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IAG 800 FA20 DIT Long Block Engine w/ IAG 800 Heads (800BHP) - Subaru WRX 2015-2021
Lease for as low as $/week
IAG 800 FA20F DIT TIMED LONG BLOCK
FOR 2015-2021 WRX
A "DROP-IN" SOLUTION
The IAG Performance Hand-Built 800 Subaru FA20F (DIT) is a great choice for those looking to get more out of their modified WRX. Each Long Block Package is a complete, valve cover to valve cover, timed, crate engine. These engines offer significant ease of installation for customers seeking a complete "drop-in" engine package for their 2015+ Subaru WRX. The Long Blocks feature a combination of our proven IAG Performance Short Block and Cylinder Head packages, along with other race-proven components to complete the assembly. When paired with our Long Block Installation Packages, you have a true plug-and-play solution to get you back on the road, FAST! All components included are BRAND NEW and there is NEVER A CORE CHARGE required.
SOLD COMPLETE, TIMED
& READY TO INSTALL
Every IAG 800 FA20 Long Block is sold complete and ready to install. Since their introduction to the WRX lineup in 2015, the FA20F has proven to be one of the more difficult Subaru engines to work on, especially for those who are inexperienced with the platform. The timing system on these engines is complicated. One wrong move can leave you needing a new set of valves. In building the IAG Long Block line we set out to make installation as easy as possible. To that end, we have decided to only offer the FA20 long blocks with all new timing components pre-installed. This means all your mechanic needs to do is swap over the manifolds, sensors, injectors, and external accessories to get you back on the road ASAP. Most installations can be completed in a day.
BUILT WITH 100% NEW COMPONENTS
IAG 800 FA20F (DIT) SHORT BLOCK
The IAG 800 Long Block Package is ideal for clients looking for an engine to support up to 800 BHP applications. The IAG 800 FA20F (DIT) long block features our highly popular IAG 800 FA20F (DIT) WRX Short Block.
The IAG 800 short block starts with new Subaru FA 2.0L 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. The case halves are then CNC machined with O-ring receiver grooves around the bore surface as well as drilled and tapped to accept 1/2" head studs that greatly reduce head gasket failure during high cylinder pressure scenarios. Next, the short block is Deck Plate bored and honed that to 86.1mm on our in-house Sunnen SV-30 cylinder hone. 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 2020 Subaru 2.0L WRX crankshaft that is matched to ACL or King main bearings. IAG-Spec 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, IAG-Spec 86.1mm forged pistons are installed, along with an OEM oil plug finishing off the short block.
FORGED RODS
TO SUPPORT MORE TORQUE
It's no secret that the OEM connecting rods are the weak link when it comes to the FA20F engines. Any increases in low end torque can stress the OEM rods to the point of breaking. When a rod breaks it causes catastrophic damage inside the engine, sometimes even leaving big holes in the engine case. With this in mind, all of our FA20 short blocks feature upgraded rods. The IAG 800 FA20 DIT Long Block features IAG Spec H Beam connecting rods with ARP 2000 hardware, which are a significant upgrade from the OEM components. You can feel confident when increasing your horsepower and torque that the rods are designed to handle the stress.
FORGED PISTONS
DESIGNED FOR BOOST
Each Stage 2 FA20F DIT WRX Short Block features IAG Spec JE FSR 86.1mm Forged Pistons. These 2618 T6 Alloy high-strength pistons have been specifically designed to support increased cylinder pressures which come with more boost. FSR forgings reduce mass and wear caused by friction without sacrificing strength. This is accomplished by using an asymmetrical skirt design instead of the traditional full-round skirt, also this reduces weight significantly. Featuring smooth flowing radii on the domes and dishes, the design promotes excellent flame travel. The pistons are secured to the rods with .866" x 2.250" x .230" wall 9310 nickel carbon steel wrist pins with Tru Arc locks.
CLOSED DECK FOR EXTRA STRENGTH
Our unique closed deck system significantly increases the strength of the OEM case halves. This process supports the cylinder walls at the top of the case in order to prevent flexing and possible cracking where the case bolt reliefs are cut into the back of the cylinder wall.
During the installation process we machine the assembled case halves in our Haas VF-4SS CNC mill to accept the IAG Closed Deck inserts. Once the case has been machined we heat it in an oven while freezing the specially machined inserts with liquid nitrogen. The inserts are then pressed into place and then machined to a mirror finish. To ensure proper head gasket sealing for high boost an o-ring groove is added to the deck and a copper wire is installed.
The unique inserts feature small passages that allow needed coolant flow to the deck surface. This means that the closed deck system does not affect the block's cooling ability and will not cause overheating, even in daily drivers.
IAG 800 FA20F (DIT) CYLINDER HEAD PACKAGE
Each IAG 800 FA20 DIT Cylinder Head Set starts with new OEM castings from Subaru of America. For these long blocks we've also included Kelford "A" camshafts as well as new OEM cam towers, rockers, pivots, and valve shim caps.
The bare castings are visually inspected and the OEM guides are pressed out. The heads are then fixtured into our in-house Centroid 5-axis CNC Machine, one of the most advanced precision engine machining equipment in the world. The Centroid CNC performs a "pocket port" of the area under the valves, enlarging and blending the opening under the valves. The benefit of CNC porting is not only an efficient way of machining the heads it also offers consistent port results that are hard to achieve by hand. Once the Centroid completes the porting process the heads are drilled to fit larger 1/2" or 14mm head studs which are commonly used in high horsepower builds. Next, the OEM press-fit freeze plugs are removed, to avoid a common known failure in which they loosen and leak coolant into the engine oil as well as externally. To eliminate this problem each head is tapped and threaded plugs are installed. At this point, GSC Manganese-Bronze valve guides that are shaped to improve airflow are pressed into place then all the new intake and exhaust guides are diamond-honed in our honing station. The heads are then fixtured in our Newen Valve Guide and Seat Machine to cut all intake and exhaust seats with a multi-angle valve job that suits the flow characteristics of GSC's +1mm valves. The heads decks are then resurfaced using our TS-3000 BlockMate that cuts the aluminum to a smooth even finish. To remove debris and oils from the machining process, the heads are ultrasonically cleaned. Finally, the heads are reassembled using Kelford Dual Cylindrical Valve Springs and Retainers along with GSC Viton stem seals.
The IAG 800 FA20 WRX Head Package also features Kelford's new 272-A Camshafts, which are proven to add a significant bump in power across the rev range without sacrificing driveability. The cams are installed in the upper cam tower assembly and attached to the lower portion of the head casting. Valve lash is carefully measured and set at this time using new, OEM shims for proper clearance. New OEM valve covers are added for a complete valve cover-to-valve cover assembled long block. Once assembled, we add new OEM timing components and a Subaru FA20 timing chain cover with built-in oil pump.
IAG 800 Timed Long Block Engine Includes:
IAG 800 FA20 2.0L Short Block Includes:
- Case Halves -Brand new OEM Subaru FA20 case halves, bored and honed to 86.1mm
- Case Machining - Modified for improved oiling
- Case Machining - Bored and honed to 86.1mm
- O-Ringing - Machine and O-Ring Deck Surface
- Head Studs - Machine Case for 1/2" head studs - *Head studs are sold separately
- Pistons -IAG-Spec 86.1mm Forged Pistons, Ring Set, and .230" x 2.250" 9310 Nickel Carbon Steel Wrist Pins.
- Connecting Rods -IAG-Spec H-Beam / ARP2000 Rod Bolts
- Rod -ACL or King XPG
- Main Bearings -ACL or King XPG
- Crankshaft -New Subaru FA20 DIT WRX crankshaft
- Case / Main Bolts -Standard Subaru case bolts
- Hardware - OEM Oil Plug - comes preinstalled at the oil pan location
Compression Ratio:
- 10.5:1 compression on standard gasket thickness.
IAG 800 CNC Pocket Ported FA20 DIT Cylinder Heads Package Includes:
- (x2) Brand New Subaru OEM AW20 FA20 WRX DIT Cylinder Head Castings
- (x8) GSC 35mm (+1mm) Intake Valves
- (x8) GSC 30mm (+1mm) Exhaust Valves
- (x16) Kelford Dual Cylindrical Valve Springs & Retainers
- (x16) GSC Manganese-Bronze Valve Guides
- (x16) GSC Valve Stem Seals
- IAG Performance CNC Pocket Porting
- Multi-Angle Valve Job
- Drilling for compatibility with ½" or 14mm Head Studs
- Threaded Coolant Plug Upgrade
- Resurface
- Ultrasonic Cleaning
- Kelford "A" 272 Camshafts
- (x2) OEM Cam Towers & Hardware
- (x16) OEM Rocker Pivots
- (x16) OEM Lifters
- (x16) OEM Valve Lash Caps
- Valve Lash Service
Gaskets, Hardware & Accessories:
- Head Studs - ARP 2000 1/2" Set
- Head Gaskets - OEM
- Valve Cover Gaskets - OEM
- Valve Covers - OEM
- Timing Components - OEM
- Oil Pump/Timing Cover - OEM
- Rear Main Seal & Separator Kit
- Crankshaft Woodruff Key
Power: The IAG 800 Short Block has a power output rating of 800 BHP
Long Block Installation Kit:
The optional IAG Long Block Installation Kit provides all of the basic components needed to install one of our FA20F Long Block Engine Packages in one complete kit. This kit includes all of the gaskets and seals required to install the timed long block. The kit also includes a new water pump and thermostat, spark plugs, oil pan, pickup, and crank bolt. All fluids for initial break-in are included.
During installation your mechanic will need to swap over the external components from your engine such as the intake and exhaust manifolds, turbocharger, fuel pump, injectors, scavenge pump, etc.
Injector Kit Options:
When installing your new IAG FA20F Timed Long Block your mechanic will need to reinstall your injectors. If you engine experienced a previous failure we recommend replacing your fuel injectors with new OEM injectors. This kit provides a set of 4 new Subaru OEM fuel injectors which come with the direct injection seals preinstalled. The kit also includes new spring clips to secure the injectors.
If reusing your original injectors it is important to replace the injector seals during installation. Our injector seal kit includes all new seals and clips for your original injectors. (Note that a special tool is required for installation of the new seal kit and is not included)
Installation Instructions:
Please review the PDF document below regarding installation, break-in procedures and warranty information.
PDF After Sale Document - Contains Shipping, Engine Care and Warranty Information
Quality Guaranteed
Available 24 Month/24,000 Mile Warranty*
IAG stands behind every hand-built engine they produce. IAG's Standard Short Block Workmanship Warranty covers your short block for 12 months or 12,000 miles. They have also teamed up with a selection of IAG Certified Installation Facilities which offer up to a 24 month/24,000 mile workmanship warranty when the engine is purchased, installed, and tuned by that IAG Certified Installer.
Returns may be accepted within 14 days of purchase pending Return Merchandise Authorization (RMA). No returns or cancellations on special order items. All returns will be charged a 20% restocking fee, no exceptions.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. Item must be able to be resold as new.
Several types of goods are exempt from being returned. Hazardous materials, fluids, greases, chemicals, and clothing are not able to return.
Free shipping is available within the lower 48 states for most orders totaling $199 or more. A free shipping option will be available during checkout. This offer is for delivery address in the continental United States and excludes shipments going to Alaska, Hawaii, Military Boxes, and items that require freight shipping.
Processing Time
Patterson Performance stocks a large quantity of items at any given time. Some items may require drop shipping from one of our various distributors. In stock items will ship within 1-2 business days. If you're needing your product quickly, please contact us to verify product availability before placing your order. Orders requiring additional verification (security concerns, incorrect information, etc.) may need additional processing time. Estimated shipping dates are not guaranteed and are subject to change based on inventory levels and manufacturer lead times. Backordered items are shipped immediately once available.
Items ship daily, If the item you ordered is not in stock, a member of our team will contact you via email / phone.
Patterson Performance will only ship to an address that varies from your billing address if payment is made via Paypal or a financing partner.
Patterson Performance ships from multiple warehouses throughout the United States, and sometimes from manufacturers overseas.
You can simply contact us via email / telephone for a live inventory check
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