IAG Performance Stage 2.5 International Hybrid EJ25 Subaru Closed Deck Short Block For EJ20 Heads (IAG-ENG-S750IH)

Stage 2.5 International Hybrid EJ25 Subaru Closed Deck Short Block For Use w/ EJ20 Heads by IAG

The Hybrid EJ25 Short Block is designed for enthusiasts that want to increase the displacement and low end torque of their vehicle that originally was equipped with the EJ20 2.0L engine. The Hybrid 2.5L features pistons that are designed to lower compression and match the EJ20 cylinder heads without the need for cylinder head chamber modification.

Each IAG Stage 2.5L Hybrid 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. 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 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 (upgrading to ARP mains requires line honing). Finally, IAG-Spec 99.75mm JE FSR 2618 Forged Pistons with .210" Steel Wrist Pins are added to finish the Stage 2.5 short block.

Features

• Converted to Closed Deck using brand new Subaru OEM case halves, bored and honed to 99.75mm
• IAG-Spec JE FSR 99.75mm 2618 Forged Pistons, Ring Set, .210" Steel Wrist Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pins)
• IAG-Spec Tuff H-Beam / ARP2000 Rod Bolts
• ACL or King Race bearings
• Standard New Subaru Nitride Treated 2017+ STI Crankshaft
• Standard FHI Subaru case bolts

Benefits

Increased Performance Capabilities
• Improved Reliability

Please Note: Must be used with an EJ20 head.

Applications

• EJ20 Engines

What's In The Box?

• 1 - Complete IAG Short Block

References

• Installation Instructions, Warranty Info, and Break In Documentation

Warranty

• IAG offers a one year/12,000 mile warranty