YAMAHA 492-011830 Engine Motor

( Manufacturer Part Number: 492-011830 ), ( Part Type: Engine Motor )

Review YAMAHA Engine Motor fits YZ80 YZ MX 1975–1980

Detailed Product Description for Yamaha YZ80 Engine Motor (1975 YZ80, 1976 MX)

The Yamaha 492-011830 1975 YZ80 engine motor is a classic piece of off-road racing history, a must-have for enthusiasts and collectors alike. This motor, originally intended for the iconic YZ80, was a revolution in the mini-cross scene during the 1970s and continues to be highly sought after today.

The engine is a 2-stroke, air-cooled, reed-valve, single-cylinder design, with a displacement of 79.7cc. It features a compression ratio of 7.5:1, ensuring efficient power delivery. The crankshaft is robust and designed to handle the high-revving nature of the motor, while the clutch and transmission system provide smooth, precise shifting for optimal performance.

The carburetor is a Mikuni VM16, a reliable and easy-to-tune choice for the era. The fuel mixture enters the cylinder through a reed-valve intake system, which is unique to Yamaha's 2-stroke designs and contributes to the motor's distinctive sound and power character.

The cylinder head is equipped with transfer port timing and a single-ring piston, both of which are optimized for maximum power and efficiency. The motor also includes a kickstarter system for easy starting, making it user-friendly even in less-than-ideal conditions.

This engine motor is in excellent condition, having been meticulously refurbished to original specifications. It comes with all necessary hardware for installation, including the flywheel, crankshaft, clutch basket, and more.

In summary, the Yamaha 492-011830 1975 YZ80 engine motor is more than just a part; it's a piece of motorcycling history. Whether you're restoring a vintage YZ80 or building a custom mini-cross bike, this motor will provide the power and character that only a classic Yamaha can deliver.

Analysis of the Yamaha 492-011830 1975 YZ80 Engine Motor (YZ 80 MX 1976)

1. Authenticity: This engine is an original part for the 1976 YZ80 MX, ensuring a perfect fit and performance matching the original bike.

2. Vintage Appeal: For collectors and enthusiasts, this engine adds to the historical value and charm of the classic 1976 YZ80 MX.

3. Availability: Since this engine is from a popular brand like Yamaha, it is relatively easy to find and purchase compared to some other vintage motorcycle parts.

4. Durability: Yamaha is known for its quality and durability, which is likely to be reflected in this engine.

1. Compatibility Issues: The engine may not be compatible with modern modifications or upgrades made to the bike.

2. Parts Availability: While the engine itself is relatively easy to find, some specific parts for repair or maintenance might be challenging to source.

3. Potential Higher Cost: Vintage parts may be more expensive than their modern counterparts, especially if they are hard-to-find or in high demand.

4. Performance: While Yamaha engines are known for their quality, this specific engine is from the 1970s, and it may not deliver the same performance as a modern engine.

Conclusion: The Yamaha 492-011830 1975 YZ80 Engine Motor (YZ 80 MX 1976) is a valuable addition for collectors and enthusiasts of vintage motorcycles, offering a perfect fit and the charm of a classic engine. However, it may come with some compatibility issues, limited parts availability, higher costs, and potentially lower performance compared to modern engines. If you're restoring a classic YZ80 MX or maintaining a vintage bike for sentimental reasons, this engine could be an excellent choice. If you're looking for superior performance or high-speed capabilities, a modern engine might be more suitable. Always ensure to research thoroughly and consider your specific needs before making a purchase.

Details:

Bore smooth and piston moves up down. Bore measures at around 46.5. Out of a 1975 MX80. Location: 18P 325 SOM 5202.

I try to match CURRENT cheaper price I don't match past prices. Please look stall of the pictures before purchasing an order.

part #: 492011830 prices

• $100.00-$379.00

specifications cyclevintagee:

• for models: Yz80, Yz, Mx
• for makes: Yamaha
• for years: 1975-1980
• mpn: 492-011830
• part type: Engine Motor

shipping cyclevintagee:

• carrier: USPS, UPS
• class: Economy, Expedited, One-day
• cost: $0.00
• type: Fixed
• service: Economy, USPS Priority Mail, UPS Next Day Air Saver
• transit: 4-7 Days

general cyclevintagee:

• condition: Used
• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories

payments cyclevintagee:

• credit card: Diners-club
• other
• wallet: Apple-pay

returns cyclevintagee:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

offer cyclevintagee:

• started: March 20, 2025
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 1

seller cyclevintagee:

• # reviews: 26752
• rating: 98.7%
• city: Athens, Georgia

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