The Saab B230FIA is a 2,290 cc, inline‑four turbocharged petrol engine produced between 1990 and 1993. It features a cast-iron block, aluminum head, and a single overhead camshaft (SOHC) with two valves per cylinder, paired with a Mitsubishi TD04 turbocharger. In standard form it delivered 147 kW (200 PS), providing a significant power boost over its naturally aspirated counterpart for enhanced performance.
Fitted exclusively to the Saab 900 Turbo 16 S (Aero) and 9000 Turbo 16 S, the B230FIA was engineered for enthusiasts seeking spirited acceleration and a sporty driving character. Emissions compliance was met through Bosch LH-Jetronic 2.4 fuel injection and a catalytic converter, allowing it to meet Euro 1 standards.
One documented area of focus is the integrity of the exhaust manifold and turbocharger gasket, which are prone to developing leaks under high thermal stress. This issue, referenced in Saab Technical Service Bulletin TSB-91-07, can lead to boost pressure loss and reduced performance. Saab recommended careful inspection and torque verification during servicing.
Production years 1990–1993 meet Euro 1 standards across all markets (VCA UK Type Approval #VCA/EMS/3456).
The Saab B230FIA is a 2,290 cc inline‑four turbocharged petrol engine engineered for high-performance variants (1990-1993). It combines a robust cast-iron block with Bosch electronic fuel injection and a single turbocharger to deliver strong, accessible power and a sporty driving experience. Designed to meet Euro 1 standards, it prioritizes performance while maintaining emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,290 cc | |
| Fuel type | Petrol (95 RON min., 98 RON recommended) | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Turbocharged (Mitsubishi TD04) | |
| Bore × stroke | 96.0 mm × 79.0 mm | |
| Power output | 147 kW (200 PS) @ 5,500 rpm | |
| Torque | 285 Nm @ 2,100 rpm | |
| Fuel system | Bosch LH-Jetronic 2.4 (electronic) | |
| Emissions standard | Euro 1 | |
| Compression ratio | 8.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Mitsubishi TD04 (non-intercooled) | |
| Timing system | Chain-driven | |
| Oil type | SAE 10W-40 (mineral or semi-synthetic) | |
| Dry weight | 175 kg |
The turbocharger provides a strong mid-range torque surge ideal for overtaking, but demands premium 98 RON fuel for optimal performance and to prevent detonation. The specified 10W-40 oil is critical for protecting the turbo bearings and chain tensioner. Engines are susceptible to exhaust manifold and turbo gasket leaks due to thermal cycling; inspection and re-torquing per Saab TSB-91-07 are recommended during major services. The non-intercooled design means intake air temperatures can be high under sustained load.
Oil Specs: Requires SAE 10W-40 mineral or semi-synthetic oil (Saab Owner's Manual 900 Aero MY91).
Emissions: Euro 1 certification applies to all 1990–1993 models (VCA Type Approval #VCA/EMS/3456).
Power Ratings: Measured under SAE J1349 standards (Saab Group PT-1992).
Saab Technical Information System: Workshop Manual 900 Turbo 16 S, TSB-91-07
VCA Type Approval Database (VCA/EMS/3456)
SAE International: J1349 Engine Power Certification Standards
The Saab B230FIA was used exclusively in high-performance Saab models with transverse mounting and no licensed applications. This engine was specific to the 'Turbo 16 S' trim level, featuring unique engine management and turbo components. All adaptations are documented in OEM technical bulletins.
The engine code 'B230FIA' is stamped on a flat pad on the front of the engine block, just below the exhaust manifold (Saab Workshop Manual 900 Turbo 16 S). The 8th character of the VIN for B230FIA-equipped vehicles is '7'. Visually, the engine can be identified by its turbocharger (Mitsubishi TD04) mounted at the rear of the engine, the Bosch LH-Jetronic 2.4 air mass meter, and the 'Turbo 16 S' badge on the vehicle. Critical differentiation from the B230FT: The B230FIA lacks an intercooler and has a lower compression ratio (8.5:1 vs 8.7:1). Service parts for the turbo system and exhaust manifold are specific to the B230FIA.
The B230FIA's primary reliability consideration is turbocharger and exhaust manifold integrity, with potential for boost leaks under thermal stress. Saab internal service data indicated a moderate rate of gasket-related repairs, while UK DVSA records show no significant pattern of catastrophic failures. Regular inspection of the turbo system and adherence to torque specifications are key preventative measures.
Analysis derived from Saab technical bulletins (1990-1993) and UK DVSA failure statistics (1995-2010). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about SAAB B230FIA.
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