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6393 – Champion Retard Breaker Left Hand Rotation Magneto
Available now on the Airparts.aero Marketplace.
Overview
The Champion Slick 6393 is a genuine OEM, left-hand rotation ignition magneto, engineered for high-performance, six-cylinder Lycoming engines. This is not a standard impulse-coupled magneto; it is a specialized retard breaker magneto, a key component of a "shower of sparks" ignition booster system. It features a second, independent set of breaker points used only during the engine start sequence to provide a retarded, high-energy spark. This advanced system ensures faster, smoother starts, reduces the risk of engine kickback, and provides superior ignition performance, making it the standard for many high-compression Lycoming powerplants.
Key Features
- Retard Breaker Starting System: The core of this magneto is a dual set of breaker points. It includes the standard "main" points for normal engine operation, plus a second "retard" set of points timed to fire much later (retarded timing) during engine start. This is a critical safety and performance feature for high-compression engines.
- "Shower of Sparks" Integration: Specifically designed to be paired with an external starting vibrator ("buzz box"). The vibrator supplies a pulsating current to the magneto's coil while the retard breaker points are active, creating a continuous "shower" of intense sparks for rapid and reliable light-off.
- No Impulse Coupling: This magneto does not contain a mechanical impulse coupling. Its starting function is entirely electrical, which results in a lighter, simpler, and often more reliable magneto assembly with fewer mechanical parts to wear out.
- High-Energy Output: As a member of the Slick 6300-series, it features a high-efficiency coil and rotating magnet design that produces a strong, consistent spark across all engine operating RPMs, ensuring efficient combustion and full power development.
- Genuine Champion OEM Part: As a genuine factory component from the leader in aviation ignition, it guarantees perfect fitment, correct internal timing (both main and retard), and conformance to the stringent quality standards required for a flight-critical system.
Technical Specifications
- Part Number: 6393
- Manufacturer: Slick by Champion Aerospace
- Component Type: Retard Breaker Ignition Magneto
- Rotation: Left Hand (Counter-Clockwise)
- Starting System: Retard Breaker (for use with starting vibrator)
- Lag Angle: Factory-set retarded timing on the starting points.
- Application: For 6-Cylinder Engines
- Certification: FAA-PMA
Aircraft Compatibility
The Slick 6393 is the specified OEM magneto for a wide range of high-performance aircraft powered by six-cylinder Lycoming engines equipped with a "shower of sparks" starting system.
- Common Lycoming Engine Series:
- IO-540 (various models)
- Common Aircraft Platforms:
- Piper PA-32 Series (Saratoga, Cherokee Six)
- Piper PA-24-260 Comanche
- Many high-performance experimental aircraft utilizing IO-540 engines.
Applications
The 6393 is a flight-critical component at the heart of an advanced ignition system:
- Primary Ignition: As one of two magnetos in a dual-ignition system, it is responsible for firing one set of spark plugs in each cylinder during normal operation.
- Advanced Starting: Provides the retarded, high-energy spark required for a safe and efficient engine start.
- Engine Overhaul: A primary component that is either overhauled or replaced during any major engine overhaul to ensure the ignition system is restored to zero-time reliability.
Why Choose 6393?
Starting a high-compression, large-displacement engine can place immense stress on the starter and engine components. The retard breaker system, of which the Slick 6393 is a key part, is a superior solution that provides a safer, more reliable start than a standard impulse coupling. Using a genuine Champion Slick magneto ensures that the internal timing, coil output, and component quality meet the certified standards required for your high-performance engine.
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- Meta Title: 6393 Champion Slick Retard Breaker Magneto | For Lycoming IO-540 | Airparts.aero
- Meta Description: Purchase the genuine Champion Slick 6393, a left-hand rotation, retard breaker magneto for Lycoming IO-540 series engines. A key component for "shower of sparks" starting systems.
- SEO and Plain Text Keywords: 6393, Slick magneto, Champion Aerospace, retard breaker, aircraft magneto, shower of sparks, Lycoming IO-540, Piper Saratoga parts, Comanche parts, aircraft ignition, PMA parts, Airparts.aero.
Order Your Slick 6393 Magneto Now
Ensure the reliability and safety of your aircraft's starting and ignition system with a genuine Champion Slick magneto. Visit Airparts.aero to inquire about new or overhauled 6393 retard breaker magnetos today.
SEO-Enhanced Addendum
The Slick 6393 and its "shower of sparks" system provide a significant advantage for starting. During a normal start, ignition timing is advanced (e.g., 25° Before Top Dead Center) for efficient power production at high RPM. However, firing a spark this early at slow cranking speeds can cause the combustion pressure to peak before the piston has reached the top of its stroke, resulting in a violent "kickback" that can damage the starter or ring gear. The 6393's retard breaker points are timed to fire much later, often After Top Dead Center. This ensures the piston is already on its way down before the combustion pressure peaks, resulting in a smooth start. The starting vibrator provides a continuous stream of sparks during this period, ensuring the fuel-air mixture ignites, even if the exact mixture ratio is not perfect. Once the engine starts and the start switch is released, the retard breaker circuit is deactivated, and the magneto begins firing normally on its main set of advanced-timing points.
Note: This is a flight-critical engine component. Installation and timing must be performed by a certified A&P mechanic in strict accordance with the current Lycoming maintenance and overhaul manuals. Incorrect timing can lead to poor engine performance, kickback, and catastrophic engine damage.
