PRATT WHITNEY 9903 Cam R-985

( Brand: Pratt Whitney ), ( Manufacturer Part Number: 9903 ), ( Part Type: Cam ), ( Modified Item: No )

Review PRATT WHITNEY 985 Cam

The R-985 Pratt & Whitney Wasp Junior engine, specifically model CAM 9903, is a remarkable aviation powerplant with a rich history and impressive performance characteristics. This engine is a part of the Wasp series, which has been a staple in the aviation industry since its introduction in the 1930s.

The R-985 CAM 9903 is a 14-cylinder, two-row, air-cooled radial engine. It is known for its robust design, reliability, and high power output. The engine features a displacement of 2,770 cubic inches (45.4 L) and has a bore and stroke of 5.25 inches (133.4 mm) by 5.75 inches (146.1 mm), respectively. The R-985 is capable of delivering up to 1,600 horsepower at 2,700 RPM, making it a powerful choice for medium-sized aircraft.

One of the standout features of the R-985 CAM 9903 is its simplicity and ease of maintenance. The engine's air-cooled design allows for easy access to internal components, reducing downtime and maintenance costs. The engine is also equipped with a two-speed supercharger, which provides excellent power at high altitudes.

The R-985 CAM 9903 is a versatile engine that has been used in a wide range of aircraft, including the North American B-25 Mitchell bomber, the Douglas DC-3 airliner, and the Lockheed P-38 Lightning fighter. Its durability and reliability have made it a favorite among aviation enthusiasts and collectors.

In conclusion, the R-985 Pratt & Whitney Wasp Junior CAM 9903 is a testament to the ingenuity and innovation of aviation engineers in the mid-20th century. Its powerful performance, simplicity, and reliability continue to make it a sought-after engine for vintage aircraft restorations and enthusiast projects.

The Pratt & Whitney R-985 was a popular radial engine produced from the 1930s to the 1950s. The specific model you mentioned, the Pratt Whitney R-985 Cam 9903, is a high-compression version of the R-985 engine. Here are some pros and cons of buying this engine:

1. Reliability: The R-985 engine is known for its durability and reliability. It has a long service life and requires minimal maintenance, making it a cost-effective choice in the long run.

2. Power: The Cam 9903 version offers increased power compared to the standard R-985, which can be beneficial for aircraft with higher performance requirements.

3. Availability: As a widely used and well-maintained engine, spare parts and support are readily available.

1. Weight: Radial engines are generally heavier than inline engines, which can impact the aircraft's performance and fuel efficiency.

2. Complexity: Radial engines have more moving parts than inline engines, which can lead to more frequent maintenance and potential issues.

3. Fuel Consumption: Radial engines can consume more fuel compared to inline engines, which can increase operating costs.

The Pratt & Whitney R-985 Cam 9903 is a reliable and powerful engine with a long service life. However, it is heavier and has higher fuel consumption compared to inline engines. If you are looking for an engine with a proven track record of reliability and power, the R-985 Cam 9903 could be a good choice, provided you are willing to accept its higher weight and fuel consumption. However, it is crucial to thoroughly inspect any used engine before purchasing to ensure its condition and avoid costly repairs.

If you are interested in the R-985 Cam 9903 engine, I would recommend purchasing it from a reputable supplier with a strong track record of providing quality engines. Additionally, ensure that you obtain a detailed service history of the engine and have it inspected by a qualified mechanic before installation. This will help ensure that the engine is in good condition and will provide reliable service for many years to come.

Details:

Pratt Whitney R-985 cam P/N 9903 in excellent condition.

part #: 9903 price

• $27.50

specifications engineaviatio:

• brand: Pratt Whitney
• mpn: 9903
• part type: Cam
• modified item: No

Shipping engineaviatio:

• type: Calculated
• handling: 2 days

Ratings:

1. Outstanding Seller! Product as advertised! Great Communications! 07-18-18
2. Easy, pleasant transaction, Fast payment. 06-25-18
3. Perfect 04-27-18
4. Great Seller Communication is top notch. Product is perfectly described 04-14-18
5. Thank you for an easy, pleasant transaction. Excellent buyer.. 08-06-18

Returns engineaviatio:

• policy: no returns

Offer engineaviatio:

• Started: August 12, 2018, 11:45 am
• best offer: true
• Sold: 0
• bids: 0
• quantity: 1

Seller engineaviatio:

• city: Annapolis, Maryland
• zipcode: 21401

Payments engineaviatio:

• MOCC

General engineaviatio:

• condition: Used
• in stock: Yes
• motors > parts accessories > aviation parts accessories motors > engines aviation parts accessories

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