A while back I turned the set screw in on the STS oil return pump to an attempt to get the oil buzzer fom sounding during higher boost (over 6psi).
Well it works, but I think it causes other issues, like oil getting into the exhaust since the pump doesn't go into high speed mode as soon as it did before.
Anyone that has the STS system happen to know how many turns out from bottom the set screw should be at?? I want to set it back to STS's specs.
I never bothered to check this before I messed with it.
I'll UPS you a six pack if you know the answer for certain.

 

Turning the screw on the pressure switch at the pump will only change when the buzzer goes off. The pressure switch under the hood dictates when the pump turns on high. The rear is normally set at 3psi and the front at 1psi.
There can be 2 things that cause the oil issue. One is you need a higher flow pump which STS sells. They use it for higher boost cars.
The other is that you have the typical check valve issue and as the truck sits, oil is dripping into it and will spill over in the housings.

 

What is "higher boost" that would require a higher flowing pump? 8-10 psi or higher than that?

 

I would say anything above 8psi.

 

Interesting, I have not had any issues with the normal pump. Do you know why? I have pushed up to 23psi with no issues. Just wondering....

 

I dont know. Could be the differences in routing. We usually dont have issues with the pumps either, but some do.

 

The pump on my set-up works properly, its just that the buzzer had been going off under higher boost. Thats why I adjusted the level which the buzzer went off by turning the set screw in on the pump's pressure sensing switch.
What I would like to find out if anyone happens to know is, where is the set screw at from fully bottomed out so I can reset mine back to STS's oroginal placement.
Still waiting on the answer for the six pack prize.

 

The pressure switch at the pump has NOTHING to do with when the pump goes to high. If your trying to solve an "oil in the exhaust" issue, you can screw with that all day and it wont change anything. It only controls when the buzzer goes off.
There is a pressure switch in the front harness and that controls when the pump turns on high. If it hasnt been changed, then I doubt there is anything wrong. It is set to make the pump turn on high at 1psi.
If you have oil in your exhaust, it is normally a check valve. The check valve will close not allowing any oil to get into the turbo if there is no pressure behind it. If the it doesnt seat in when you turn the engine off, then oil will drip into your turbo. When there is too much oil in the turbo, oil will spill over into the housings, usually the turbine housing first. That will result in "oil in the exhaust".
I'm not interested in the 6pack, but unless I dont understand your question, that is the answer.

 

I think TG02Z71 wants to know how many turns to turn the screw out to get to the stock setting of 3 psi to get the warning buzzer to go off. When he was having problems with the buzzer going off he just screwed the adjuster all the way in and did not count the turns he took to do it. Now he wants to set it back to the stock position and would like to know approximately how many turns it will take.

Mine is working great so I don't want to mess with it in case I screw it up.

 

Yup, thats what I was looking for, but I got more from the answers here so thanks guys! I guess I'll just install a switch to put the pump into high speed mode so I know its doing what it should especially under higher boost when I click the two-stage controller to the high setting.
thanks trtturbo for your input, it is appreciated.