MAS TD-80U / TD-98U
MAS Ignition Distributor User Manual
Model: TD-80U / TD-98U
Brand: MAS
Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your MAS Ignition Distributor. Designed for specific Honda and Acura models, this component is crucial for the vehicle's ignition system, ensuring reliable engine performance. Please read this manual thoroughly before proceeding with installation or any maintenance procedures.
Product Overview
The MAS Ignition Distributor is a complete assembly including the distributor housing, cap, rotor, and ignition coil. It is designed as a direct replacement for original equipment parts, ensuring proper fit and function.

Figure 1: Front view of the MAS Ignition Distributor, showing the cap, wiring harness, and main housing.

Figure 2: Side view of the distributor, highlighting the cap and spark plug wire terminals.

Figure 3: Close-up view of the 9-pin square connector and the drive shaft end.

Figure 4: Angled view of the complete distributor assembly.
Vehicle Compatibility
This MAS Ignition Distributor is compatible with the following vehicle models:
- 1997 Acura EL 1.6L l4 Naturally Aspirated
- 1996-1998 Honda Civic 1.6L l4 Naturally Aspirated
- 1997 Honda Civic del Sol 1.6L l4 Naturally Aspirated
Important Note:
Before installation, verify that the OEM part numbers match your vehicle's original part. Compatible OEM part numbers include: TD80, TD80U, TD-80U, TD-98U, 30100-P2E-A01, 30100P2EA01, TD98U. This distributor features a 9-pin square connector.
Installation (Setup)
Installation of an ignition distributor requires specific automotive knowledge and tools. It is highly recommended that this component be installed by a qualified professional mechanic to ensure proper function and avoid damage to the vehicle or the part.
General Installation Guidelines:
- Safety First: Disconnect the vehicle's battery before beginning any work on the ignition system. Ensure the engine is cool.
- Mark Rotor Position: Before removing the old distributor, mark the position of the rotor and the distributor housing relative to the engine block. This is critical for correct ignition timing.
- Disconnect Wiring and Hoses: Carefully disconnect the electrical connector (9-pin square connector) and any vacuum hoses attached to the old distributor.
- Remove Old Distributor: Unbolt the old distributor from the engine block. Note the orientation of the drive gear.
- Install New Distributor: Carefully insert the new MAS Ignition Distributor, aligning the drive gear and the housing with the marks made earlier. Ensure the O-ring seal is properly seated to prevent oil leaks.
- Secure and Connect: Bolt the new distributor into place. Reconnect the electrical connector and any vacuum hoses.
- Connect Spark Plug Wires: Transfer spark plug wires one by one from the old distributor cap to the new one, ensuring correct firing order.
- Reconnect Battery: Reconnect the vehicle's battery.
- Check Ignition Timing: After installation, it is essential to check and adjust the ignition timing using a timing light to ensure optimal engine performance and prevent damage.
Failure to follow proper installation procedures can lead to engine misfires, poor performance, or severe engine damage.
Operation
The ignition distributor is a key component in older internal combustion engines, responsible for distributing high voltage from the ignition coil to the correct spark plug at the precise moment. It works in conjunction with the engine's camshaft to ensure synchronized spark delivery for combustion.
Once installed and properly timed, the MAS Ignition Distributor operates automatically as part of the vehicle's engine management system. It ensures that the spark plugs fire in the correct sequence and at the optimal time for efficient fuel combustion, contributing to smooth engine operation and power delivery.
Maintenance
While the MAS Ignition Distributor is designed for durability, regular inspection of related components can prolong its lifespan and ensure consistent engine performance.
- Distributor Cap and Rotor: Periodically inspect the distributor cap and rotor for cracks, carbon tracking, corrosion, or excessive wear. Replace these components if any damage is observed.
- Spark Plug Wires: Check spark plug wires for cracks, fraying, or signs of arcing. Ensure they are securely connected to the distributor cap and spark plugs.
- Electrical Connections: Verify that the 9-pin electrical connector is clean, secure, and free from corrosion.
- Oil Leaks: Inspect the base of the distributor for any signs of oil leaks. A leaking O-ring may need replacement.
- Ignition Timing: If engine performance issues arise, have the ignition timing checked by a professional.
Troubleshooting
If you experience issues with your vehicle's ignition system, the following common problems and solutions may help. For complex issues, professional diagnosis is recommended.
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine Misfire or Rough Idling | Incorrect ignition timing, worn cap/rotor, faulty spark plug wires, internal distributor component failure. | Check and adjust timing. Inspect/replace cap, rotor, and wires. Consult a professional for internal component diagnosis. |
| No Start Condition (Cranking but no ignition) | No spark from coil, faulty igniter, incorrect wiring, damaged distributor shaft. | Verify electrical connections. Test for spark. Professional diagnosis for internal failures. |
| Oil Leak from Distributor Base | Damaged or improperly seated O-ring. | Replace the distributor O-ring. Ensure proper seating during installation. |
| Check Engine Light (CEL) related to ignition | Sensor malfunction within distributor, timing issues. | Scan for diagnostic trouble codes (DTCs). Address specific code recommendations. |
Specifications
| Feature | Detail |
|---|---|
| Brand | MAS |
| Model Number | TD-80U / TD-98U |
| OEM Part Numbers | TD80, TD80U, TD-80U, TD-98U, 30100-P2E-A01, 30100P2EA01, TD98U |
| Connector Type | 9 Pin Square Connector |
| Components Included | Distributor, Cap, Rotor, Coil |
| Item Weight | Approximately 3.1 pounds (1.4 kg) |
| Product Dimensions (L x W x H) | Approximately 7 x 4.5 x 5.5 inches (17.8 x 11.4 x 14 cm) |
| Installation Type | Bolt-On |
Warranty Information
The MAS Ignition Distributor comes with a One Year Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service. It does not cover damage resulting from improper installation, accident, misuse, abuse, or unauthorized modifications.
For warranty claims or inquiries, please retain your proof of purchase and contact the seller or manufacturer directly.
Support and Contact
For technical assistance, installation questions, or support regarding your MAS Ignition Distributor, please contact the manufacturer or your point of purchase. Professional assistance is always recommended for automotive repairs.
Manufacturer: King Auto Parts
For further information or to view other MAS products, you may visit the official MAS brand store or contact their customer service channels.
Official Product Video
Watch the official MAS Brand Video for an overview of the brand's commitment to quality and performance.
Video Description: This video provides an introduction to the MAS brand, showcasing their focus on automotive parts and accessories. It highlights the brand's dedication to quality and performance in the automotive industry.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.