks Jamo & cheers for the offer James. I'm still waiting to hear back from 034 to confirm the size they supply their Turbos with.

Russ

[RustyNut]

Quick update. Heard back from 034 and they confirmed they use the 0.040 hole size.