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IAG Stage 2 Tuff EJ25 Short Block
The IAG Stage 2 Tuff short block starts with new Subaru 2.5L EJ25 engine case halves that are bored and honed to 99.75 on our in-house Sunnen SV-30 the most advanced automotive cylinder hone available. IAG's in-house honing process is able to set piston to wall clearances tighter for a quieter running engine. The short block is measured and assembled using a new 2017+ Subaru 2.5L nitride treated STI crankshaft that is matched to ACL or King race main bearings. Next, IAG-Spec Tuff H-Beam rods with ARP Rod Bolts are utilized to increase the power rating slightly at the expense of being slightly heavier. The connecting rods are matched to ACL or King race rod bearings. The case halves are sealed with new OEM main case bolts and sealant. Finally, IAG-Spec JE 99.75mm Forged Pistons are added to finish off the short block.
Stage 2 Tuff Short Block Includes
- Case Halves - Brand new Subaru OEM case halves, bored and honed to 99.75mm.
- Pistons - IAG-Spec JE 99.5mm Forged Pistons, Ring Set, .180" Chromoly Pins, Clips, (Perfect Skirt Coating and Offset Wrist Pin)
- Connecting Rods - IAG-Spec Tuff H-Beam / ARP2000 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.
Additional Options Available
- Hardware / Seals - OEM cover and seal kit - $105.99
- Oil Pump - Subaru JDM 12mm High Volume Oil Pump - $219 or 11mm Subaru Oil Pump - $199.95
Compression Ratio
- 8.5:1 on D Cylinder Heads (EJ255)
- 8.2:1 on B, V and W EJ257 Heads with standard thickness gasket.
Power: The IAG Stage 2 Tuff Short Block has a power output rating of 625BHP.
[ All IAG short blocks are balanced and blueprinted. ]
[ Build time for blocks are 2-3 weeks. During the holidays it can take longer. ]
$4,199.99
SKU
IAG-ENG-1213
IAG (Integrity Auto Group) was established in 2004, initially selling high quality used performance cars. Within a year and a half, IAG sold over 200 Subaru WRX / STI’s. Our clients began requesting us to provide performance products and services for their Subaru’s, which we quickly catered to. IAG extended these services and parts nationally by 2007. Fast forward to 2019, IAG Performance is known as a leader in the automotive performance industry (specifically Subaru) and carries an impeccable reputation among our clients and peers.
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.
| SKU | IAG-ENG-1213 |
|---|---|
| Brand | IAG Performance |
| Product Type | Engine |
| Engine | Shortblocks |