turbo oil return pump

[gui67]

Hello
I have a pump for the return of oil from the turbo to the pan because the turbo is in the back.
pump from RBracing:

Is there a problem to plump the pump directly on the bottom of the turbo? I heard the pump might make vacuum in the turbo housing.
First I was planning to put a vented can between the turbo and the pump but I wonder if it is really needed or not.
What is your experience for those using a return pump?
Thanks
Guillaume

[GrabberGT]

I have no user experience but I've read somewhere that it is necessary to either let the pump run for another 30 seconds after shutdown or use a "vented can" to allow the oil to drain out so it doesnt cook inside the turbo. I do not see a can listed as a part included in the STS kits so it may not be necessary. I am interested in what you find out though as I plan on doing this myself in the future.

[PhillipM]

Here is the oil pump page out of the STS instructions. Hope this helps. Let me know if you need any other sections...

[gui67]

Thanks fgor the instructions.
the pump will be just near the turbo, with a short 10-AN line, under the oil outlet level of the turbo.
Did anybody had problems or experience with vacuum being made by the pump and damaging a turbo? could it not cause damage to the bearing?

[Rhino]

As long as your oil flow to the turbo has the ability to match or exceed the flow of your pump you will be ok.

[gui67]

the flow to the turbo will be less then the flow of the pump.
if it is more, the turbo would fill with oil and I don't think that should happen.

[PhillipM]

Hmm thats a good question. I'm sure this is all some of the reason STS makes it. Worrying about these things makes most people nervous.

[cobraguy65]

If i read those instructions correctly, there is a 3 psi switch on the inlet of the pump. If this is for the pump relay, the pump wouldn't come on unless there is atleast 3 psi on the inlet. there would not be a vacuum on the turbo as the pump would shut off at anything lower than 3 psi. Does this sound right?

[PhillipM]

Is that possibly the warning switch? I know the system has a warning to let you know if you have lost oil pressure to the turbos...

[gui67]

Or a warning switch, in case the pump does not work, in order not to fill the turbo with oil and send it in the intake?

[cobraguy65]

Or a warning switch, in case the pump does not work, in order not to fill the turbo with oil and send it in the intake?

I think this makes the most sense. i didnt realize they had a warning light.