LYCOMING PN68942 Flywheel 0-235

( Brand: Lycoming ), ( Manufacturer Part Number: PN68942 ), ( Part Type: Flywheel ), ( Country Of Origin: United States )

Review LYCOMING 0-235 Flywheel

The **Lycoming PN68942 0-235 Flywheel** is a meticulously engineered, high-performance component designed specifically for Lycoming O-235 aircraft engines, serving as a critical rotational mass that transfers power from the crankshaft to the propeller while maintaining optimal engine balance and durability. Crafted from precision-machined, high-grade steel, this flywheel is built to withstand the rigorous demands of aviation applications, where reliability and performance are paramount. Its robust construction ensures smooth operation, minimizing vibration and wear on the engine s internal components, thereby extending the overall lifespan of the powerplant. The flywheel features a precisely balanced design, which is essential for maintaining consistent propeller synchronization and reducing fatigue on the crankshaft and connecting rods. This component is often paired with the O-235 s crankshaft assembly, providing the necessary inertia to support the engine s operational efficiency, especially during takeoff, climb, and cruising phases. Whether installed in classic piston-powered aircraft like the Piper Cherokee, Cessna 172, or other general aviation models, the PN68942 flywheel delivers dependable performance, ensuring smooth power delivery and reducing the risk of mechanical failure. Its compatibility with Lycoming s O-235 series makes it a sought-after replacement part for maintenance and overhaul programs, offering aircraft owners and mechanics a durable solution that adheres to strict aviation standards.

**Pros and Cons of Buying a Lycoming O-235 (PN 68942, Flywheel Ending)**

### **Pros**

1. **Proven Reliability** The Lycoming O-235 is a well-established engine with decades of use in general aviation. It is known for its durability when properly maintained, making it a trusted choice for pilots and mechanics alike.

2. **Wide Availability of Parts** Due to its popularity, finding replacement parts, service manuals, and maintenance resources is relatively easy. Many aviation shops and online suppliers stock O-235 components.

3. **Good Performance for Its Class** The O-235 produces **115 horsepower**, which is sufficient for many light aircraft, including trainers, utility planes, and some sport aircraft. It offers a balance between power and fuel efficiency.

4. **Flywheel Ending (PN 68942) Advantage** The flywheel-ending version simplifies installation in some aircraft, as it eliminates the need for a separate flywheel housing. This can reduce complexity in overhauls and modifications.

5. **Lower Cost Compared to Modern Engines** While not the cheapest option, the O-235 is generally more affordable than newer turbocharged or fuel-injected engines. Overhauls and rebuilds are also more budget-friendly than some contemporary alternatives.

6. **Established Overhaul Standards** Lycoming has clear overhaul procedures, and many FAA-approved shops specialize in O-235 rebuilds. This ensures consistent quality control when the engine is restored.

7. **Compatibility with Many Aircraft** The O-235 fits a variety of aircraft, including the Cessna 172, 182, 206, and Piper Cherokee, making it a versatile purchase for used aircraft restorations or upgrades.

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### **Cons**

1. **Fuel Injection Requirement** The O-235 is a **fuel-injected** engine, which means it requires a working fuel injection system. Without proper fuel injection, the engine will not run correctly, adding complexity to maintenance and potential failure points.

2. **Higher Maintenance Needs** Like all air-cooled Lycomings, the O-235 requires **regular cylinder head inspections, valve adjustments, and magnetos checks**. Neglecting maintenance can lead to costly repairs, including head gasket failures or valve seat wear.

3. **Limited Lifespan Without Overhaul** Even with proper care, the O-235 typically lasts **1,500 2,000 hours** before requiring a major overhaul. If purchased with high time, the owner may face an expensive rebuild sooner rather than later.

4. **Potential for Hidden Damage** Used engines can have **internal wear, cracked pistons, or worn bearings** that are not immediately visible. A thorough inspection (including a borescope check) is essential before purchase.

5. **Fuel Injection System Vulnerabilities** Fuel injection systems can fail due to **clogged nozzles, faulty pumps, or electrical issues**. These repairs can be costly and time-consuming compared to carbureted engines.

6. **Environmental and Emissions Concerns** Older Lycomings, including the O-235, may not meet modern **FAA emissions standards** if modified improperly. Some airports or flight schools may have restrictions on older fuel-injected engines.

7. **Depreciation Over Time** While the O-235 is reliable, its value depreciates as newer, more efficient engines (such as the IO-360 or IO-550) become more common. This may affect resale value.

8. **Limited Turbocharging Options** Unlike some Lycoming models, the O-235 is not commonly turbocharged in stock form. Adding turbocharging would require significant modifications and may not be cost-effective.

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### **Conclusion**

The **Lycoming O-235 (PN 68942, flywheel ending)** is a **solid, reliable engine** that remains a popular choice for general aviation due to its proven track record and availability of parts. It is well-suited for **light aircraft, training planes, and utility operations** where fuel efficiency and moderate power are priorities.

However, **buyers must be prepared for higher maintenance costs, the complexity of fuel injection, and the eventual need for an overhaul**. If purchased used, **a thorough inspection (including a borescope check and service records review) is critical** to avoid hidden issues.

For **pilots or operators who prioritize simplicity, cost-effectiveness, and a well-documented engine**, the O-235 is a **good choice**. For those seeking **longer lifespan, lower maintenance, or higher performance**, newer engines (such as the **IO-360 or IO-550**) may be worth considering.

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### **Recommendation**

- You need a **reliable, proven engine** for a light aircraft.

- You have **access to proper maintenance and fuel injection expertise**.

- You are **prepared for eventual overhaul costs** (budget **$10,000 $15,000 ** for a rebuild).

- The engine has **low time (under 1,000 hours) and complete service records**.

- You want a **low-maintenance, long-term solution** without major overhauls.

- You lack **experience with fuel-injected Lycomings**.

- The engine has **high time (over 1,500 hours) without recent overhaul**.

- You are considering **turbocharging or major modifications** without proper expertise.

**Final Verdict:** The **O-235 is a sound purchase for the right buyer** one who values reliability, understands its maintenance needs, and is willing to invest in its upkeep. For most general aviation applications, it remains a **practical and capable engine choice**.

Details:

Belt wear and machined surfaces appear good. Used Lycoming 0-235 Flywheel, PN68942. Gear teeth chipped. Ring gear should be replaced.

part #: pn68942 price

• $175.00

specifications engineaviatio:

• brand: Lycoming
• mpn: Pn68942
• part type: Flywheel
• country of origin: United States

shipping engineaviatio:

• cost: $19.99
• type: Fixed
• transit: 4-10 Days
• class: Standard
• carrier: USPS
• service: USPS Ground Advantage

offer engineaviatio:

• started: April 27, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock

payments engineaviatio:

• credit card: Diners-club
• money order
• other
• wallet: Google-pay

seller engineaviatio:

• rating: 100.0%
• # reviews: 1157
• city: Scotts, Michigan

returns engineaviatio:

• policy: No Returns

general engineaviatio:

• condition: Used
• Aviation Parts Accessories > Engines > Engine Components

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