Description

Dailey Engineering specializes in custom Dry Sump Oil Pumps, with Roots Style scavenge rotors and spur gear pressure sections, for all levels of racing engines. Our Founder, Bill Dailey, has been active for over 30 years in the design of racing engines. With the design of several world class racing engines under his belt, he now focuses his attention specifically to Dry Sump oil systems.

Our Dry Sump Oil Pumps are available in Standard size and our "SP Series" small pump design. Introduced in 2001, our small pump design has a housing body size of just 2.4" X 2.7" with a weight reduction of 33% over our current standard size oil pump. Roots Style Rotors are used in the scavenge sections for both style pumps and bronze spur gears are used for the pressure section. Drive and idler shafts are made from heat treated alloy steel and precision ground to run in ball bearings front and rear with Teflon bushings supporting the inner loads to minimize the rotating friction. Precision ground stainless steel studs are used as dowel pin alignment for a compact body size. The scavenge sections are all internally cross ported together so only a few scavenge outlet fittings are necessary. However, to achieve the maximum capacity of our oil pumps optional scavenge manifolds with -20 fittings are available. This pump operates at speeds up to 10000 rpm in drag racing applications and 7500 rpm in endurance racing applications. Our latest revision to the Subaru EJ 4 cylinder engine. This design allows the hose ends to raise up 1.5" from our original design gaining ground clearance. Pressure inlet was moved to the rear of the pump along with a Brown and Miller custom scavenge outlet hose end makes this installation complete.

Specifications

Compatibility

  • 2001-2014 Subaru Impreza WRX
  • 2002-2020 Subaru Impreza STi

Dailey Engineering specializes in custom Dry Sump Oil Pumps, with Roots Style scavenge rotors and spur gear pressure sections, for all levels of racing engines. Our Founder, Bill Dailey, has been active for over 30 years in the design of racing engines. With the design of several world class racing engines under his belt, he now focuses his attention specifically to Dry Sump oil systems.

Our Dry Sump Oil Pumps are available in Standard size and our "SP Series" small pump design. Introduced in 2001, our small pump design has a housing body size of just 2.4" X 2.7" with a weight reduction of 33% over our current standard size oil pump. Roots Style Rotors are used in the scavenge sections for both style pumps and bronze spur gears are used for the pressure section. Drive and idler shafts are made from heat treated alloy steel and precision ground to run in ball bearings front and rear with Teflon bushings supporting the inner loads to minimize the rotating friction. Precision ground stainless steel studs are used as dowel pin alignment for a compact body size. The scavenge sections are all internally cross ported together so only a few scavenge outlet fittings are necessary. However, to achieve the maximum capacity of our oil pumps optional scavenge manifolds with -20 fittings are available. This pump operates at speeds up to 10000 rpm in drag racing applications and 7500 rpm in endurance racing applications. Our latest revision to the Subaru EJ 4 cylinder engine. This design allows the hose ends to raise up 1.5" from our original design gaining ground clearance. Pressure inlet was moved to the rear of the pump along with a Brown and Miller custom scavenge outlet hose end makes this installation complete.

  • 2001-2014 Subaru Impreza WRX
  • 2002-2020 Subaru Impreza STi

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