98cc Gasoline Engine
$110.00
| Specification | Details |
|---|---|
| Engine Model | 156F / GX100 Compatible |
| Engine Type | 4-Stroke, OHV (Overhead Valve), Single Cylinder, Air-Cooled |
| Displacement | 98 cc |
| Horsepower | 2.8 – 3.0 HP @ 3600 RPM |
| Max. RPM | 3600 RPM |
| Net Torque | 4.2 – 4.4 ft-lbs @ 2500 RPM |
| Bore x Stroke | 56 mm x 38-40 mm |
| Compression Ratio | 8.5 : 1 |
| Ignition System | Transistorized Magneto Ignition (T.C.I.) |
| Starting System | Recoil Start (Pull Cord) |
| Lubrication System | Splash / Forced Splash |
| Governor System | Centrifugal Mechanical |
| Air Cleaner | Dual Element Type |
| Fuel Type | 87+ Octane Unleaded Gasoline |
| Fuel Tank Capacity | 0.77 – 1.6 L (0.8 – 1.7 US qt) |
| Oil Capacity | 0.37 – 0.40 L (0.4 US qt) |
| Shaft Rotation | Counter-Clockwise (from PTO shaft side) |
| Shaft Diameter | 5/8 in. (15.875 mm) |
| Shaft Length | Approx. 2.4 in. (60 mm) |
| Shaft Keyway | 3/16 in. |
| Mounting Pattern | 6.5″ x 3″ (165 mm x 76 mm) – Compatible with 6.5HP Clone engines |
| Dimensions (L x W x H) | 11.6″ x 12.0″ x 15.8″ (295 x 304 x 402 mm) |
| Dry Weight | 21 – 23.4 lbs (9.5 – 10.6 kg) |
98cc Gasoline Engine >> 98cc engine
This dependable 98cc gasoline engine provides solid performance for go-karts, minibikes, and other small vehicle applications. Built with quality components and engineered for reliability, it’s designed to deliver consistent power when you need it.
Our Coleman Torque Converter Kit will fit on this engine for more torque.
98cc 3 HP OHV Horizontal Shaft Engine – 4-Stroke Gas Motor for Mini Bikes & Go-Karts
Product Short Description:
Power your next project with this reliable 98cc 4-stroke gasoline engine. Delivering 3 horsepower at 3600 RPM, this compact powerhouse is the perfect replacement or upgrade for mini bikes, go-karts, and small utility equipment. Featuring an OHV design, recoil start, and a durable cast iron cylinder, it offers the perfect balance of performance and reliability .
Key Features
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Reliable 3 HP Power: With 98cc displacement, this engine delivers 2.8-3.0 HP at 3600 RPM, providing ample torque for trail riding and recreational fun .
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Durable Construction: Features a cast iron cylinder sleeve and dual ball bearing crankshaft for extended engine life and wear resistance .
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OHV (Overhead Valve) Design: Overhead valves provide cooler operation, better fuel efficiency, and cleaner performance compared to traditional flathead engines .
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Universal 5/8″ Horizontal Shaft: Standard 5/8″ diameter shaft with 3/16″ keyway ensures broad compatibility with mini bike clutches and go-kart torque converters .
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Effortless Recoil Start: Reliable pull-start system provides hassle-free ignition every time .
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Low Oil Shutdown: Automatic engine shut-off protects against damage when oil levels are low .
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Compact & Lightweight: Weighing approximately 21-23 lbs, it’s easy to install and ideal for lightweight frames .
Technical Specifications
We’ve compiled the most accurate specifications from multiple manufacturers to ensure you have all the information you need for your project.
| Specification | Details |
|---|---|
| Engine Model | 156F / GX100 Compatible |
| Engine Type | 4-Stroke, OHV (Overhead Valve), Single Cylinder, Air-Cooled |
| Displacement | 98 cc |
| Horsepower | 2.8 – 3.0 HP @ 3600 RPM |
| Max. RPM | 3600 RPM |
| Net Torque | 4.2 – 4.4 ft-lbs @ 2500 RPM |
| Bore x Stroke | 56 mm x 38-40 mm |
| Compression Ratio | 8.5 : 1 |
| Ignition System | Transistorized Magneto Ignition (T.C.I.) |
| Starting System | Recoil Start (Pull Cord) |
| Lubrication System | Splash / Forced Splash |
| Governor System | Centrifugal Mechanical |
| Air Cleaner | Dual Element Type |
| Fuel Type | 87+ Octane Unleaded Gasoline |
| Fuel Tank Capacity | 0.77 – 1.6 L (0.8 – 1.7 US qt) |
| Oil Capacity | 0.37 – 0.40 L (0.4 US qt) |
| Shaft Rotation | Counter-Clockwise (from PTO shaft side) |
| Shaft Diameter | 5/8 in. (15.875 mm) |
| Shaft Length | Approx. 2.4 in. (60 mm) |
| Shaft Keyway | 3/16 in. |
| Mounting Pattern | 6.5″ x 3″ (165 mm x 76 mm) – Compatible with 6.5HP Clone engines |
| Dimensions (L x W x H) | 11.6″ x 12.0″ x 15.8″ (295 x 304 x 402 mm) |
| Dry Weight | 21 – 23.4 lbs (9.5 – 10.6 kg) |
Note: Specifications may vary slightly by manufacturer and production batch. Always verify your existing mounting pattern and shaft requirements before purchasing. 98cc engine
What’s Included
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98cc 3 HP OHV Horizontal Shaft Engine
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Spark plug wrench
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Owner’s manual & safety instructions
Important: Engine is shipped WITHOUT oil. You must add the correct amount of SAE 10W-30 oil before starting to prevent damage .
Common Applications
This versatile engine is ideal for:
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Mini Bikes: Perfect replacement for Coleman CT100U, Baja Doodle Bug (DB30), and similar frames
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Go-Karts: Ideal for small to medium go-karts and dune buggies
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Utility Equipment: Pressure washers, water pumps, generators, and compressors
Installation Tip: While this engine features a universal mounting pattern, some frames may require minor modifications for a perfect fit .
Why Choose This 98cc Engine?
The 98cc gasoline engine represents the sweet spot between economy and performance. It offers more torque than smaller 79cc engines while remaining lightweight and manageable for younger riders and beginners . The OHV design ensures cooler operation and better fuel economy, while the cast iron cylinder sleeve provides durability that cheaper aluminum-bore engines can’t match . 98cc engine
Whether you’re replacing a worn-out motor or building a custom mini bike from scratch, this 98cc powerplant delivers reliable, push-button (pull-start) performance you can count on.
The 98cc Engine – The Versatile Powerhouse for Mini Bikes and Go-Karts
(For the SKZ Mini Bike blog to attract DIY builders and replacement-part buyers)
Target Keywords: *98cc engine, 3 HP go-kart motor, mini bike engine replacement, Coleman CT100U engine, 5/8 shaft engine*
When it comes to small engines for recreational vehicles, the 98cc 4-stroke has earned a reputation as one of the most versatile and practical options on the market. At SKZ Mini Bike, we’re seeing growing demand for this displacement class—and for good reason. Here’s everything you need to know about the 98cc gasoline engine and why it might be the perfect choice for your next project. 98cc engine
The Goldilocks Displacement
The 98cc engine occupies a unique position in the small engine world :
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More Powerful than 79cc: While 79cc engines (2.5-3 HP) are common, the 98cc variant typically delivers the same 3 HP but with better torque curves and more responsive acceleration .
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Lighter than 6.5HP “Clone” Engines: The big 196cc/6.5HP engines are powerful but heavy. At just 21-23 lbs, the 98cc engine is significantly lighter, making it ideal for smaller frames and younger riders .
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Easier to Mount: The compact dimensions mean it fits where larger engines won’t .
Engineering That Matters
What makes a quality 98cc engine? Look for these features:
Cast Iron Cylinder Sleeve
Cheaper engines use aluminum cylinders with no sleeve. The piston rides directly against the aluminum, which wears out quickly. Quality 98cc engines feature a cast iron cylinder sleeve that provides a hard, durable surface for the piston rings—resulting in significantly longer engine life . 98cc engine
OHV (Overhead Valve) Design
Overhead valves aren’t just marketing speak. This design routes the intake and exhaust through the cylinder head rather than out the side, resulting in :
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Cooler operating temperatures
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Better fuel efficiency
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Cleaner emissions
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Easier starting
Dual Ball Bearings
The crankshaft should be supported by ball bearings on both ends. This reduces friction, handles side loads from chains and clutches better, and extends engine life .
Universal Fitment
One of the best features of modern 98cc engines is their standardized mounting pattern. The 6.5″ x 3″ mounting pattern is designed to be compatible with popular 6.5HP Clone engines, meaning this engine can drop into many frames originally designed for larger motors .
The 5/8″ diameter shaft with 3/16″ keyway is the industry standard for mini bike clutches and go-kart torque converters. Whether you’re running #35 chain or #41, you’ll find compatible clutches readily available .
Safety Features
Modern 98cc engines include important safety features:
Low Oil Shutdown
This automatic sensor prevents the engine from starting or running if oil levels are too low. It’s a simple feature that can save your engine from catastrophic failure .
Project Ideas
Mini Bike Restoration
Have an old frame gathering dust? A 98cc engine can breathe new life into classic mini bikes like the Coleman CT100U or Baja Doodle Bug . 98cc engine
Kids’ Go-Kart
Build a safe, manageable go-kart for children. With 3 HP, it’s powerful enough for fun but not so fast that it becomes dangerous for young drivers .
Utility Power
Need a portable power source? These engines are perfect for small generators, pressure washers, or water pumps .
Maintenance Tips
To keep your 98cc engine running for years:
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Always check oil before each use – These engines are tough, but they won’t run long without oil.
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Use fresh fuel – Old gasoline can gum up the carburetor.
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Clean the air filter regularly – A dirty filter restricts airflow and reduces power.
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Check the spark plug annually – Replace if worn or carbon-fouled.
Is the 98cc Right for You?
The 98cc engine is ideal for:
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Teenagers and smaller adults (approx. 85 kg/185 lbs max load)
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Light-duty trail riding
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Flat terrain cruising
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Budget-friendly builds
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Replacement engines for existing equipment
If you’re looking for a reliable, easy-to-install powerplant that won’t break the bank or your back, the 98cc gasoline engine deserves a close look.
Ready to start your build? The 98cc 3 HP Engine is in stock and ready to ship at SKZMinibike.com.
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