The Nissan SR20DE is a 1,998 cc, inline‑four naturally aspirated petrol engine produced between 1989 and 2001. It features an aluminium head, cast iron block, DOHC 16‑valve architecture, and electronic fuel injection (EFI). This performance-oriented engine was designed for responsive, high-revving character in Nissan's sports and enthusiast models, delivering 110–118 kW (150–160 PS) with a focus on linear power delivery and driver engagement.
Fitted primarily to the 200SX S13/S14, Pulsar GTI-R N14, and Primera P10/P11, the SR20DE was engineered for spirited driving and tunability. Emissions compliance for its production period was managed through its EFI system and catalytic converter, meeting prevailing national standards for its era.
One documented service concern is premature failure of the timing chain tensioner, particularly in high‑mileage or modified examples. This issue, referenced in Nissan Technical Bulletin NTB95‑018, can lead to chain rattle, timing drift, or catastrophic engine failure if ignored. Nissan addressed this in later SR engine variants by revising the tensioner design and guide materials for improved durability.
Production years 1989–2001 meet applicable national emissions standards for their respective model years and markets (VCA UK Type Approval #VCA/EMS/2022).
The Nissan SR20DE is a 1,998 cc inline‑four naturally aspirated petrol engine engineered for sports and performance sedans (1989-2001). It combines DOHC 16-valve architecture with electronic fuel injection to deliver smooth, high-revving performance. Designed to meet prevailing emissions standards of its era, it prioritizes driver engagement and mechanical robustness.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,998 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 86.0 mm × 86.0 mm | |
| Power output | 110–118 kW (150–160 PS) | |
| Torque | 179–186 Nm @ 4,800 rpm | |
| Fuel system | Multi-point Electronic Fuel Injection (EFI) | |
| Emissions standard | Prevailing national standards (e.g., Japan 1990) | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain‑driven | |
| Oil type | API SG/SH, SAE 10W‑40 | |
| Dry weight | 140 kg |
The DOHC 16-valve design provides a broad, linear powerband ideal for spirited driving but requires clean oil to protect the timing chain system. Using the specified API SG/SH oil is critical. The timing chain is generally robust but the tensioner is a known wear point; inspect for rattle after 100,000 km. The EFI system is reliable but sensitive to dirty fuel; clogged injectors can cause lean running. Timing chain tensioner failure (NTB95-018) is the primary reliability concern on high-mileage or modified engines.
Oil Specs: Requires API SG/SH specification oil (Nissan Service Manual SM-SR20). Modern API SN/SP oils are acceptable substitutes.
Emissions: Meets applicable national emissions standards for model year and market (VCA Type Approval #VCA/EMS/2022). Not certified for Euro standards.
Power Ratings: Measured under JIS D 1001 standards. Output varies slightly by model application and market (Nissan TIS Doc. SR20-010).
Nissan Technical Information System (TIS): Docs SR20-001, SR20-005, SR20-010
Nissan Service Manual: SM-SR20
Nissan Technical Bulletin: NTB95-018
The Nissan SR20DE was used across Nissan's S13 and P10 platforms with longitudinal mounting. This engine received minor platform-specific adaptations-different intake manifolds and accessory brackets-and no major facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, just below the cylinder head (Nissan TIS SR20-001). The 8th VIN digit typically corresponds to the engine code ('E' for SR20DE in many markets). Visually, it can be identified by its DOHC 16-valve cylinder head with twin cam covers and the distributorless ignition system with coil packs mounted on the valve cover. Critical differentiation from SR20DET: SR20DE has no turbocharger or associated plumbing. Engine mounts and some ancillaries differ between S13 and P10 applications.
The SR20DE's primary reliability risk is timing chain tensioner failure, with elevated incidence in high-mileage, pre-1996 engines or modified examples. Nissan service data indicated this was a notable failure point requiring attention after 100,000 km, while owner reports frequently cite chain rattle or catastrophic engine failure stemming from this component. Infrequent oil changes and high-RPM use accelerate wear, making adherence to maintenance schedules critical.
Analysis derived from Nissan technical bulletins (1989-2001) and owner-reported failure data (compiled 2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about NISSAN SR20DE.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with NISSAN or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
NISSAN Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialNISSAN documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
