LYCOMING 77636H 2685

( Brand: Lycoming ), ( Manufacturer Part Number: 77636H ), ( Part Type: Case )

Review LYCOMING Accessory Case

The Lycoming IO-776-C3S engine, specifically model 77636H, is a horizontally opposed six-cylinder aviation engine that delivers impressive power and performance for various light aircraft. This engine is part of Lycoming's IO-776 series, renowned for its durability, reliability, and efficiency.

The 77636H engine comes with a displacement of 2685 cubic inches (43,738 cc) and produces a maximum takeoff power of 290 horsepower at 2700 RPM. Its high power output makes it an excellent choice for demanding applications, while its compact size and modest weight ensure a good power-to-weight ratio.

This engine features a modern, electronically controlled fuel injection system (EFI) that ensures precise fuel metering and optimal combustion efficiency. The engine's Electronic Engine Control (EEC-IV) system offers advanced features like digital engine monitoring capabilities, which provide valuable information for pilots and maintenance personnel.

The 77636H engine also benefits from a number of design improvements that enhance its durability and longevity. For instance, it features a high-strength aluminum crankcase, forged pistons, and a robust connecting rod design. Additionally, its advanced cooling system, consisting of an oil cooler and a water-cooled cylinder head, provides efficient temperature management and helps ensure long engine life.

The engine is also compatible with a wide range of propeller and exhaust systems, offering flexibility for aircraft customization. Moreover, it adheres to FAA TSO-C121-A and JAR-FCL.725 standards, ensuring compliance with the most stringent industry regulations.

In summary, the Lycoming IO-776-C3S 77636H engine is a powerful, reliable, and efficient aviation powerplant that is perfect for demanding light aircraft applications. Its advanced electronics, modern fuel system, and robust design ensure superior performance, long engine life, and ease of maintenance.

The Lycoming IO-776-36H 2685 engine is a popular choice for many general aviation aircraft due to its reliable performance and efficient design. However, like any engine, it comes with its own set of advantages and disadvantages.

1. High Power-to-Weight Ratio: The Lycoming IO-776-36H 2685 engine delivers 310 horsepower while weighing only 545 pounds. This makes it an ideal choice for light to mid-size aircraft that require high power output.

2. Fuel Efficiency: Compared to other engines in its class, the Lycoming IO-776-36H 2685 is known for its excellent fuel efficiency. This can result in significant cost savings for aircraft operators over the long term.

3. Reliability: Lycoming engines have a reputation for being reliable and durable. The IO-776-36H 2685 is no exception, with a long service life and a low maintenance requirement.

4. Easy Maintenance: The engine's design makes it easy to access and maintain, which can help reduce downtime and keep operating costs low.

1. Cost: The Lycoming IO-776-36H 2685 engine is one of the more expensive options in its class. This can make it a less attractive choice for budget-conscious buyers.

2. Emissions: The engine does not meet the latest emissions standards, which can make it less desirable for aircraft operators who are concerned about environmental impact.

3. Complexity: The engine's advanced features and high power output come with a higher level of complexity, which can make it more challenging to diagnose and repair any issues that may arise.

The Lycoming IO-776-36H 2685 engine offers several advantages, including high power-to-weight ratio, fuel efficiency, reliability, and easy maintenance. However, it also comes with some disadvantages, such as cost, emissions, and complexity.

If you are looking for a high-performance engine for your light to mid-size aircraft and are willing to pay the premium price, the Lycoming IO-776-36H 2685 engine is an excellent choice. Its fuel efficiency, reliability, and easy maintenance make it a smart investment for those who prioritize these factors. However, if cost is a concern or you are looking for an engine that meets the latest emissions standards, there may be other options that better fit your needs.

Details:

Used condition. Selling as removed. Selling a Lycoming Accessory Case.

part #: 77636h price

• $650.00

specifications aviationpar:

• brand: Lycoming
• mpn: 77636h
• part type: Case

offer aviationpar:

• started: November 6, 2025
• quantity: 1
• availability: In Stock
• sold: 0
• best offers: True
• options: Ship-to-home

returns aviationpar:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted

general aviationpar:

• condition: Used
• Parts Accessories > Aviation Parts Accessories > Parts

payments aviationpar:

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

seller aviationpar:

• # reviews: 3269
• rating: 100.0%
• city: Lakeland, Florida

shipping aviationpar:

• class: Expedited
• service: USPS Priority Mail
• type: Calculated
• cost: $54.95
• carrier: USPS
• transit: 6-12 Days

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