ROYZE Carb Su Carburetor Nitrophyl Float 378-380

( Brand: Royze ), ( Type: Float Chamber Lid ), ( Manufacturer Part Number: 378380 )

Review ROYZE Austin Healey Tri Carb Early Su Carburetor Nitrophyl Float fits HS4

The Royce 378380 Austin Healey HS4 Carburetor Nitrophyl Float 378-380 is a high-performance carburetor designed specifically for the Austin Healey model cars. This carburetor is a four-barrel, downdraft design, which ensures optimal fuel-air mixture for superior engine performance.

The Nitrophyl float is a key feature of this carburetor, providing improved idling and throttle response. The Nitrophyl float is made of a unique material that offers superior resistance to fuel and oil, reducing wear and tear on the float and improving overall carburetor efficiency.

The HS4 carburetor is equipped with four 2-inch downdraft carburetor throttle bodies, which allow for precise fuel-air mixture adjustments. Each throttle body features a butterfly valve, which opens and closes in response to the driver's input on the accelerator pedal.

The carburetor also includes four 1 3/4-inch SU main jets, which are adjustable to fine-tune the fuel-air mixture for different driving conditions. The primary jets are also adjustable, allowing for further customization of the carburetor's performance.

The Royce 378380 Austin Healey HS4 Carburetor Nitrophyl Float 378-380 is designed to fit the Austin Healey model cars with ease. The carburetor comes with all necessary mounting hardware and instructions for installation. The carburetor body is made of high-quality aluminum, which is both lightweight and durable, making it an excellent choice for classic cars.

In summary, the Royce 378380 Austin Healey HS4 Carburetor Nitrophyl Float 378-380 is a high-performance, four-barrel carburetor designed specifically for the Austin Healey model cars. It features a Nitrophyl float for improved idling and throttle response, adjustable jets for fine-tuning fuel-air mixture, and a durable aluminum body. The carburetor is easy to install and comes with all necessary hardware and instructions.

Pros and Cons of buying a ROYZE 378380 Austin Healey HS4 Carburetor Nitrophyl Float 378-380

a. Authenticity: This carburetor is specifically designed for Austin Healey models, ensuring a perfect fit and optimal performance for these vehicles.

b. Nitrophyl Float: The Nitrophyl float design offers improved sealing and performance, making this carburetor an excellent upgrade from standard floats.

c. Easy Installation: Many users report that the installation process is relatively straightforward, especially for those with some mechanical experience.

d. Enhanced Performance: The ROYZE 378380 carburetor is known to provide improved throttle response, idling stability, and overall engine performance.

a. Price: Compared to some aftermarket or used alternatives, the ROYZE 378380 carburetor can be quite expensive.

b. Requires Skills and Tools: Installing this carburetor may not be a DIY project for everyone, especially if you lack the necessary skills and tools.

c. Potential Leaks: As with any carburetor installation, there is a risk of leaks, which may require additional time and effort to diagnose and repair.

The ROYZE 378380 Austin Healey HS4 Carburetor Nitrophyl Float 378-380 comes with its advantages, such as improved performance, perfect fit for Austin Healey vehicles, and the Nitrophyl float design. However, it also has disadvantages, including a higher price point, the need for mechanical skills for installation, and the potential for leaks.

If you are an Austin Healey owner looking for enhanced engine performance and are willing to invest in a high-quality, specifically designed carburetor, the ROYZE 378380 carburetor could be an excellent choice. However, if you are on a budget or lack the necessary mechanical skills for installation, you might want to consider alternative options or seek professional assistance.

part # 378380 price

• $22.00

specifications carbcaddie:

• for models: Hs4
• for makes: Austin, Healey
• brand: Royze
• type: Float Chamber Lid
• manufacturer part number: 378380

payments carbcaddie:

• other
• wallet: Paypal
• credit card: Visa

seller carbcaddie:

• rating: 99.4%
• # reviews: 9046

general carbcaddie:

• Car Truck Parts Accessories > Air Fuel Delivery > Carburetor Parts
• condition: New

returns carbcaddie:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

shipping carbcaddie:

• transit: 5-11 Days
• type: Fixed
• cost: $5.50
• service: USPS Ground Advantage
• class: Standard
• carrier: USPS

offer carbcaddie:

• started: February 19, 2026
• availability: In Stock
• quantity: 2
• best offers: True
• sold: 0
• options: Ship-to-home

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