WRA-31 WALBRO Carburetor

Review WALBRO Carburetor

The Walbro WRA-31 carburetor is a high-performance fuel delivery system designed for applications where precise fuel metering and exceptional power output are required. This carburetor is a 31mm quad-barrel design, meaning it features four separate barrels, each with its own fuel circuit and metering jet, enabling it to provide an optimal air-fuel mixture for each cylinder.

The WRA-31 is engineered with a unique design that ensures consistent performance under various operating conditions. It features a vacuum secondary system that utilizes a mechanical secondaries mechanism to provide an additional fuel boost under wide-open throttle conditions, improving overall power output and throttle response.

The carburetor's metering jets are adjustable, allowing the user to fine-tune the fuel mixture for their specific application. The primary jets are adjustable from 0.028 to 0.045 inches, while the secondary jets are adjustable from 0.045 to 0.062 inches. This level of adjustability provides the user with the ability to optimize the fuel mixture for their engine's specific requirements.

The WRA-31 is constructed of high-quality materials, including a billet aluminum body, brass fuel bowls, and stainless steel fuel needles and jets. This combination of materials ensures durability and resistance to corrosion, making the carburetor an excellent choice for high-performance applications.

Additionally, the WRA-31 features a smooth-operating accelerator pump, which ensures a consistent fuel supply to the engine during acceleration, reducing the likelihood of surging or stalling. The carburetor also includes a built-in air bleed system, making it easy to remove air bubbles from the fuel system for optimal performance.

The Walbro WRA-31 carburetor is a high-performance fuel delivery system that provides consistent fuel metering, exceptional power output, and the ability to fine-tune the fuel mixture for specific applications. Its durable construction, smooth-operating accelerator pump, and built-in air bleed system make it an excellent choice for high-performance applications where precise fuel metering is essential.

The Walbro WRA-31 carburetor is a popular aftermarket option for diesel engines, particularly those used in off-road vehicles and performance applications. Here are some pros and cons of buying this carburetor:

1. High-Performance: The WRA-31 is designed to provide superior fuel delivery for high-performance applications. It can support larger injector pumps and handle increased fuel demand.

2. Durability: This carburetor is built to last. It features a billet aluminum body, stainless steel components, and hard anodized fuel bowls.

3. Adjustability: The WRA-31 offers a wide range of adjustability, allowing users to fine-tune the fuel delivery for optimal engine performance.

4. Easy Installation: Compared to other high-performance carburetors, the WRA-31 is relatively easy to install. It uses standard mounting patterns and comes with all necessary hardware.

5. Good Customer Support: Walbro provides excellent customer support, including technical assistance and spare parts.

1. Cost: The WRA-31 is a more expensive option compared to stock or OEM carburetors.

2. Complexity: While the WRA-31 offers a lot of adjustability, this complexity can make it more difficult to set up and tune for some users.

3. Fuel Mileage: Some users have reported a decrease in fuel mileage when using the WRA-31, due to the increased fuel demand.

4. Maintenance: The WRA-31 requires more frequent maintenance compared to stock or OEM carburetors, due to its high-performance design.

In conclusion, the Walbro WRA-31 carburetor is an excellent option for those seeking high performance and durability from their diesel engine. However, its complexity and higher cost may make it less appealing to some users. Ultimately, the decision to purchase the WRA-31 depends on your specific needs, budget, and level of experience with carburetors.

If you are looking for a high-performance carburetor that can handle increased fuel demand and provide excellent durability, then the Walbro WRA-31 is a solid choice. However, if you are on a tight budget or prefer a simpler, more straightforward carburetor, then other options may be more suitable for you.

Recommendation: If you are in the market for a high-performance diesel carburetor and are willing to invest in a more complex, yet durable and adjustable option, then the Walbro WRA-31 is an excellent choice. However, if you are on a budget or prefer a more straightforward carburetor, consider other options or explore alternative solutions such as electronic fuel injection systems.

Details:

Had vintage scorpion sled and this came with it as a back up. Walbro vintage snowmobile carb. Please look at the pictures any questions just ask. WRA-31 stamped in the housing.

Do not know if it works.

specifications snowskirunn:

• brand: Walbro
• mpn: Wra-31
• part type: Carburetor

general snowskirunn:

• category: Snowmobile Parts > Skis Runners

returns snowskirunn:

• time: 30 days
• paid by: seller
• policy: returns accepted

seller snowskirunn:

• rating: 100.0%
• # reviews: 398
• city: stormville, new york

payments snowskirunn:

• other
• wallet: apple-pay
• credit card: discover

offer snowskirunn:

• sold #: 6
• prices: $30.00–$62.95
• item condition:
  • Used
  • New
• availability: in stock
• options: ship-to-home
• in stock #: 2
• started: may 24, 2026

shipping snowskirunn:

• carrier: usps
• type: fixed
• class: standard
• service: usps ground advantage
• transit: 5-11 days