Ultimate Guide to the BMW S50 Engine: Performance, Price, and Comparisons
The BMW S50 engine is a notable piece of automotive engineering, celebrated for its performance and reliability. This guide will delve into the specifications, applications, and pricing of the S50 engine, comparing it to its competitors and providing insights into its performance features. Whether you’re considering a purchase or simply wish to understand more about this iconic engine, this comprehensive resource will provide you with all the information you need.
Comparison of BMW S50 Engine Types
| Engine Type | Displacement | Power Output | Torque | Application |
|---|---|---|---|---|
| S50B30 | 3.0L | 282 hp | 239 lb-ft | E30 M3 |
| S50B32 | 3.2L | 321 hp | 258 lb-ft | E36 M3 |
| S50B32 Euro | 3.2L | 321 hp | 258 lb-ft | Z3 M |
| S50B30 USA | 3.0L | 240 hp | 225 lb-ft | U.S. Spec E30 M3 |
Overview of the S50 Engine
The S50 engine series, produced by BMW, comes in various configurations, each tailored for specific performance needs. The S50B30 and S50B32 engines are particularly well-known for their application in the BMW M3 models. The S50B32 variant includes advanced features such as individual throttle bodies and a higher compression ratio, contributing to its impressive performance metrics.
Key Features
- Construction: The S50 engine features a lightweight aluminum block and head, improving power-to-weight ratio.
- Valvetrain: Equipped with dual overhead camshafts (DOHC) and a variable valve timing system, enhancing performance across the RPM range.
- Fuel System: Utilizes high-flow fuel injectors and an efficient intake manifold design for optimal air-fuel mixture.
Performance Insights
The S50 engines are revered for their high-revving nature and strong torque delivery, making them a favorite among enthusiasts. The S50B32, for instance, reaches a redline of 7,600 RPM and delivers a thrilling driving experience, especially in track settings.
Reliability and Maintenance
BMW engines are known for their durability, but the S50 series can experience issues if not properly maintained. Common problems include oil leaks from the valve cover gasket and VANOS unit failures. Regular maintenance, including oil changes and timing adjustments, can mitigate these issues and prolong engine life.
Pricing Information
Pricing for the S50 engine varies significantly based on condition, mileage, and configuration. Here’s a general overview:
- S50B30: Prices typically range from $3,000 to $6,000 USD for used engines.
- S50B32: Generally priced between $5,000 and $10,000 USD, depending on modifications and condition.
- Rebuild Kits: Complete engine rebuild kits from suppliers like Metric Mechanic can cost anywhere from $2,000 to $5,000.
Competitor Comparison
When comparing the S50 engine to its contemporaries, such as the M52 and S54 engines, it’s important to note the differences in performance and reliability. The S54, for example, offers more advanced technology and higher power output, but may come at a higher maintenance cost.
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Conclusion
The BMW S50 engine remains a benchmark for performance and engineering excellence. With various configurations offering distinct advantages, it continues to be a popular choice for enthusiasts and builders. Understanding its specifications, pricing, and applications can help prospective buyers make informed decisions.
FAQ
What is the difference between the S50B30 and S50B32?
The S50B30 has a displacement of 3.0 liters with a power output of 282 hp, while the S50B32 has a larger 3.2-liter displacement, producing 321 hp. The latter features improved technologies like individual throttle bodies.
How much does an S50 engine typically cost?
Prices for S50 engines range from $3,000 to $10,000 USD, depending on the variant and condition.
What vehicles used the S50 engine?
The S50 engine was primarily used in the E30 and E36 M3 models, as well as the Z3 M.
Are S50 engines reliable?
Yes, S50 engines are generally reliable, but they require regular maintenance to avoid issues such as oil leaks and VANOS failures.
What are common problems with the S50 engine?
Common issues include oil leaks, VANOS unit failures, and overheating if not properly maintained.
Can I swap an S50 engine into a non-M BMW?
Yes, many enthusiasts successfully swap S50 engines into non-M models like the E30 or E36 for improved performance.
What kind of fuel does the S50 engine require?
The S50 engine runs best on premium unleaded fuel to achieve optimal performance.
Is it worth rebuilding an S50 engine?
If properly maintained, the S50 engine can offer excellent performance and value, making a rebuild worthwhile for many enthusiasts.
How can I find parts for my S50 engine?
Parts can be found through specialized suppliers such as BimmerWorld or Metric Mechanic.
What are the advantages of the S50 over newer BMW engines?
The S50 is celebrated for its simplicity and mechanical reliability, appealing to enthusiasts who appreciate a raw and engaging driving experience.
