fits model: Yz80, Yz. make: Yamaha. year: 1978–1980.

( Manufacturer Part Number: 2J500 ), ( Part Type: Cylinder Head ), ( Placement On Vehicle: Front ), ( Country/region Of Manufacture: Japan )
The 2J500 cylinder YZ YZ80 80 from the year 1978, specifically the 2J5 variant for Yamaha, is a historic piece of two-wheel machinery. This head unit is a testament to the advanced engineering and design that characterized the golden age of motocross.
The 2J500 cylinder head is a critical component of the YZ80 80, responsible for housing the engine's combustion chamber and valve train. It is crafted from high-quality materials, ensuring durability and reliability under the rigors of off-road racing. The cylinder head features a single overhead camshaft (SOHC) design, which provides efficient power delivery and responsive throttle response.
The intake and exhaust ports are meticulously shaped to optimize airflow, enhancing the engine's breathing capabilities and contributing to improved performance. The valves are precision-machined for smooth operation and are actuated by a single camshaft, which is driven via a timing chain.
The 2J500 cylinder head is also equipped with a high-compression piston and a lightweight, forged connecting rod. These components work together to increase the engine's power output and efficiency, providing a thrilling riding experience.
In summary, the 2J500 cylinder head for the YZ80 80 is a masterclass in engine design and engineering. Its combination of advanced features, high-quality materials, and meticulous craftsmanship makes it a sought-after component for motocross enthusiasts and collectors alike. Whether you're looking to restore a vintage YZ80 80 or upgrade the performance of your modern motocross bike, this cylinder head is an excellent choice.
Pros of buying a 2J500 cylinder YZ/YZ80 1978 model Yamaha head:1. Vintage appeal: This head is a classic piece of motorcycle history, which could be an attractive feature for collectors or enthusiasts of vintage motorcycles.
2. Potential for restoration: If the head is in good condition, it may be possible to restore it to its original glory, which could increase its value.
3. Relatively affordable: Compared to newer models, vintage motorcycle parts can be more affordable, making this a budget-friendly option.
Cons of buying a 2J500 cylinder YZ/YZ80 1978 model Yamaha head:1. Limited availability: Older parts may be harder to find, which could make it difficult to locate replacement parts if needed.
2. Potential for wear and tear: Older parts may have suffered from wear and tear over the years, which could require additional repairs or replacements.
3. Compatibility issues: If the head is not in perfect condition, there may be compatibility issues with other parts of the motorcycle, which could result in additional costs.
Conclusion:If you're a vintage motorcycle enthusiast or collector, this could be a great opportunity to acquire a piece of motorcycle history. However, if you're looking for a reliable, high-performance part, it may be wiser to invest in a newer model. Be sure to thoroughly inspect the head for any damage or wear and tear before making a purchase, and consider the cost of any potential repairs or replacements.
Recommendation:If you're interested in purchasing a 2J500 cylinder YZ/YZ80 1978 model Yamaha head, we recommend doing your research and checking with other collectors or experts in the field to ensure that you're getting a good deal. Additionally, be sure to inspect the head carefully and consider the cost of any necessary repairs or replacements. Ultimately, whether or not this is a good investment for you depends on your personal preferences and budget.
I hand clean and inspect all parts myself to ensure the quality of all parts I post I am a one man show. Ready to use.
1978 Yamaha Yz 80 2j5 cylinder head, comes as photoed. The spark plug hole threads are good. View photos.
Good condition no cracked or repaired fins. The combustion chamber is clean no pitting or detonation.