SKU: IAG-ENG-1270

IAG Performance Stage 2.6 Trojan EJ25 Subaru Closed Deck Short Block for (WRX/STi/LGT/FXT)

IAG

$8,769.95


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Description

item: IAG Performance Stage 2.6 Trojan EJ25 Subaru Closed Deck Short Block (WRX/STi/LGT/FXT)

Description

The IAG Stage 2.5 Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together in our Haas VF-4SS CNC mill to accept the IAG CLOSED Deck Inserts that transform the block into a solid deck. The

The IAG Stage 2.6 Trojan Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together in our Haas VF-4SS CNC mill to accept the IAG CLOSED Deck Inserts that transform the block into a solid deck. The unique inserts feature small passages that allow needed coolant flow to the deck surface. The case halves are then CNC machined with O-ring receiver grooves around the bore surface as well as drilled and tapped to accept 1/2" head studs that greatly reduce head gasket failure during high cylinder pressure scenarios. Next, the short block is Deck Plate bored and honed to 99.75mm in our in-house Sunnen SV-30 the most advanced automotive cylinder hone available. IAG‘s in-house honing process is able to set custom piston to wall clearances to best fit your needs.

The modified case halves are then assembled using a new 2017+ Subaru 2.5L nitride treated STI crankshaft that is matched to ACL or King race main bearings. IAG-Spec Tuff H-Beam connecting rods and ARP 625+ rod bolts are utilized along with ACL or King race rod bearings. The case halves are sealed with new OEM main/case bolts and sealant. Finally, IAG-Spec 99.75mm JE FSR 2618 Forged Pistons and electroless nickel plated tops and ring area as well as upgraded .250" / .906" H13 wrist pins are added to finish the Stage 2.6 Trojan short block. Additionally, all IAG-Spec piston skirts utilize the JE Perfect Skirt coating.

Stage 2.6 Trojan Closed Deck Includes:

  • Case Halves - Converted to Closed Deck using brand new Subaru OEM case halves, bored and honed to 99.75mm.
  • O-Ringing - Machine and O-Ring Deck Surface
  • Head Studs - Machine Case to 1/2" head studs - *Head studs are required and sold separately
  • Pistons - IAG-Spec JE FSR 99.75mm 2618 Forged Pistons, Electroless Nickel Plated Tops & Ring area, Ring Set, .250" / .906" H13 Wrist Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pins)
  • Connecting Rods - IAG-Spec Tuff H-Beam / ARP 625+ Rod Bolts.
  • Rod / Main Bearings - ACL or King Race bearings.
  • Crankshaft - Standard New Subaru Nitride Treated 2017+ STI Crankshaft.
  • Case / Main Bolts – Standard FHI Subaru case bolts.

Power:

  • The IAG Stage 2.6 Trojan Short Block has a power output rating of 750BHP.

Compression Ratio:

  • 8.5:1 on D Cylinder Heads (EJ255)
  • 8.2:1 on B, V and W EJ257 Heads with standard thickness gasket.

Head Gasket Recommendations:

  • IAG Recommends JE Pro Seal .039 inch head gaskets (Sold Separately)

Additional Options Available:

  • Head Studs - IAG 1/2" ARP Head Stud Set (Sold Separately)
  • Oil Pump - Subaru JDM 12mm High Volume Oil Pump or 11mm Subaru Oil Pump (Sold Separately)
  • Head Gaskets - JE Pro Seal .039 inch Head Gaskets (Sold Separately)
  • Hardware/Seals - OEM cover and seal kit (Sold Separately)

Not planning on reusing your original short block service plugs and covers? IAG offers a simple comprehensive cover and seal kit that includes:

  • (1) Rear main seal
  • (3) OEM wrist pin plugs
  • (3) OEM wrist pin plug washers
  • (1) OEM separator cover
  • (6) OEM separator cover bolts
  • (1) OEM wrist pin service cover
  • (1) OEM wrist pin service cover O-ring
  • (2) OEM wrist pin service cover screws.

If you are reusing your original wrist pin service plugs and covers always replace the following components before installing a short block to avoid potential leaks:

  • (3) OEM wrist pin plug washers
  • (1) wrist pin service cover O-ring

Never reuse a rear main seal on a new short block.

Note: All IAG Short Blocks are balanced and blueprinted.

Please review the PDF document below regarding installation, break-in procedures and warranty information.

compatibility

Note: Additional modification required for EJ20 heads. Please consult engine builder if using EJ20 heads to account for correct valve clearance and compression

  • 2001-2014 Subaru WRX
  • 2002-2020 Subaru STI
  • 2004-2009 Subaru Liberty GT
  • 2003-2013 Subaru Forester XT

Specifications

SKU IAG-ENG-1270
Brand IAG
Shipping Weight 40.0000kg
Shipping Width 0.800m
Shipping Height 0.200m
Shipping Length 0.800m

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