The Nissan Z24i is a 2,389 cc, inline‑four naturally aspirated petrol engine produced between 1985 and 1990. It features a cast iron block, aluminium head, and a single overhead camshaft (SOHC) with 8 valves, representing an evolution of the carbureted Z24 with throttle — body fuel injection. Output was standardized at approximately 86 kW (117 PS) and 194 Nm of torque, prioritising low — RPM torque and drivability for utility vehicles.
Fitted primarily to the D21 Hardbody…
Production years 1985–1990 meet pre-Euro standards (VCA UK Type Approval data for relevant chassis codes).
The Nissan Z24i is a 2,389 cc inline‑four naturally aspirated petrol engineered for pickup trucks and vans (1985-1990). It combines throttle-body fuel injection with a robust SOHC valvetrain to deliver strong low‑end torque and renowned simplicity. Designed for pre-Euro compliance, it prioritises mechanical durability and ease of service over peak efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,389 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 89.0 mm × 96.0 mm | |
Power output | 86 kW (117 PS) | |
Torque | 194 Nm @ 2,400 rpm | |
Fuel system | Throttle-body injection (TBI) | |
Emissions standard | Pre-Euro | |
Compression ratio | 8.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven SOHC | |
Oil type | API SF/SG or equivalent (SAE 10W-30) | |
Dry weight | Approx. 210 kg |
The Nissan Z24i was used across Nissan's D21/C22 platforms with longitudinal mounting. This engine received platform-specific adaptations-different accessory brackets in the Vanette versus the Hardbody-with no major running changes throughout its production life. All adaptations are documented in OEM technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
The Z24i's primary reliability risk is distributor drive gear wear, often linked to lubrication neglect or material fatigue. Nissan service data indicates this is a significant cause of ignition-related breakdowns for high-mileage engines, while its simple mechanical design generally ensures long service life with basic maintenance. Timing chain stretch and TBI sensor failures are secondary concerns.
Analysis derived from Nissan technical bulletins (1987-1990) and general workshop failure statistics. Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
Yes, the Z24i is generally very reliable long-term due to its simple, robust design. The main known issue is distributor gear wear, which is a fixable problem. With this addressed and regular oil changes, these engines are known for their durability and can easily reach high mileage.
The most common and significant issue is premature wear of the distributor drive gear, leading to ignition failure. Other common problems include timing chain stretch at very high mileage, failures of TBI sensors (TPS, coolant temp), and valve cover gasket leaks due to age.
The Z24i was used primarily in the D21 generation Navara/Hardbody pickup (1985-1990) and the Vanette (C22) van/truck. It was the fuel-injected option for these utility vehicles during its production run.
Significant power tuning is difficult due to its throttle-body injection and low-compression design. Minor gains can be had from intake/exhaust modifications or advancing ignition timing, but the realistic approach is an engine swap for more power. Most owners value its reliability and torque over peak power.
Fuel economy is modest. Expect around 11.0-13.0 L/100km (26-22 mpg UK) combined for a pickup truck, depending on load, terrain, and driving style. Its design prioritizes torque and durability over fuel efficiency.
No. The Nissan Z24i is a non-interference engine. If the timing chain were to fail, the pistons and valves will not collide, preventing catastrophic internal damage. This is a key factor in its reputation for durability.
The Z24i requires a petrol-rated oil, typically API SF or SG specification. A 10W-30 viscosity is commonly recommended for its operating conditions. Using the correct oil is vital for protecting the engine, especially the distributor drive gear.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
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.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
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.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.