TOYAN FS-L400 14cc Inline 4 Cylinder 4 Stroke Nitro Engine DIY Assembly Kit for RC Models
Hero Section: The Symphony of Four Cylinders
There is a sound that defines automotive passion: the aggressive, rhythmic scream of a high-performance inline-four engine hitting the redline. The TOYAN FS-L400 isn't just a model; it is a mechanical masterpiece that puts that power in the palm of your hand. This is your chance to go beyond simple assembly. You are building a 14cc, 3.05 horsepower beast from the ground up. Whether you are looking to power a 1:8 scale RC supercar or simply want the ultimate desktop machine to showcase your engineering prowess, the FS-L400 delivers an experience that is raw, visceral, and undeniably authentic.
Why Choose the TOYAN FS-L400 Kit?
- True DIY Engineering: This is the "KIT" version, meaning the journey is half the fun. You will assemble hundreds of precision metal parts, understanding every tolerance and clearance. It is the ultimate test of patience and skill, rewarding you with a running engine you built yourself.
- Race-Ready Performance: With a long-stroke design and a 180-degree crankshaft, this engine is built for torque and speed. It features a classic 1-3-4-2 firing order, delivering smoother acceleration and a spine-tingling response up to 13,500 RPM.
- Quad-Carburetor Precision: Just like a vintage racing engine, the FS-L400 features four independent carburetors. This allows for granular tuning of the air-fuel mixture, giving you complete control over the engine's "breathing" and throttle response.
- The Ultimate Bonding Project: Forget screens and video games. Building this engine is a bridge between generations. It’s the perfect project for a father and son to tackle together, passing down the knowledge of internal combustion mechanics through hands-on learning.
Technical Highlights: A Masterclass in Miniaturization
- Integrated Water Cooling: Heat is the enemy of performance. The FS-L400 features a built-in high-precision gear pump that circulates coolant through the engine block. This active cooling system ensures stable performance even during extended run times.
- Dual Synchronous Pulleys: To handle high RPMs without failure, the timing structure uses dual synchronous pulleys. This greatly reduces the risk of "gear jumping," ensuring the valves open and close with absolute precision.
- Independent Valve Design: The alloy rocker arms and independent intake/exhaust design mimic full-scale automotive engineering, ensuring accurate valve timing and efficient combustion.
- Electric Start System: Gone are the days of frustrating pull-starts. The engine comes equipped with a high-torque brushed starter motor, making ignition as simple as pressing a button (starter kit electronics sold separately).
Specifications
- Model: TOYAN FS-L400 (KIT Version)
- Type: Inline Four-Cylinder, Four-Stroke, Water-Cooled Nitro Engine
- Displacement: 14cc (3.5cc x 4)
- Bore: 16.60mm
- Stroke: 17.00mm
- Power Output: 3.05ps
- RPM Range: 3,200 - 13,500 RPM
- Dimensions: 121.05 x 43.67 x 90.00mm
- Weight: 1250g
- Fuel Requirement: Methanol Model Fuel (20-25% Nitromethane)
- Lubrication: Mixed Fuel (Crankshaft) / Grease (Camshaft)
- Package Includes: Engine Parts Kit, Electric Starter Motor, Manual.
- Required Accessories (Not Included): Glow Plugs (x4), Ignition Module, ESC/Battery for Starter, Radiator, Fuel Tank, Fuel Lines, Engine Base.
Usage Scenario: The First Start
The assembly is complete. The engine sits mounted on its stand, gleaming in red and silver. You check the fuel lines, ensuring the "Y" splitter is feeding all four carbs. You apply power to the glow plugs. With a deep breath, you engage the starter motor. The engine coughs, then catches—settling into a deep, throaty idle that vibrates through the table. You blip the throttle, and the four cylinders roar in unison. It’s a moment of pure mechanical triumph.
Important Tips from the Workshop
- Fuel Matters: This is a 4-stroke engine. You must use quality model fuel with 20-25% Nitromethane content. Higher nitro content can alter ignition timing and damage the engine.
- Lubrication is Different: Unlike 2-stroke engines, the FS-L400 has no oil sump. The crankshaft is lubricated by the oil in the fuel, but you must apply red grease to the camshafts in the cylinder head manually.
- Piston Rings: Don't panic if you can't find the piston rings in the bag. To ensure quality, the factory pre-installs the piston rings into the cylinder block for you.
- Fuel Plumbing: Since there is one fuel tank but four carburetors, you will need to purchase T-connectors or a fuel distribution block to ensure equal fuel pressure to all cylinders.
- What You Need to Buy: This is a bare engine kit. To run it, you will need to separately purchase a radiator, a mounting base, glow plugs, and an ignition module.
Customer Support
Building a 4-cylinder engine is a complex and rewarding task. If you need assistance with tuning, assembly advice, or sourcing the correct accessories, please contact our expert support team at service@helloworld7.com.
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