Subaru Engine Services

Quantum Performance offers multiple specialty services for rebuilding or upgrading the Subaru EJ and FA series engines and their accessories. Below are a few of the unique services we offer to compliment and improve these platforms, whether you are simply re-conditioning or building for more power.

• OEM or Upgraded Pre-Assembled Short-Block Options (Including our very own best selling Stage 2)

• Cylinder Head Reconditioning Service

• Over-Sized Valve Upgrades

• Aftermarket Cam Installation and Valve Lash

• CNC'd EJ20 to EJ25 Cylinder Head Chambering Service (For EJ25 block conversion)

• Breather Port Conversion Kit (For EJ25 block conversion)

• Porting and Polishing Services

• Oversized Head Stud Machining and Gasket Fitment

• CNC'd or Hand Polished OEM or Aftermarket TGV Delete Service (off road use only and Race Vehicles)

• AVCS Cam Gear Rebuilding and Strengthening Service (Including Exhaust Gears for the 2008-2018 STI's!)

• Cylinder 4 Cooling Passage Upgrade

• Fully Balanced Rotating Assembly (Including External Items)

• Stock Turbocharger Rebuilds or Upgrades

• VF Turbo Porting Service (To prevent boost creep)

• Stainless Steel Oil Lines (Turbo and Power Steering)

• Timing Guide and Cover Conversion Kits (For A/T WRX EJ25)

• Oil Pump Upgrade Options

• Oil pan, Pickup, and Windage tray options