CISON L4 OHV 20.5cc Inline 4-Cylinder 4-Stroke Water-Cooled Gasoline Engine Model Kit-Speed Up to 11500rpm

CISON L4-205-OHV 20.5cc Inline 4-Cylinder 4-Stroke Water-Cooled Gasoline Engine Model Kit for RC Cars-Speed Up to 11500rpm

CISON L4-205 OHV L4 Engine for Sale Now!
Early Bird Price: $849.99! Save 15% OFF when checking out.
Limited Deals till to March 11th,back to 10% OFF!

Product Information:

Immersive DIY Engine Building Experience:

Step into the fascinating world of miniature mechanical engineering with this L4 engine kit. Featuring hundreds of precision-crafted metal parts, this challenging yet rewarding project allows you to assemble your own unique L4 engine, experiencing the thrill of mechanical construction firsthand.

Compact Yet Powerful Micro Engine:

Designed with an ultra-compact structure, the L4 engine delivers exceptional power despite its small size. With a high-displacement design, OHV valve system, and long-stroke structure, it produces high torque output, outperforming other engines of the same size.

Sturdy & Stable Performance:

Equipped with an independent lubrication system and an external oil pump, ensuring optimal lubrication (mini oil filter recommended). The wet water-cooling circulation system effectively reduces engine temperature, extending operational time and lifespan for long-lasting, reliable performance.

Responsive Control & Thrilling Sound:

Features stainless steel intake and exhaust pipes with an aerodynamically optimized carburetor, making tuning effortless. The highly responsive throttle delivers smooth control, while the engine produces a deep, powerful exhaust note, creating an unforgettable auditory experience.

Premium Craftsmanship & Perfect RC Compatibility:

Constructed with CNC-machined metal, three-ring piston design, hardened cylinder liner, and reinforced crankshaft, ensuring superior durability. Its lightweight design makes it perfect for 1/8 and 1/14 scale RC crawlers, off-road trucks, and semi-trucks, acting as the ultimate powerhouse. A perfect gift for engine enthusiasts, model collectors, and RC hobbyists, this high-end engine is also an excellent alternative for nitro-powered RC cars.

Comparison: CISON L4-175 vs. CISON L4-205

Feature	CISON L4-175	CISON L4-205-OHV
Displacement	17.5cc	20.5cc (17% increase)
Valve Mechanism	OHV (Overhead Valve)	OHV (Overhead Valve)
Cylinders	Inline 4-cylinder	Inline 4-cylinder
Cylinder Diameter	16.7mm	18.5mm
Stroke	19.5mm	19mm (Slightly shorter, more stable performance)
RPM Range	1500 – 8000rpm	1800 – 11500rpm (Higher RPM, better for high performance)
Power Output	About 2.5 horsepower (ps)	About 3.6 horsepower (ps, 45% increase)
Cooling System	Water cooling	Water cooling
Starting Mode	Electronic starting	Electronic starting
Ignition Method	CDI Ignition	CDI Ignition
Lubrication System	Independent lubrication system	Improved independent lubrication system
Recommended Fuel	92# gasoline and above	92# gasoline and above
Recommended Oil	2T or 4T engine oil (10W50 recommended)	2T or 4T engine oil (10W50 recommended)
Suitable Models	Suitable for 1/10 RC models, light off-road trucks	Suitable for 1/8, 1/10 RC models, off-road trucks, tractors, boats, etc.
Product Dimensions	13.5 x 10.24 x 10.5 cm	13.5 x 10.2 x 10.5 cm
Product Weight	1300g	1300g
Package Dimensions	20 x 20 x 20 cm	20 x 20 x 20 cm
Package Weight	2200g	2000g
Recommended Age	14+ years	16+ years
Color	Red	Blue

 

More Details:

.Material: Metal
.Color: Blue + Black
.Brand: CISON
.Model: L4-205-OHV
.Product Form: KIT (Unassembled)
.Engine Type: Gasoline Internal Combustion Engine
.Valve Mechanism Type: OHV (Overhead Valve)
.Bore Diameter: 18.5 mm
.Stroke: 19 mm
.Displacement: 20.5cc
.Cylinders: Inline Four-Cylinder
.Cycle: Four-Stroke
.Speed Range: 1800-11500 rpm
.Power Output: Approx. 3.6ps
.Cooling Method: Water-Cooled
.Starting Method: Electric Start
.Ignition System: Dedicated CDI Ignition
.Spark Plug Type: 3/16-40 Thread Type (Imperial Thread)
.Lubrication Method: Independent Lubrication System
.Fuel Type: 92# or Higher Gasoline
.Oil Type: 2T/4T Oil, Recommended 10W50 Oil
.Starter Power Supply: 6-14V, Recommended 12V Lithium Battery
.Product Weight: 1300g
.Package Weight: 2000g
.Product Dimensions: 13.5 x 10.2 x 10.5cm
.Package Dimensions: 20 x 20 x 20cm
.Packing: Wooden Box
.Ages: 16+

Packing List:

.L4 Engine Parts Kit *1
.Instruction Manual *1

Note:

This engine product does not include a CDI igniter, spark plug, oil filter, water-cooling accessories, or base. Please strictly follow the instructions in the manual to ensure proper use and avoid damage caused by improper operation. If you have any questions during use, please feel free to contact us—we are committed to providing you with the best service.

Product Description: 

In November 2022, we introduced the CISON L4-175 OHV gasoline engine, and now we bring you its evolutionary upgrade—the L4-205 OHV gasoline engine. Compared to the previous L4 engine, this new model retains its unique miniature compact structure while continuing to feature standard electric start, a wet water-cooling system, and an independent lubrication system. The exterior has been redesigned with a blue valve cover and a black cylinder block, along with a newly designed classic exhaust pipe that gives the engine a visual resemblance to agricultural diesel engines. The transmission system has been upgraded from a belt pulley to a synchronous pulley, ensuring greater accuracy, smoother operation, and higher efficiency. Additionally, the piston ring design has been improved from a dual-ring setup to a three-ring configuration with an added oil ring, significantly enhancing sealing and emission performance while improving the engine’s stability and reliability. The displacement has been increased from 17.5cc to 20.5cc, resulting in more than a 15% boost in power output, making it even more compatible with RC car models. The L4-205 OHV gasoline engine will also be available in two versions: a KIT version and a fully assembled version.