98 Acura Integra Auto to Manual Conversion

The 1998 Acura Integra automatic to manual transmission conversion involves replacing the factory automatic transmission with a manual gearbox, typically using OEM Honda/Acura components for compatibility. This comprehensive guide covers the process, required parts, tools, installation steps, and considerations for converting your 1998 Acura Integra from automatic to manual transmission.

Conversion Overview

The automatic to manual conversion for the 1998 Acura Integra involves replacing the entire drivetrain components to accommodate manual transmission operation while maintaining vehicle reliability and performance.

Required Parts List

Complete list of components needed for successful conversion.

1. Manual Transmission (Y80/S80 from compatible Integra/ Civic)
2. Clutch Master Cylinder and Reservoir
3. Clutch Slave Cylinder and Hydraulic Line
4. Manual Transmission Flywheel and Pressure Plate
5. Clutch Disc and Release Bearing
6. Manual Transmission Pedal Assembly
7. Shift Linkage and Shifter Assembly
8. Manual Transmission ECU or Wiring Harness
9. Manual Transmission Compatible CV Axles
10. Starter Motor for Manual Transmission
11. Transmission Mounts and Brackets
12. Manual Transmission Fluid

IMPORTANT! Ensure all parts are from compatible Honda/Acura models for proper fitment.

Tools Needed

Essential tools for the conversion process.

1. Socket Set (10mm-19mm, deep well sockets)
2. Wrench Set (combination wrenches)
3. Transmission Jack or Floor Jack with Stands
4. Torque Wrench (for proper bolt tightening)
5. Clutch Alignment Tool
6. Bleeder Kit for Hydraulic System
7. Pry Bars and Screwdrivers
8. Fluid Catch Pan
9. Jack Stands (minimum 4 for safety)
10. Transmission Fluid Pump

SAFETY FIRST! Always use jack stands; never work under vehicle supported only by jack.

Pre-Conversion Preparation

• Vehicle Preparation: Park on level surface, engage parking brake, disconnect battery.
• Fluid Drainage: Drain automatic transmission fluid, engine oil if necessary.
• Component Inspection: Check all replacement parts for wear or damage.
• Workspace Setup: Ensure adequate lighting and ventilation.
• Time Allocation: Allow 8-12 hours for complete conversion.
• Safety Gear: Wear safety glasses and gloves throughout process.

Removal Process

Step-by-step automatic transmission removal.

1. Disconnect battery and remove air intake system
2. Remove shift cable and linkage from automatic transmission
3. Disconnect transmission cooler lines and electrical connectors
4. Remove starter motor and torque converter access cover
5. Unbolt torque converter from flex plate
6. Support engine with jack and remove transmission mount bolts
7. Remove CV axles from transmission
8. Lower transmission carefully using transmission jack
9. Remove flex plate and automatic transmission components

CAUTION! Transmission is heavy; use proper lifting equipment and assistance.

Installation Steps

Manual transmission installation procedure.

1. Install manual transmission flywheel and torque to specification
2. Mount clutch disc using alignment tool and install pressure plate
3. Install manual transmission with new release bearing
4. Connect shift linkage and shifter assembly
5. Install clutch hydraulic system components
6. Mount pedal assembly and connect clutch master cylinder
7. Install manual transmission compatible CV axles
8. Connect all electrical connectors and sensors
9. Fill transmission with proper manual transmission fluid
10. Bleed clutch hydraulic system

Wiring and Electronics

Electrical system modifications required for conversion.

NOTE: Professional wiring knowledge recommended for electrical modifications.

Clutch System Setup

Proper clutch installation and adjustment.

1. Install clutch master cylinder in engine bay
2. Mount clutch pedal assembly and connect push rod
3. Install clutch slave cylinder on transmission
4. Connect hydraulic line between master and slave cylinders
5. Bleed system thoroughly to remove air bubbles
6. Adjust clutch pedal free play to 10-15mm
7. Test clutch engagement and disengagement

WARNING! Improper clutch adjustment can cause premature wear or failure.

Testing and Adjustment

Post-installation verification and fine-tuning.

1. Check all fluid levels (transmission, brake/clutch reservoir)
2. Test clutch operation and pedal feel
3. Verify gear shifting smoothness through all gears
4. Test reverse gear engagement and backup lights
5. Check for leaks at all connection points
6. Road test for proper operation and performance
7. Adjust shift linkage if necessary for precise shifting

Common Issues

TIP: Always double-check torque specifications on critical components.

Maintenance Tips

Proper maintenance for converted manual transmission.

• Fluid Changes: Replace manual transmission fluid every 30,000 miles
• Clutch Inspection: Check clutch wear every 15,000 miles
• Hydraulic System: Inspect for leaks and fluid condition regularly
• Shift Linkage: Lubricate and adjust as needed for smooth operation
• Mount Inspection: Check engine and transmission mounts for wear
• Professional Service: Complex issues should be addressed by qualified technicians

Service Resources: Acura dealerships, qualified import specialists, online Honda/Acura forums