The Ultimate Guide to the OM617 Engine: Performance, Applications, and Buying Tips
The OM617 engine is one of the most revered diesel engines in the automotive world, known for its durability, efficiency, and remarkable performance. Developed by Mercedes-Benz, the OM617 was produced from 1974 to 1990 and has become a staple in various models, particularly in the U.S. during the 1980s. This guide aims to provide a comprehensive overview of the OM617 engine, including its types, applications, technical specifications, and tips for purchasing one. Whether you are a classic car enthusiast or a professional mechanic, this guide will serve as an invaluable resource.
Comparison of OM617 Engine Types and Applications
| Engine Type | Configuration | Power Output | Applications | Notable Features |
|---|---|---|---|---|
| OM617.950 | Inline 5 | 80-88 hp | W123, W126, Geländewagen | Naturally aspirated, known for reliability. |
| OM617.951 | Inline 5 | 111-121 hp | W116, W123 | Turbocharged, improved power and torque. |
| OM617.952 | Inline 5 | 125 hp | W123, W126 | Most powerful variant, designed with enhanced fuel efficiency. |
| OM617 A | Inline 5 | Varies | Various custom applications | Original turbo variant, often used in custom builds and swaps. |
Understanding the OM617 Engine: A Detailed Overview
History and Development
The OM617 engine was designed to cater to the growing demand for reliable diesel engines in the 1970s and 1980s. The engine features a cast-iron cylinder block and a two-row timing chain, ensuring longevity and performance. Over the years, several modifications were made, enhancing its power output and efficiency.
Key Features
The OM617 engine is known for its robust design and simple mechanics. It features:
– A pre-chamber diesel power unit
– A Bosch M injection pump
– A two-row timing chain
– A cast-iron cylinder head
Applications in Vehicles
The OM617 engine was used in various Mercedes-Benz models, including:
– W123: Celebrated for its reliability and ease of maintenance.
– W126: Known for luxury and performance.
– Geländewagen (G-Wagen): Renowned for off-road capabilities.
This engine’s versatility has made it a popular choice in the custom vehicle community, with many enthusiasts opting for swaps and modifications.
Performance Characteristics
Fuel Efficiency
The OM617 engine is particularly lauded for its fuel efficiency. Depending on the model and driving conditions, owners report fuel economy figures ranging from 25 to 30 miles per gallon. This efficiency, combined with its long lifespan, makes it an attractive option for both classic car collectors and daily drivers.
Power and Torque
With power outputs ranging from 80 to 125 hp, the OM617 provides adequate performance for various applications. The turbocharged variants, such as the OM617.951 and OM617.952, deliver enhanced torque, making them suitable for heavier vehicles and towing.
Reliability
One of the most significant selling points of the OM617 engine is its reliability. Many engines have been known to exceed 1,000,000 kilometers with proper maintenance, making it a favorite among enthusiasts who value longevity.
Buying Tips for the OM617 Engine
Condition Assessment
When purchasing an OM617 engine, assessing its condition is crucial. Look for the following:
– Signs of oil leaks
– Rust or corrosion on the engine block
– Excessive wear on belts and hoses
Documentation
Ensure that the seller provides proper documentation, including service history and any modifications made to the engine. This information can help gauge the engine’s reliability and expected performance.
Price Range
The pricing for OM617 engines can vary widely. For example, a well-maintained engine may be priced around €3,500 at sites like superturbodiesel.com or $4,165 at mbz4x4.com. Always negotiate and consider shipping costs when buying from international sellers.
Where to Buy
Consider reputable sources when looking for OM617 engines. Websites such as:
– mbz4x4.com: Known for high-quality rebuilt engines.
– mbzparts.com: Offers original equipment engines.
– www.adsitco.com: Features professionally rebuilt engines.
Technical Comparison of OM617 Engine Variants
| Feature | OM617.950 | OM617.951 | OM617.952 |
|---|---|---|---|
| Configuration | Inline 5 | Inline 5 | Inline 5 |
| Turbocharged | No | Yes | Yes |
| Power Output | 80-88 hp | 111-121 hp | 125 hp |
| Torque | 170 Nm | 240 Nm | 250 Nm |
| Applications | W123, W126 | W116, W123 | W123, W126 |
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Conclusion
The OM617 engine remains a celebrated choice for enthusiasts and collectors alike due to its impressive reliability, efficiency, and performance. Understanding the different variants and their applications can greatly aid in making an informed purchasing decision. Whether you are looking to restore a classic Mercedes or swap an engine for a custom build, the OM617 is a robust option that stands the test of time.
FAQ
What is the OM617 engine?
The OM617 is a 3.0-liter inline 5-cylinder diesel engine produced by Mercedes-Benz from 1974 to 1990, known for its durability and efficiency.
Which vehicles were equipped with the OM617 engine?
The OM617 engine was used in various Mercedes-Benz models, including the W123, W126, and Geländewagen.
What are the power outputs of the OM617 engine?
Power outputs range from 80 hp in the OM617.950 variant to 125 hp in the OM617.952 variant.
Is the OM617 engine reliable?
Yes, the OM617 engine is known for its reliability, with many examples exceeding 1,000,000 kilometers with proper maintenance.
Where can I buy an OM617 engine?
You can purchase an OM617 engine from reputable sources like mbz4x4.com, mbzparts.com, and superturbodiesel.com.
What should I check when buying an OM617 engine?
Check for oil leaks, rust, wear on belts and hoses, and request service history documentation.
What is the price range for an OM617 engine?
Prices can vary, typically around €3,500 or $4,165, depending on condition and seller.
Can I modify the OM617 engine?
Yes, many enthusiasts modify the OM617 engine for increased performance, including turbocharging and other upgrades.
What is the fuel economy of the OM617 engine?
Owners report fuel economy figures ranging from 25 to 30 miles per gallon, depending on driving conditions.
What makes the OM617 engine popular among enthusiasts?
Its combination of reliability, efficiency, and performance, along with its historical significance in classic Mercedes-Benz models, makes it a favorite among car enthusiasts.
