IAG 1150 High Compression 2.5L Subaru Closed Deck Short Block For WRX, STI, LGT, FXT - 1150 BHP

IAG 1150 Closed Deck EJ25 Short Block Includes:

• Case Halves -Converted to Closed Deck from brand new OEM Subaru case halves, bored and honed to 99.75mm.
• Pinned Mains -Machine case for 9.5mm pinned mains and lined honed.
• Fire-Lock -IAG Fire-Lock™ receiver groove machining, latest solution to prevent head gasket failure on high horsepower and high boost Subaru's - *IAG Fire-Lock™ head gaskets required
• Head Studs -Machined for 14mm Head Studs
• Pistons -IAG-Spec JE FSR 99.75mm 2618 Forged Pistons, Electroless Nickel Plated Tops & Ring area, Ring Set, .250" wall / .927" diameter H13 Wrist Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pins)
• Connecting Rods -IAG-Spec +2mm Tri-Beam Connecting Rods with ARP 625+ Rod Bolts.
• Rod / Main Bearings -ACL or King Race Bearings.
• Crank -IAG-Spec Billet Crank
• Case / Main Bolts -ARP Main Bolts.

Compression Ratio:

• 9.9:1 on D Cylinder Heads (EJ255)
• 9.5:1 on B, V and W EJ257 Heads

Head Gasket Required:

• *IAG Fire-Lock™ .051" Head Gaskets with IAG-Spec Alloy Ring Set* PN# IAG-ENG-1741