IAG Stage 2.5 EJ25 Subaru Closed Deck Short Block For WRX, STI, LGT, FXT

IAG Stage 2.5 Closed Deck EJ25 2.5L Subaru Short Block for WRX, STI, Forester XT and Legacy GT.
IAG Stage 2.5 Closed Deck Subaru EJ25 Short Block


 
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MSRP: $4,199.99
Our Price: $3,999.99
Savings: $200.00

Availability: Usually Ships in 3 to 4 Weeks
Part#: IAG-ENG-1250


Pistons*:
Manley 99.75mm Platinum
Cosworth 99.75mm [Add $300.00]

Wrist Pins*:
Standard .170" Pins
Extreme .210" Pins [Add $100.00]
Not Required, Using Cosworth Pistons

Rod Bolts*:
Standard ARP2000 Rod Bolts
625+ ARP Rod Bolts [Add $200.00]

Head Gaskets*:
JE Pro Seal Gaskets - 1 Pair PN# SB1001-039 [Add $96.00]
Cosworth Gaskets - 1 Pair PN# 20010707 [Add $158.00]
Not Required

Oil Pump*:
ACL / Orbit Oil Pump Part# OPSB1478HP [Add $249.00]
Subaru 11mm Oil Pump Part# 15010AA360 [Add $194.95]
Not Required

Seal Kit*:
Wrist Pin / Cover Seals P# IAG-ENG-1720 [Add $99.99]
Not Required

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Description Applications
 
IAG Stage 2.5 Subaru EJ25 Closed Deck Short Block

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 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-10. 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 2012+ Subaru 2.5L heat-treated STI crankshaft that is matched to ACL or King race main bearings. Manley H Tuff 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, your choice of Manley Spec 99.75mm Platinum Forged Pistons or Cosworth 99.75mm Forged Pistons to finish the Stage 2.5 short block.

Stage 2.5 Closed Deck Includes:
  • Case Halves - Converted to Closed Deck using brand new Subaru OEM case halves, bored and honed to 99.75mm.
  • Pistons - Manley 99.75mm Platinum Forged Pistons / .170 inch wall tool steel wrist pins
  • Connecting Rods - Manley H Tuff / ARP2000 Rod Bolts.
  • Rod / Main Bearings - ACL or King Race bearings.
  • Crankshaft - Standard New Subaru Heat-Treated 2012+ STI Crankshaft.
  • Case / Main Bolts – Standard FHI Subaru case bolts.

Additional Options Available:
  • Pistons - Cosworth 99.75mm Forged Pistons - $300
  • Oil Pump - ACL Orbit High Volume Oil Pump - $249 or 11mm Subaru Oil Pump - $194.95
  • Rod Bolts- 625+ ARP rod bolts - $200
  • Wrist Pins - Upgrade to Extreme .210 inch 9310 thick-wall wrist pins - $100
  • Head Gaskets - JE Pro Seal .039 inch Head Gaskets - $96 or Cosworth 1.1mm Head Gaskets- $158
  • Hardware / Seal Option - $99.99 (Wrist pin plugs, washers, separator cover, bolts, etc. In case you don’t want to transfer from the original engine).

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 for B and D casting cylinder heads.
  • *IAG Recommends Cosworth 1.1mm head gaskets for all V and W casting cylinder heads.


The IAG Stage 2.5 Short Block has power output rating of 700BHP.

*All IAG short blocks are balanced and blueprinted.



Hardware / Seal Option:

Subaru EJ25 Seal Kit
Not planning on reusing your original short block service plugs and covers? IAG offers a simple comprehensive cover and seal kit that includes the (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 and (2) OEM wrist pin service cover screws. *If you are reusing your original wrist pin service plugs and covers always replace the (3) OEM wrist pin plug washers and (1) wrist pin service cover O-ring before installing a short block to avoid potential leaks.



PDF After Sale Document - Contains Shipping, Engine Care and Warranty Information


Average Rating: 5 of 5 Total Reviews: 1 Write a review »


  0 of 0 people found the following review helpful:
 
Staged short block March 9, 2016
Reviewer: fritz theodore from Danbury, CT United States  
Haven't installed it yet but love the shipment method
Pelican and love the assistance from the IAG gang.

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