HKS Step 3 FA20 2.2L Complete Engine for Scion FR-S / ZC6 Subaru BRZ / ZN6 Toyota 86
“HKS COMPLETE ENGINE POWERED BY HKS” exemplifies the extensive application of advanced technology and crafted skills accumulated over more than forty years. This expertise originates from HKS’s participation in Gr. A, Drag race, D1 GP, and TSUKUBA Time Attack motorsport competitions. The aspiration of the company is to design high-performance racing engines with enhanced power and longevity. These engines are manufactured in the same facilities where previously constructed race engines were designed, always capitalizing on the accumulated knowledge and technology from past racing incidents. They keep a keen eye on the distinct features of a genuine racing auto and a modified streetcar.
Emphasizing several years of race engine design experience, the “HKS COMPLETE ENGINE POWERED BY HKS” utilizes this profound understanding to maintain its supremacy. To improve reliability, HKS uses newly fabricated cylinder blocks, recognizing that salvaged blocks might have hidden minor damages. This tactful option of new cylinder blocks proclaims HKS’s dedication to precision engine production. Adhering to thorough deburring and chamfering practices ensures precision, as the associated components are also deburred for easy integration of the head or auxiliary apparatus, thereby increasing labor efficiency. A thorough three-level cleaning scheme removes residual metal fragments, boosting precision and averting possible engine complications.
Before cleansing, the engine’s blind caps are removed. The engine is then initially cleaned, steam-cleaned, and polished for final touch-up. The boring process is meticulously controlled, with possible distortions from the dummy head and metal taken into account. This precaution is implemented using particular head bolt and gasket components. Every single step confirms the production of highly precise engines. The use of honing and cross-hatching techniques are influenced by prior race engine designs. Clearances in each section are fine-tuned based on the expected engine output. Care is taken to select pistons and conrods from the cylinder with perfect alignment, using high-precision equipment to regulate the torque fastening and high-performance angle. HKS’s commitment to quality stands undeterred while operating in an ideal environment.
Features
- Engine build with forced induction in mind
- Oil jets were added for piston cooling
- 0.5 oversize bore to improve cylinder accuracy (adopts special low compression piston to match it)
- ARP strengthened main bolts
- Forged crankshaft
- ACL connecting rod bearings
- Grommet gasket for improved combustion chamber sealing
- High angle camshafts to boost high end performance
- Strengthened close block
- Billet I-beam connecting rods
- Oversize head bolts
- Beryllium-free copper valve seat and phosphor bronze guides to improve heat dissipation
- Hand ported and polished intake and exhaust ports
- Welded water jacket holes and strengthened engine head
Specifications
- Bore
- Stock: 86.0mm
- HKS: 86.5mm
- Stroke
- Stock: 86.0mm
- HKS: 90.0mm
- Compression (t=0.84)
- Displacement
- Stock: 1998cc
- HKS: 2116cc
Step 3 Complete Engine Specifications
- Engine Head Modifications: beryllium-free copper valve seat + phosphor bronze guides, ported and polished intake / exhaust, welded water jacket holes, polished combustion chamber
- Engine Block Modifications: closed deck, added oil jets, 0.5 oversize boring, polished deck surface
- Main Bolts: strengthened ARP
- Oil Jets: one for each cylinder
- Piston: HKS forged low comp 0.5 (oversize piston)
- Conrod: HKS billet I-beam conrod
- Crankshaft: HKS forged
- Main Bearing: stock + WPC
- Conrod Bearing: ACL
- Head Stud: strengthened ARP 1/2″
- Head Gasket: grommet type (t=0.84)
- Camshaft: IN 260° / EX 266°
Applications
- 2013-2016 Scion FR-S: 2.0L F4 FA20
- 2013-2020 Subaru BRZ: ZC6 | 2.0L F4 FA20
- 2013-2020 Toyota 86: ZN6 | 2.0L F4 FA20
About HKS
HKS Co., Ltd. is a highly renowned Japanese automotive tuning and performance company. Founded in 1973 by Hiroyuki Hasegawa and Goichi Kitagawa, the company’s initials HKS are also derived from the name of its third partner, Sigma Automotive. With a reputation built on high-quality performance parts, HKS specializes in aftermarket components for a wide array of vehicles. The company has played a significant role in popularizing automotive tuning culture around the world. HKS is known for producing various performance-enhancing parts including turbochargers, exhaust systems, suspension components, and engine parts. Their products are engineered to provide maximum performance gains without sacrificing reliability or drivability.
Over the decades, HKS has expanded its reach by participating in various motorsport events, ranging from drag racing to drift competitions and circuit racing. Their expertise in tuning and enhancing vehicles has led them to significant successes in different motorsport arenas. The commitment to research, development, and innovation has cemented HKS’s place as a leader in the automotive aftermarket industry. By maintaining rigorous quality control and focusing on the precise engineering of performance products, HKS has established strong relationships with automobile manufacturers, dealers, and enthusiasts worldwide. Sustainability and environmental considerations are also part of HKS’s commitment. They continue to innovate in ways that enhance performance while considering environmental impact. With a rich history and an unrelenting passion for pushing automotive performance to its limits, HKS continues to be a sought-after brand for automotive enthusiasts seeking top-tier performance upgrades and tuning solutions.
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