Acura Integra Manual Transmission Swap

The Acura Integra manual transmission swap involves replacing an automatic transmission with a manual transmission for improved performance, control, and driving experience. This comprehensive guide covers the process, required parts, tools, installation steps, and considerations for successfully completing the swap on various Integra models including GS-R and Type R variants.

1. Benefits of Manual Swap 2. Required Parts List 3. Tools Needed 4. Pre-Installation Preparation 5. Removal Process 6. Installation Steps 7. Wiring and Electronics 8. Clutch System Setup 9. Testing and Troubleshooting 10. Maintenance Considerations 11. Common Issues

Benefits of Manual Swap

Key advantages: Improved acceleration, better fuel efficiency, enhanced driver control, reduced maintenance costs, and increased resale value.

BenefitDescription
PerformanceFaster acceleration and better power transfer
ControlDirect gear selection and engine braking
ReliabilitySimpler mechanical design with fewer failure points
Fuel EconomyBetter efficiency through optimal gear selection
Driving ExperienceMore engaging and sporty driving dynamics
Resale ValueHigher demand for manual transmission models
MaintenanceLower long-term maintenance costs
CustomizationAbility to use performance clutch and flywheel

Required Parts List

Essential components for complete manual transmission conversion.

  1. Manual transmission (Y80, S80, or compatible)
  2. Clutch assembly (pressure plate, disc, release bearing)
  3. Flywheel (lightweight options available)
  4. Manual transmission axles
  5. Shift linkage and cables
  6. Clutch master and slave cylinders
  7. Manual transmission ECU
  8. Pedal assembly (clutch pedal)
  9. Starter motor (manual transmission compatible)
  10. All necessary bolts, brackets, and hardware

NOTE! Ensure all parts are compatible with your specific Integra model and year.

Tools Needed

Professional tools required for successful transmission swap.

WARNING! Use proper safety equipment and secure vehicle before beginning work.

Pre-Installation Preparation

Proper preparation ensures smooth installation process.

  1. Vehicle inspection: Check engine and chassis condition
  2. Parts verification: Confirm all components are present and compatible
  3. Workspace setup: Clean, well-lit area with adequate space
  4. Vehicle preparation: Disconnect battery, drain fluids
  5. Documentation: Take photos of original setup for reference
  6. Time allocation: Allow 8-12 hours for complete swap

CAUTION! Always work on level surface with parking brake engaged.

Removal Process

Step-by-step automatic transmission removal procedure.

  1. Disconnect battery and remove air intake system
  2. Drain transmission fluid and remove axles
  3. Disconnect shift cable, sensors, and wiring harness
  4. Remove starter motor and torque converter bolts
  5. Support engine with jack and remove transmission mounts
  6. Carefully lower automatic transmission from vehicle
  7. Remove flexplate and prepare engine for manual components

Tip: Label all connectors and take photos for reassembly reference.

Installation Steps

Manual transmission installation procedure.

  1. Install clutch and flywheel using alignment tool
  2. Mount manual transmission to engine
  3. Install new axles and shift linkage
  4. Mount clutch hydraulic system components
  5. Install pedal assembly and connect clutch master cylinder
  6. Replace ECU with manual transmission version
  7. Fill with proper transmission fluid
  8. Bleed clutch hydraulic system

WARNING! Torque all bolts to factory specifications using torque wrench.

Wiring and Electronics

Electrical modifications required for manual conversion.

ComponentModification Required
ECUReplace with manual transmission ECU
Neutral Safety SwitchBypass or modify wiring
Reverse LightsConnect to manual transmission switch
Speed SensorEnsure compatibility and connection
Clutch SwitchInstall for cruise control and start safety
Dashboard LightsAddress any warning lights

NOTE! Proper wiring is crucial for vehicle operation and safety systems.

Clutch System Setup

Clutch hydraulic system installation and bleeding.

  1. Mount clutch master cylinder to firewall
  2. Install clutch pedal and connect to master cylinder
  3. Mount slave cylinder to transmission
  4. Connect hydraulic line between master and slave
  5. Bleed system to remove air bubbles
  6. Adjust clutch pedal free play
  7. Test clutch engagement and disengagement

CAUTION! Use only recommended brake fluid for clutch hydraulic system.

Testing and Troubleshooting

Post-installation verification and problem resolution.

  1. Initial inspection: Check all connections and fluid levels
  2. Startup test: Verify engine starts with clutch depressed
  3. Gear engagement: Test all gears including reverse
  4. Road test: Check shifting under load and at various speeds
  5. Clutch operation: Verify smooth engagement and disengagement
  6. Final adjustments: Fine-tune shift linkage and clutch pedal

Tip: Perform initial test in safe, controlled environment.

Maintenance Considerations

Ongoing maintenance for manual transmission system.

NOTE! Proper maintenance extends transmission life and performance.

Common Issues

ProblemPossible CauseCorrective Action
Grinding gearsSynchro wear/fluidReplace transmission fluid; check synchro condition
Hard shiftingLinkage/clutchAdjust shift linkage; check clutch hydraulic system
Clutch slippageWorn clutchReplace clutch assembly; check flywheel surface
Fluid leaksSeals/gasketsReplace axle seals, input shaft seal, or case halves
Noise in neutralInput shaft bearingReplace input shaft bearing; check transmission wear
VibrationMounts/alignmentCheck and replace engine/transmission mounts

Professional Help: Consult experienced mechanic for complex issues.

Resources: Acura forums, service manuals, professional workshops

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