Engine Building

enginesmainSometimes Subaru engines fail. Left unmodified and maintained properly, the Subaru engine will last a very long time. There are many reasons for engine failures. One reason many people don’t consider is taking the engine beyond it’s intended power level. It is not uncommon for Subaru owners to double the power of their engines through easy modifications. Modifying the engine’s power without building the block is dooming the engine to failure. If you are reading this, it is may be too late. That’s ok, UberSport can help.

Listed below are some options you have when rebuilding your Subaru engine. 2.0 liter powered WRX owners may wonder why we don’t list the 2.5 shortblock swap. After doing quite a few of them, we have decided it is a bad idea. While they do make lots of torque, they fail at the top end of the power band. While it is possible to add lower compression pistons or thick head gaskets to help prevent detonation issues, it does not solve the other issue. The combustion chamber of the head is designed for a smaller cylinder. Without serious headwork, this combination will fall short of the expected benefits of the increase in displacement.

engine01There is a solution to the 2.0 liter blues. Stroke it! Unless your engine looks like the one in the photo below, your 2.0 liter can be rebuilt using superior parts to stock, for a long lasting high horsepower engine. When rebuilding engines, UberSport always over bores the block for new forged pistons. To stroke the 2.0 liter engine, custom pistons and a new STi crankshaft are used. A wise and fairly inexpensive addition to the stroker engine, are a set of forged rods. All UberSport built engines use ACL Race Bearings for better oil flow and bearing life. Head rebuilding includes a 3 angle valve job for better airflow through the head. ARP head studs and UberSport custom specification head gaskets ensure there will be no future head gasket failures.

2.0 WRX Engine Rebuild

  • All installation labor included
  • Oversized Mahle 8.5:1 compression forged pistons
  • ACL Race Bearings
  • ARP Head Studs
  • UberSport spec head gaskets
  • Subaru 08 STi high flow oil pump
  • Subaru water pump
  • Gates Racing timing belt
  • Subaru timing belt tensioner
  • 3 angle valve job/head rebuild
  • NGK spark plugs
  • fluids
  • Forged rods option
  • Customers are reporting 28 mpg with this engine

2.2 Stroker WRX engine rebuild

  • All installation labor included
  • Oversized Mahle stroker kit forged pistons
  • Subaru STi 2.5 crankshaft
  • ACL Race Bearings
  • Subaru 08 STi high flow oil pump
  • Gates Racing Teflon timing belt
  • Subaru water pump
  • Gates Racing timing belt
  • Subaru timing belt tensioner
  • 3 angle valve job/head rebuild
  • NGK iridium spark plugs
  • fluids
  • 26 mpg average, stage 2 engine sees 270+ wtq

2.5 STi engine rebuild

  • All installation labor included
  • Oversized Mahle forged pistons
  • ACL Race Bearings
  • Subaru 08 STi high flow oil pump
  • Gates Racing Teflon timing belt
  • Subaru water pump
  • Subaru timing belt tensioner
  • 3 angle valve job/head rebuild
  • NGK iridium spark plugs
  • fluids
  • Forged rods option