The Nissan TB42E is a 4,169 cc, inline‑six naturally aspirated petrol engine produced between 1987 and 1997. It features an OHV, 12‑valve design with multi — point electronic fuel injection, prioritising low — end torque and mechanical simplicity for heavy — duty applications. Output is approximately 110 kW (150 PS) and 304 Nm, making it suitable for off — road and commercial use.
Fitted primarily to the Nissan Patrol (Y60) and Nissan Safari (Y60), the TB42E was engineered…
Production years 1987–1997 predate formal Euro standards; compliance based on national regulations of the era (VCA UK Type Approval records for period vehicles).
The Nissan TB42E is a 4,169 cc inline‑six naturally aspirated petrol engineered for SUVs and light commercial vehicles (1987-1997). It combines multi-point fuel injection with a simple OHV valvetrain to deliver strong, low-RPM pulling power. Designed for pre‑Euro regulatory environments, it prioritises mechanical simplicity and ruggedness over emissions refinement.
| Parameter | Value | Source |
|---|---|---|
Displacement | 4,169 cc | |
Fuel type | Petrol | |
Configuration | Inline‑6, OHV, 12‑valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 87.0 mm × 92.0 mm | |
Power output | 110 kW (150 PS) @ 4,400 rpm | |
Torque | 304 Nm @ 2,800 rpm | |
Fuel system | Multi-point electronic fuel injection (Nissan ECCS) | |
Emissions standard | Pre-Euro (National regulations) | |
Compression ratio | 8.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven | |
Oil type | API SF or SG (SAE 10W-30 or 20W-50) | |
Dry weight | Not specified in available OEM docs |
The Nissan TB42E was used across Nissan's Y60 platform with longitudinal mounting. This engine received no major platform-specific adaptations during its production, ensuring broad parts interchangeability. All specifications are documented in OEM technical bulletins.
The TB42E's primary reliability consideration is ignition system wear, with elevated incidence in high-mileage or poorly maintained units. Nissan workshop data indicates distributor cap and rotor replacement is a common service requirement, while owner reports frequently cite misfire-related performance issues. Adherence to maintenance schedules is critical for sustained operation.
Analysis derived from Nissan technical bulletins (1987-1997) and aggregated owner workshop reports. Repair procedures should follow manufacturer guidelines.
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The TB42E is renowned for its rugged, overbuilt mechanical design. Its cast-iron block, simple OHV layout, and lack of forced induction make it fundamentally reliable. Longevity is excellent with basic maintenance, particularly regular oil changes and timely replacement of ignition components. Many examples have surpassed 400,000 km in demanding off-road conditions.
The most frequent issues are worn distributor caps and rotors causing misfires, clogged or leaking fuel injectors affecting performance, valve train wear requiring periodic adjustment, and age-related cooling system leaks. These are generally inexpensive and straightforward to fix.
The TB42E engine was primarily fitted to the Nissan Patrol (Y60) and Nissan Safari (Y60) from 1987 to 1997. It was the fuel-injected petrol option for these robust off-road vehicles, offering more power and refinement than the carburetted TB42.
Minor power gains are possible through intake and exhaust upgrades, ignition timing optimization, or ECU chip tuning. Significant power increases are limited by the engine's low compression and basic OHV head design. It responds well to basic bolt-on modifications for improved throttle response and a slight power bump.
Fuel economy is moderate, reflecting its large displacement and torque focus. Expect approximately 14.0-17.0 L/100km (17-20 mpg UK) in mixed driving and 12.0-14.0 L/100km (20-24 mpg UK) on the highway for a well-maintained Patrol. Economy is heavily influenced by vehicle weight and driving style.
No. The Nissan TB42E is generally considered a non-interference (or 'free-wheeling') engine. If the timing chain were to fail or jump, the pistons and valves would not collide, preventing catastrophic internal damage, though the engine would stop running.
Nissan originally specified API SF or SG grade oil, typically SAE 10W-30 for moderate climates or 20W-50 for hotter conditions. A modern, high-quality mineral or semi-synthetic oil meeting ACEA A3 specification is a suitable and often recommended replacement.
Comprehensive technical documentation and regulatory references
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NISSAN Official Site
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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.
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