FL350R & FL400R Smart Carb SC3 Carburetor (36/38/40mm)
Important Ordering & Fitment Notes:
- Lead Time: Carburetors are custom built/pre-tuned per application and typically ship within 1 to 2 weeks from order placement.
- Fuel Delivery Setup: If you are running a gravity-fed tank or an electric fuel pump, you must notify us via our contact form after placing your order so the internal float needle and seat can be calibrated specifically for that fuel pressure.
- Intake & Elbow Fitment: The stock FL350 carburetor is 32mm. Larger SC3 carburetors (36mm/38mm) will not fit into the stock intake manifold. We recommend pairing your carburetor with our dedicated FL350 SmartCarb Intake & Airbox Elbow Adapter Kit.
- Metering Rod Adjustments: For a walkthrough on how to swap or adjust your metering rod, watch this instructional video.
- "T" Check Valve: The factory pulse line "T" check valve is not required for this carburetor, though it will operate properly if left in place.
21st-Century Fuel Delivery: The Jetless SmartCarb SC3
Tired of tearing your carburetor apart to swap jets every time the elevation or temperature changes? Worried your 2-stroke air/fuel mixture is running dangerously lean or excessively rich? The SmartCarb SC3 brings fuel delivery into the modern era with a revolutionary jetless single-circuit design that automatically compensates for ambient air density and altitude changes.
Every SmartCarb ships pre-tuned with baseline settings tailored to the application specified in your order. Enjoy instant throttle response, increased power, substantially better fuel economy, and pure "set-it-and-forget-it" convenience on your vintage Honda.
Carburetor Sizing Recommendations
- 28mm: Honda Odyssey FL250 engines
- 36mm: Stock to mildly modified Honda Odyssey FL350R & Pilot FL400R engines
- 38mm: Ported, piped, or high-RPM build FL350R & FL400R engines
Upgrading Your FL350 Intake & Airbox Connection
Because the stock FL350 intake manifold is built for a 32mm carburetor, stepping up to a 36mm or 38mm SmartCarb requires an enlarged intake and airbox connection. While the original rubber airbox elbow can sometimes be forced over larger spigots, the cleanest, most reliable installation is achieved with our all-in-one adapter solution.
SmartCarb SC3 installed using the Oddball ORV Intake & Elbow Adapter Kit.
Check out the full kit here: FL350 SmartCarb Intake & Airbox Elbow Adapter Kit.
Remote Choke Cable Setup
The Honda Odyssey FL350R and Pilot FL400R utilize a dash/seat-mounted remote choke lever. The optional Remote Choke assembly allows you to retain this in-cockpit convenience. If you elect not to run the remote choke, you will need to manually lift the choke plunger on the carburetor body prior to cold starts. Note: Minor cable adaptation or custom routing may be required depending on your exact cockpit cable configuration.
Key Performance Benefits & Features
- More Power: Delivers up to 10% gains in peak horsepower through improved atomization.
- Extended Range: 25% to 30% improvement in fuel economy over conventional carburetors.
- True Air Density Compensation: Maintains precise air/fuel ratios regardless of elevation or weather fluctuations.
- Tool-Less External Tuning: Make fine clicker adjustments by hand in seconds without disassembly or jets.
- Sealed, Internally Vented Design: Zero fuel spillage even on rough terrain, steep dune angles, or hard landings.
- Premium Billet Construction: Precision CNC-machined in the USA from aircraft-grade aluminum.
- Reduced Emissions: Produces a cleaner 30% to 50% reduction in unburned hydrocarbons.
Optional Throttle Position Sensor (TPS): A TPS add-on is available for custom builds utilizing modern 3D ignition mapping, electronic oil injection, servo-controlled power valves, or advanced programmable aftermarket ECUs.
| Origin | Aftermarket |
|---|---|
| Condition | New |
| ATV Make | Honda |
| ATV Model | FL350R, FL350R - Rotax, FL400R, FL400R - Rotax, Super Light |
| Manufacturer | SmartCarb |
| Height | 12 |
| Width | 12 |
| Depth | 12 |
