IAG Performance IAG-ENG-1256 Stage 2.5 FA20 Subaru Closed Deck Short Block (10.5:1 Compression Ratio)

IAG Stage 2.5 FA20 Closed Deck Short Block The IAG Stage 2.5 short block starts with new Subaru FA 2.0L BRZ engine case halves that are machined for improved oiling. Then 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 that to 86.25mm 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 modified case halves are then measured and assembled using a new FA20 WRX / BRZ Subaru crankshaft that is matched to King main bearings. Brian Crower H-Beam rods with ARP2000 rod bolts are utilized along with King or ACL rod bearings. The case halves are sealed with new OEM case bolts and sealant. Finally, lower compression IAG-Spec 86.25mm 10.5:1 compression ratio forged pistons are spec'd and installed along with an OEM oil plug finishing off the short block. The lower compression ratio is good for BRZ / FR-S forced induction conversion applications.

This Part Fits:

Year	Make	Model	Submodel	Notes
2013	Scion	FR-S
2014	Scion	FR-S
2015	Scion	FR-S
2016	Scion	FR-S
2013	Subaru	BRZ
2014	Subaru	BRZ
2015	Subaru	BRZ
2016	Subaru	BRZ
2017	Subaru	BRZ
2018	Subaru	BRZ
2019	Subaru	BRZ
2020	Subaru	BRZ
2017	Toyota	86
2018	Toyota	86
2019	Toyota	86
2020	Toyota	86