JRC 30MM CARBURETORS – PWK / KEIHIN – REPLACE AMAL 930 AND MIKUNI
JRC Carburetor | These JRC Carburetors are 30mm, and are a great, economical alternative to Amal 930 carburetors or Mikuni carburetors. These are a direct bolt on replacement for your stock Amal, and will use your stock throttle cable. These feature a chrome slide for smoother operation and less wear, as well as an integrated choke lever on the body of the carburetor for easy starting.These are also known as PWK or Keihin carburetors, they are adapted for use on British motorcycles by JRC Engineering. These 30mm carbs are supplied with with a 130 main jet and a 26 pilot jet installed and there is a 140 main and 35 pilot included in the box as well. These 30mm models are great for your British twin cylinder motorcycle. For twin carburetor models such as Triumph Bonneville or BSA A65 you would want to use a P26-130, comparable to an Amal 190 main jet. For single carburetor bikes like the Triumph TR6 Tiger, you would want to use a P26-140 main let, comparable to an Amal 230 main jet. This would also work great on your BSA B40 or B50.
We have a wide arrange of jets available from the equivalent of an Amal 170 – 240 in stock. You can find installation instructions and a parts list for JRC Flatside Carburetors here. Sold Individually.
Note: There are no returns on carburetors, electrical items, full frames, hardtails or made-to-order items (such as magnetos) unless there is a manufacturer’s defect.
Key Features of JRC 30mm Carburetors | Buy JRC Carburetor Online
- PWK/Keihin Design: These carburetors are based on the Keihin PWK design, which is known for its reliable performance, smooth throttle response, and easy tuning.
- Direct Replacement: They are designed to replace the Amal 930 and Mikuni carburetors without extensive modification, making them a straightforward upgrade.
- Improved Performance: The JRC carbs are generally more efficient, offering better throttle response, more consistent idle, and improved fuel efficiency compared to the older Amal or Mikuni models.
- Ease of Tuning: These carbs typically have more accessible jets and components, which make fine-tuning easier, especially for different fuel grades or riding conditions.
- Choke and Idle Adjustments: The carburetors usually come with easy-to-use choke levers and idle screws, which improve cold starting and idle stability.
- Durability: Compared to Amal carburetors, which can wear out over time due to their softer materials, the JRC carburetors are made from more durable components, reducing the need for frequent replacements.
Benefits of Replacing Amal 930 or Mikuni | Buy JRC Carburetor Online
- Less Wear and Tear: Amal carburetors are known to wear out, especially the slides, causing poor running conditions over time. The JRC carburetors are designed to be more durable.
- Improved Cold Starts: The choke system in the PWK-style JRC carbs is more effective than in older Amal carbs, which often struggle in cold weather.
- Better Fuel Economy: Because of better atomization and fuel management, JRC carbs may improve fuel consumption compared to older carb designs.
- Tuning Flexibility: Amal carbs often require more frequent adjustments, while JRC carbs provide easier and more stable tuning options.
Installation Considerations:
- Manifold Compatibility: Ensure that the manifold or intake ports on your motorcycle can accommodate the 30mm carb. In some cases, adapters might be required.
- Jetting: Depending on the specific application, you may need to re-jet the carburetor to match the engine’s needs. This is especially true if you’re moving from an Amal or Mikuni setup to the JRC carb.
- Throttle Cable: You may need to modify or replace your throttle cable to suit the JRC carburetor setup.
By upgrading to JRC 30mm carburetors, riders of classic motorcycles often find that they gain a noticeable improvement in performance, reliability, and ease of maintenance compared to the original Amal 930 or Mikuni carbs.
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