Honda GX630RH-QZB3 GX630-QZB3 Small Gas Engine Electric Start
688cc 20.8HP With 1" Diameter, 1/4" Keyway Horizontal Shaft
The highest quality guaranteed! We have been in business since 2005, and our engines are fully rebuildable with all parts available. The Honda GX630 engine replacement for GX630RH-QZB3 or GX630-QZB3.The Honda GX630 is the go-to engine for go karts, generators, pressure washers, and various industrial and commercial uses. These premium residential motors are fuel efficient, easy starting and smooth performance. This convenient, heavy duty and reliable 4 stroke OHV twin cylinder engine does the job for many applications. Also, offering a 3-year limited warrenty on these motors. Your order ships quickly with expert turnaround time in our fully stocked warehouse. Packaged with care, Carroll Stream Motor Company provides free shipping.
This Honda engine is a 4 Stroke OHV twin cylinder, which is a 88 X 64 stroke. It is a 688cc, 20.8 HP and 3600 RPM.
This Honda small motor is built with quality components and is ready to outlast the competition. Purchase now to take advantage of our free shipping and quick turnaround time. Or, call if you have questions! 888-208-2088, 248-628-4638.
Summary of the GX630
The Honda GX630RH-QZB3 is a powerful and reliable gas engine manufactured by Honda, known for its durability, performance, and versatility. The GX630 is a horizontal shaft, V-twin, 4-stroke, air-cooled gasoline engine. With a displacement of 688 cc (cubic centimeters), which indicates the total volume of all the cylinders in the engine.
Capable of producing up to 20.8 horsepower (HP) at 3,600 revolutions per minute (RPM). Honda engines are known for their fuel efficiency, helping users save on operating costs over the long term. The GX630 is designed to maximize fuel economy while maintaining high performance levels.
The GX630 is built with high-quality materials and undergoes rigorous testing to ensure durability even in demanding conditions. This reliability minimizes downtime and increases productivity for users. Designed to operate quietly and smoothly, reducing noise and vibration levels for improved comfort during use. Engineered for easy maintenance, with accessible components and user-friendly designs. Routine maintenance tasks such as oil changes, air filter replacement, and spark plug inspection can be performed with minimal effort.
Browse all of our Honda engine options:
GX690
GX630
- Honda GX630RH-QAF1 20.8HP Electric Start
- Honda GX630RH-QXA 20.8HP Electric Start
- Honda GX630RH-QZB3 20.8HP Electric Start
GX390
- Honda GX390UT2X-QNR2 11.7HP Electric Start
- Honda GX390UT2X-QNE2 11.7HP Electric Start
- Honda GX390UT2-QAE2 11.7HP Electric Start
- Honda GX390UT2-QA2 11.7HP Recoil Start
- Honda GX390UT2-HA2 11.7HP Gear Reduction
- Honda GX390UT2-QC9 11.7HP With Air Cleaner
- Honda GXV390T1-DETA 10.2HP Electric Start
- Honda GXV390UT1-DABG 10.2HP Recoil Start
GX270
- Honda GX270UT2-QAE2 8.5HP Electric Start
- Honda GX270UT2-HA2 8.5HP Recoil Start
- Honda GX270UT2-QA2 8.5HP Recoil Start
GX200
GX160
GX120
GX100
Specifications | |
---|---|
Make | Honda |
Model | GX630RH-QZB3 |
Type | Small Engine |
Fuel | Gas Unleaded 86 Octane or Higher |
Engine Type | 4 Stroke OHV Twin Cylinder |
Bore/Stroke | 78 X 72 |
Displacement | 688cc |
Compression Ratio | 9.3:1 |
Max Power | 20.8 HP @ 3600 RPM |
Max Torque | 35.6 ft. lbs. @ 2500 RPM |
Ignition Type | Digital CDI with Variable Timing |
Dimensions (L x W x H) | 16 x 16.25 x 17.25 in. |
Starting Type | Electric Start |
Charging System | 20 Amp |
Oil Capacity | 2.1 Qts |
Dry Engine Weight | 97 lbs. |
Shaft Type | Keyed - Straight |
Shaft Diameter | 1" Diameter, 1/4" Keyway |
Shaft Length | 2-7/8" |
Shaft I.D. Thread Size | 3/8"-24 Drilled and Tapped |
Bolt Pattern | 4 Bolt |
Oil System | Pressure lubrication, Oil Alert |
Reduction Type | None |
Engine Cooling Type | Forced Air Cooling |
PTO shaft Rotation | Counterclockwise (from PTO shaft side) |
Governor System | Centrifugal Mass Type |
Air cleaner | Dual Element |
Features | |
3-Year Limited Warranty | |
Remote Throttle and Choke | |
Two barrel inner-vent carburetor for more precise fuel metering | |
Cast Iron Sleeve | |
Smooth Performance | |
Easy to Use and Maintain | |
Simple throttle control | |
Easy, convenient, heavy duty control box | |
Easily accessible spark plug | |
Easy Starting | |
Hemispherical combustion chamber delivers rapid combustion | |
Automatic mechanical de-compression system | |
Emissions Compliant | |
Lower emissions, same power output! | |
CARB and EPA certified | |
No catalyst necessary | |
Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficency | |
OHV design for increased efficiency and optimal power transfer | |
High compression ratio for better fuel efficiency | |
Precision engineered components result in lower vibration | |
Ball bearing supported crankshaft for greater stability | |
Exceptionally Quiet | |
Carburetor Butterfly | |
Pressure fed crankshaft bearings | |
Reduced mechanical noise due to light weight, noise-reducing materials | |
Forged steel crankshaft and rigid crankcase | |
Helical cut gears | |
Sophisticated air intake system | |
Proven Reliability | |
New carburetor chamber coating and carburetor filter help to protect against fuel impurities | |
Dual element air cleaner | |
Fuel Valve | |
Cross Reference Guide | |
Kohler: CH640 | |
Briggs & Stratton: 386447 | |
Accessories | |
User Manual |