OPR T40 Oil Pressure Regulator 40psi (Blue)

Will this stop my Turbo from blowing smoke?

Very likely, yes. It is a common misconception that turbos have seals that leak when they fail. Turbocharger seals are more like piston rings in an engine and are designed to keep oil out of the exhaust and, equally, exhaust out of the oil. They work on an assumed oil pressure profile or usually around 40psi – If you have higher oil pressure than that in your turbo, it can get straight past the ‘seal’ and cause smoking. It’s common to see this on startup on some engines where ‘cold’ engine oil pressure is relatively high.

Will this work for all turbos?

No. The 40 psi these are set at is suitable for Ball Bearings and other modern turbochargers of various bearing designs. You should check with your turbocharger manufacturer about the supply requirements – We’ve found 40 psi suitable for most modern & high-performance turbochargers on the market.

Can I use it as a T-piece for my twin turbo engine?

No, you will need a separate T-piece. There are three fittings for the oil system – In, Out (to the Turbo) and bypass (to your engine oil supply/sump etc). There is also a 1/8NPT port for either a pressure gauge or a sensor.

Can I use just one OPR40 for a Twin Turbo?

Yes. You will need to 'Tee' the Oil line after the outlet of the OPR40. As mentioned above, this cannot be used as a T-piece, but a T-Piece on the outlet will provide enough oil flow for 2 Turbochargers.

Is the Turbosmart OPRT40 adjustable?

No. We’ve pre-set it to 40psi as this is the ideal pressure for most ball-bearing turbochargers. We’ve pre-set it & not provided any adjustments to ensure you don’t have to risk your valuable turbocharger on startup by setting or adjusting the regulator – It’s good to go straight out of the box.

Will this always produce 40 psi?

Ultimately, 40 psi was chosen as a target pressure as it sits firmly in the middle of the window of oil pressure requirements, for most common / performance ball-bearing turbochargers. It does not need to be exact, but the OPr40 is quite precise. It is, however, limited by its fitment. As a guide, you will need at least 40 psi oil pressure. A regulator cannot create pressure; it can only modulate it. Equally, it can only modulate if there return lines are plumbed without restriction. A restricted return line or introducing the return line into a high-pressure area (such as a Turbo main oil drain) can impact the OPR40's ability to regulate the pressure.