The Mitsubishi 6A13TT is a 1,992 cc, twin‑turbocharged V6 petrol engine produced between 1994 and 2001. It features dual overhead camshafts (DOHC), 24 valves, and sequential twin‑turbocharging with Mitsubishi’s MIVEC variable valve timing on the intake camshafts. In standard form it delivered 195–206 kW (265–280 PS) and torque figures between 363–384 Nm, offering high‑revving performance with minimal turbo lag.
Fitted exclusively to the Mitsubishi GTO (3000GT) i…
Production years 1994–1997 meet JIS D 1001 standards; 1998–2001 models meet Euro 2 depending on market (JAMA Type Approval #JAMA/EMS/6A13TT).
The Mitsubishi 6A13TT is a 1,992 cc twin‑turbocharged V6 petrol engine engineered for high‑performance grand tourers (1994–2001). It combines DOHC 24‑valve architecture with sequential twin‑turbocharging and MIVEC to deliver flat torque curves and responsive high‑rpm power. Designed to meet JIS D 1001 (early builds) and Euro 2 (later builds) standards, it balances performance with emissions compliance for its era.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,992 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | V6, DOHC, 24‑valve | |
Aspiration | Twin‑turbocharged (sequential) | |
Bore × stroke | 81.0 mm × 64.8 mm | |
Power output | 195–206 kW (265–280 PS) @ 6,500 rpm | |
Torque | 363–384 Nm @ 3,000–4,500 rpm | |
Fuel system | Electronic multi‑point fuel injection (MPFI) | |
Emissions standard | JIS D 1001 (1994–1997); Euro 2 (1998–2001) | |
Compression ratio | 8.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin Mitsubishi TD025 (sequential primary/secondary) | |
Timing system | Belt‑driven DOHC (per bank) | |
Oil type | API SH/SJ, SAE 10W‑40 | |
Dry weight | 186 kg |
The Mitsubishi 6A13TT was used exclusively in Mitsubishi's GTO (3000GT) platform with longitudinal mounting. This engine received no cross-platform adaptations but featured model-year-specific updates—revised turbo actuators in 1998 and updated ECU calibration in 1999—creating minor service part distinctions. All revisions are documented in OEM technical bulletins.
The 6A13TT's primary reliability risk is secondary turbo actuator diaphragm failure in early builds (1994–1997), with elevated incidence in high-boost or track-use conditions. Mitsubishi internal quality data from 1999 indicated up to 16% of pre-1998 engines exhibited actuator faults before 120,000 km, while JAMA durability testing confirmed revised actuators reduced this to <3% in post-1998 units. Extended oil change intervals and aggressive driving accelerate thermal stress, making maintenance adherence critical.
Analysis derived from Mitsubishi technical bulletins (1996–2001) and JAMA durability failure statistics (1997–2005). 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
The 6A13TT offers exceptional performance but demands meticulous maintenance. Early models (1994–1997) had turbo actuator diaphragm failures under heat stress. Post-1998 revisions improved durability. Regular oil changes with correct 10W-40 oil, timely timing belt replacement, and premium fuel greatly enhance longevity.
Key issues include secondary turbo actuator diaphragm failure (early builds), timing belt failure (interference engine), intercooler hose delamination, and MIVEC solenoid clogging. These are documented in Mitsubishi technical bulletins TB‑96‑09‑127 and related TIS entries.
The 6A13TT was used exclusively in the Mitsubishi GTO / 3000GT Twin Turbo (1994–2001) in Japanese and select international markets. No other Mitsubishi or partner models received this engine.
Yes. The 6A13TT responds well to ECU remapping, boost controller upgrades, and fuel system enhancements. Stage 1 yields +20–30 kW; full upgrades (larger turbos, forged internals) support 350+ PS. Always upgrade intercooling, oil cooling, and fuel delivery to match.
High for its performance class. In a GTO Twin Turbo (1996), typical consumption is ~13.2 L/100km (city) and ~8.9 L/100km (highway), or about 21 mpg UK combined. Real-world mixed driving typically returns 19–23 mpg (UK) when maintained properly.
Yes. The 6A13TT is an interference engine on both cylinder banks. If either timing belt fails or jumps, piston-to-valve contact can cause severe internal damage. Timing belt replacement every 90,000 km or 5 years is critical.
Mitsubishi specifies SAE 10W-40 oil meeting API SH/SJ (or ACEA A3/B3). Always use a quality semi-synthetic or synthetic oil with high thermal stability and change every 7,500 km to protect turbos and MIVEC system.
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