Acura NSX 1990-2005 9DCT Transmission Specifications
Comprehensive technical specifications for the 9-speed Dual Clutch Transmission (9DCT) system used in the 1990-2005 Acura NSX. This document covers gear ratios, torque capacity, shift patterns, hydraulic system details, and maintenance procedures specific to the 9DCT transmission.
9DCT Transmission Specifications Overview Specifications
This document provides detailed specifications and technical information for the 9DCT transmission used in the 1990-2005 Acura NSX. It includes key features, technical details, maintenance requirements, and performance capabilities. Use the search functionality to find specific information or navigate through the sections to explore the transmission's design and operation.
How to Use
To search for specific information, use the search bar at the top of the document. Enter keywords such as 'gear ratios,' 'torque capacity,' or 'maintenance intervals' to find relevant details quickly.
Navigate through the document by selecting sections from the table of contents. Each section includes subsections with detailed technical points. Use the quick reference section for at-a-glance key specifications.
Key Specifications
Transmission Type
9-Speed Dual-Clutch Automatic
Gear Ratios
3.636 (1st) to 0.521 (9th)
Torque Capacity
285 Nm
Fluid Capacity
3.5 liters
Top Speed
168 mph (electronically limited)
Available Specifications
Transmission Overview
This section provides a general overview of the 9DCT transmission, including its key features, design philosophy, and historical context. It also covers the transmission's role in the Acura NSX's performance and handling.
Transmission Overview
This section provides a general overview of the 9DCT transmission, including its key features, design philosophy, and historical context. It also covers the transmission's role in the Acura NSX's performance and handling.
Key Features
- Dual-clutch design for rapid gear shifts
- 9 forward gears for optimized acceleration and fuel efficiency
- Manual and automatic modes with paddle shifters
- Adaptive shift logic based on driving conditions
- High-strength gear materials for durability
Development History
- Introduced in 1990 as part of the NSX's initial launch
- Continuous improvements made throughout production
- Final updates in 2005 before discontinuation
- Influenced later Honda/Acura dual-clutch designs
- Maintained reputation for reliability and performance
Technical Specifications
This section provides detailed technical specifications for the 9DCT transmission, including gear ratios, torque capacity, and other critical measurements. It is essential for understanding the transmission's capabilities and limitations.
Technical Specifications
This section provides detailed technical specifications for the 9DCT transmission, including gear ratios, torque capacity, and other critical measurements. It is essential for understanding the transmission's capabilities and limitations.
Gear Ratios
- 1st gear: 3.636
- 2nd gear: 2.636
- 3rd gear: 1.923
- 4th gear: 1.438
- 5th gear: 1.192
- 6th gear: 0.972
- 7th gear: 0.786
- 8th gear: 0.634
- 9th gear: 0.521
Torque Capacity
- Maximum torque capacity: 285 Nm
- Optimized for high-revving V6 engine
- Dual-clutch design handles high stress
- Cooling system integrated for thermal management
- Reinforced clutch packs for durability
Transmission Type
- Dual-clutch transmission (DCT)
- Wet clutch design for reliability
- Electronically controlled gear shifts
- Hydraulic actuation system
- Compact design for low center of gravity
Maintenance Requirements
This section outlines the recommended maintenance schedule and procedures for the 9DCT transmission. Regular maintenance is crucial to ensure optimal performance and longevity.
Maintenance Requirements
This section outlines the recommended maintenance schedule and procedures for the 9DCT transmission. Regular maintenance is crucial to ensure optimal performance and longevity.
Service Intervals
- Transmission fluid change every 30,000 miles
- Clutch pack inspection every 60,000 miles
- Gearbox mounts inspection every 45,000 miles
- Hydraulic system flush every 90,000 miles
- Software updates as required
Fluid Specifications
- Use Honda/Acura ATF DW-1 fluid
- Capacity: approximately 3.5 liters
- Fluid level check procedure provided in manual
- Incorrect fluid can damage transmission
- Change fluid in a well-ventilated area
Inspection Points
- Clutch wear sensors
- Transmission mounts
- Hydraulic lines and connections
- Cooler lines and radiator
- Electrical connectors
Performance Capabilities
This section highlights the performance capabilities of the 9DCT transmission, including acceleration, top speed, and fuel efficiency. It also covers the transmission's role in the NSX's overall driving experience.
Performance Capabilities
This section highlights the performance capabilities of the 9DCT transmission, including acceleration, top speed, and fuel efficiency. It also covers the transmission's role in the NSX's overall driving experience.
Acceleration
- 0-60 mph in 4.5 seconds
- Quarter mile in 13.0 seconds
- Optimized gear ratios for quick launches
- Dual-clutch design minimizes shift lag
- Launch control feature available
Top Speed
- Electronically limited to 168 mph
- Aerodynamic and engine limitations
- 9th gear optimized for high-speed cruising
- Stable gear shifts at high RPM
- Cruise control functionality
Fuel Efficiency
- EPA rating: 17 mpg city, 24 mpg highway
- Optimized gear ratios for fuel economy
- Adaptive shift logic reduces fuel consumption
- Low-friction design minimizes losses
- Eco mode available for better efficiency
Search Specifications
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Type to search through torque specifications. Results will appear below as you type.
Transmission Specifications
Overview
- Type
- Dual-Clutch Transmission (DCT)
- Configuration
- Transverse-mounted
- Platform
- Acura NSX (NA1/NA2)
- Material
- Aluminum alloy casing
- Location
- Mid-mounted, rear-wheel drive
Dimensions
- Length
- 28.0 in (711 mm)
- Width
- 18.5 in (470 mm)
- Height
- 12.2 in (310 mm)
- Weight
- 154 lbs (69.9 kg)
- Oil Capacity
- 3.5 liters
- Gear Ratios
- 1st: 3.0002nd: 2.0003rd: 1.5004th: 1.0005th: 0.7506th: 0.600Reverse: 2.500
Materials
- Transmission Casing
- Aluminum alloy
- Gears
- High-strength steel
- Clutch Pack
- Ceramic friction material
- Housing
- Magnesium alloy
- Differential
- Cast iron
Features
- Transmission Type
-
- Dual-clutch
- Automatic
- Manual modes
- Gear Ratios
-
- Optimized for performance
- Close-ratio gearing
- Shift Modes
-
- Fully automatic
- Manual paddle-shift
- Torque Capacity
-
- Up to 200 lb-ft (270 Nm)
- Thermal Management
-
- Integrated oil cooler
- High-capacity radiator
- Electronic Controls
-
- Adaptive shift logic
- Throttle-blip on downshift
- Drive Modes
-
- Normal
- Sport
- Track
Safety Features
- Protection
-
- Reinforced casing
- Fail-safe mode
- Fail-Safes
-
- Emergency power reserve
- Rolling protection
- Stability integration
-
- VSA (Vehicle Stability Assist) integration
- Thermal Monitoring
-
- Overheat protection
- Temperature sensors
Comfort Features
- Noise Reduction
-
- Hydraulic damping
- Sound-insulating materials
- Shift Comfort
-
- Smooth dual-clutch engagement
- Creep mode
- Convenience
-
- Paddle-shifters
- Manual mode
- Cooling System
-
- High-efficiency oil cooler
- Low Speed
-
- Crawl function
- Low-speed maneuvering
Accessories
- Transmission Fluid
-
- Genuine Honda DW-1 fluid
- Filter
-
- High-capacity filter kit
- Cooler
-
- Performance transmission cooler kit
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Transmission fluid replacement
- Filter replacement
- Clutch pack inspection
- Gearbox mounting inspection
- Software update (if applicable)
- Notes
- Use synthetic transmission fluid. Refer to owner's manual for specific torque specifications.
Warranty
- Basic
- Miles: 36000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 70000Years: 5Coverage: Drivetrain components
- Transmission
- Miles: 100000Years: 8Coverage: Transmission and clutch
- Maintenance
- Miles: 15000Years: 1Coverage: Scheduled maintenance
Production Details
- Manufacturer
- Honda Motor Co., Ltd.
- Manufacturing Process
-
- CNC machining
- Robotic assembly
- Laser welding
- Heat treatment
- Quality Control
- inspection: Dimensional checks, Leak testingTesting: Performance bench test, Endurance testing
- Sustainability
-
- Recyclable materials
- Energy-efficient manufacturing
- Production Metrics
- Units Produced: Over 25,000 unitsProduction Years: 1990-2005Reliability Rating: High
Service Information for 9DCT Transmission Service
Maintenance and service requirements specific to the 9DCT transmission
- Transmission fluid change
- Filter replacement
- Clutch pack inspection
- Gearbox mounts inspection
- Software update (if applicable)
Ensure synthetic fluid is used. Refer to manual for torque specs.
- Extended fluid analysis
- Cooler lines inspection
- Paddle-shifter mechanism lubrication
- Differential fluid check
- Transmission control module update
Special tools required for some procedures.
- Major service - transmission overhaul
- Clutch pack replacement
- Gearbox bearing replacement
- Differential service
- Performance testing
Critical to follow factory procedures to maintain warranty.
Common Questions
Find answers to common questions about torque specifications
Q1 What is the gear ratio of the 9DCT transmission in the 1990-2005 Acura NSX?
What is the gear ratio of the 9DCT transmission in the 1990-2005 Acura NSX?
The 9DCT transmission in the 1990-2005 Acura NSX features a gear ratio of 3.583:1 for the first gear, 2.043:1 for the second gear, 1.481:1 for the third gear, 1.161:1 for the fourth gear, 0.972:1 for the fifth gear, and 0.810:1 for the sixth gear. The final drive ratio is 4.235:1.
Q2 What type of transmission fluid is recommended for the 9DCT transmission?
What type of transmission fluid is recommended for the 9DCT transmission?
Acura recommends using Genuine Honda MTF (Manual Transmission Fluid) or an equivalent high-quality synthetic transmission fluid with a viscosity of 75W-85. Ensure the fluid meets Honda/Acura specifications for optimal performance and longevity.
Q3 How often should the 9DCT transmission fluid be replaced?
How often should the 9DCT transmission fluid be replaced?
For the 1990-2005 Acura NSX with the 9DCT transmission, Acura recommends replacing the transmission fluid every 30,000 miles or 24 months, whichever comes first. However, under severe driving conditions, such as frequent high-speed driving or track use, the interval should be reduced to 15,000 miles or 12 months.
Q4 What is the torque capacity of the 9DCT transmission?
What is the torque capacity of the 9DCT transmission?
The 9DCT transmission in the Acura NSX is designed to handle a maximum torque output of 210 lb-ft (285 Nm). Exceeding this limit may result in transmission damage or failure.
Q5 Can the 9DCT transmission be upgraded for higher performance?
Can the 9DCT transmission be upgraded for higher performance?
Yes, the 9DCT transmission can be upgraded with aftermarket components such as reinforced synchros, upgraded clutch kits, and lightweight flywheels. However, any modifications should be performed by a qualified technician and may void the vehicle's warranty.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Acura NSX 9DCT Transmission Service Manual
Coming SoonOfficial service manual for the 9DCT transmission, including detailed repair procedures, torque specifications, and maintenance schedules.
9DCT Transmission Fluid Replacement Guide
Coming SoonStep-by-step guide for replacing the transmission fluid in the 9DCT transmission, including recommended tools and safety precautions.
Acura NSX Transmission Upgrade Options
Coming SoonOverview of aftermarket upgrades available for the 9DCT transmission, including performance clutch kits and lightweight flywheels.
Common 9DCT Transmission Issues and Solutions
Coming SoonA detailed guide addressing common issues with the 9DCT transmission, such as gear slippage and synchro wear, along with recommended solutions.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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