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IAG Performance Subaru Engine Case Half O-Ringing Service
One of the best ways to improve a Subaru’s head gasket sealing properties in high boost applications is to add an o-ring around the case half bores. The o-ring sits above the deck surface and when utilized with the correct gasket and upgraded head studs, creates a strong seal around the combustion chamber. IAG’s o-ringing service utilizes your supplied EJ25 and EJ20 case which is inspected and then decked (New cases and closed deck converted cases are available separately). Finally the case is fixtured into our Haas VF-4SS CNC machine where a small groove is cut around each bore in which a copper wire can be placed once the short block is assembled.
O-ring groove cutting
(x4) Copper O-Ring Wires
Service does not include cleaning of case halves or install of o-ring wire into the bare case.
IAG Performance Resurface Subaru Engine Case Halves Service
IAG Performance 100mm or Larger Bore & Hone Subaru Engine Service
IAG Performance Subaru Valve Guide Replacement Service (1 Pair of Heads)
IAG Performance Cylinder Head CNC Service to Accept 1/2" or 14mm Head Studs
IAG Performance Subaru EJ25 CNC Cylinder Head Porting Service (1 Pair of Heads)
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1203 Baltimore Blvd.
Westminster, MD 21157
Integrity Auto Group Inc.