The 12-valve Cummins engine holds a legendary status among diesel enthusiasts. Known for its robust design, incredible longevity, and impressive power output, it's no surprise that crate motors based on this design are highly sought after. But what exactly makes a 12-valve Cummins crate motor so desirable, and what should you consider before purchasing one? This comprehensive guide delves into everything you need to know.
What is a 12-Valve Cummins Crate Motor?
A 12-valve Cummins crate motor is a completely assembled engine, ready to be installed in a vehicle. "Crate" refers to the shipping container it arrives in. Unlike buying individual parts and assembling an engine yourself, a crate motor offers convenience and often comes with a warranty. These engines are typically based on the legendary Cummins B series engines, famous for their simplicity, durability, and relatively straightforward maintenance. They are often rebuilt or remanufactured to near-factory specifications, offering a cost-effective alternative to sourcing and building a motor from scratch.
What are the Benefits of a 12-Valve Cummins Crate Motor?
Several key advantages make 12-valve Cummins crate motors a popular choice:
- Reliability: The 12-valve design is renowned for its ruggedness and long lifespan. Properly maintained, these engines can last for hundreds of thousands of miles.
- Power: These engines produce substantial torque, making them ideal for heavy-duty applications, towing, and off-road use.
- Simplicity: Compared to modern electronically controlled engines, the 12-valve is mechanically simpler, making diagnosis and repairs easier.
- Parts Availability: Parts for these engines are readily available, even for older models.
- Community Support: A large and active community of enthusiasts readily offers support, advice, and modifications.
- Cost-Effectiveness: While the initial investment might be significant, the long lifespan and reliability can make it a cost-effective solution in the long run, especially when compared to repeated repairs on a less durable engine.
What are the Different Types of 12-Valve Cummins Crate Motors?
The specific configurations of available 12-valve Cummins crate motors can vary depending on the supplier. You'll encounter different displacement options (e.g., 5.9L, 6BT), power ratings, and potentially various levels of rebuild quality. Some suppliers may offer custom-built crate motors to meet specific performance needs. Always clarify the specifications with the vendor before making a purchase.
What Should I Look for When Buying a 12-Valve Cummins Crate Motor?
Buying a crate motor involves careful consideration. Here's what to look for:
- Reputation of the Supplier: Choose a reputable supplier with a proven track record and positive customer reviews.
- Warranty: Inquire about the warranty offered and understand its terms and conditions.
- Engine Specifications: Verify the engine's horsepower, torque, displacement, and any other relevant specifications to ensure they meet your needs.
- Rebuild Quality: Ask about the rebuild process, the quality of parts used, and any testing performed on the engine.
- Installation Support: Some suppliers may offer installation support or resources, which can be invaluable.
Where Can I Find a 12-Valve Cummins Crate Motor?
Various sources offer 12-valve Cummins crate motors, including specialized engine rebuilders, performance parts suppliers, and online marketplaces. Thorough research is vital to ensure you are dealing with a trustworthy vendor.
How Much Does a 12-Valve Cummins Crate Motor Cost?
The price of a 12-valve Cummins crate motor can vary significantly based on the engine's condition, specifications, and supplier. Expect a substantial investment compared to a gasoline engine. The long-term value proposition, however, can justify the higher initial cost.
Are there different horsepower options available?
Yes, while the base engine specifications remain consistent, the power output can be modified through various upgrades, such as turbos, injectors, and engine tuning. This means you can find 12-valve crate motors offering a range of horsepower depending on the modifications applied during the rebuild or by the end-user post-installation.
What kind of maintenance is required for a 12-Valve Cummins crate motor?
Regular maintenance is key to maximizing the lifespan and performance of your 12-valve Cummins. This includes regular oil changes, filter replacements (fuel, air, oil), and checking fluid levels. Consult your engine's specific maintenance schedule for detailed recommendations. Given the relative simplicity of this engine, many of these tasks are straightforward to perform.
This guide provides a comprehensive overview of 12-valve Cummins crate motors. Remember to always perform thorough research before making a purchase and choose a reputable supplier to ensure you receive a high-quality engine that meets your needs and expectations.
