fits model: Yz250, Yz, 250. make: Yamaha. year: 1984.

( Manufacturer Part Number: 39X-11111-00-00 ), ( Part Type: Cylinder Head ), ( Country/region Of Manufacture: Japan )
The Yamaha YZ250 Cylinder Head (model number 39x-11111-00-00) is a vital component of the iconic 1984 YZ250 motorcycle. This cylinder head is meticulously crafted to deliver optimal performance and reliability, making it a favorite among enthusiasts and professional racers alike.
The cylinder head is constructed from high-quality aluminum alloy, ensuring lightweight yet robust durability. Its design includes four valves, two intake and two exhaust, which are actuated by a single overhead camshaft (SOHC). The camshaft is driven by a timing chain, ensuring precise valve timing and efficient engine operation.
The intake and exhaust ports are carefully shaped to optimize airflow into and out of the engine, improving combustion efficiency and power output. The cylinder head also features high-compression combustion chambers, which help to increase engine performance and responsiveness.
Furthermore, the cylinder head is equipped with high-performance valve springs, retainers, and keepers, ensuring reliable valve operation under extreme conditions. The cylinder head also includes a high-quality, multi-layer head gasket, which provides a tight seal between the cylinder head and engine block, preventing leaks and maintaining engine compression.
In summary, the Yamaha YZ250 Cylinder Head (model number 39x-11111-00-00) is a high-quality, performance-focused component that is essential for any YZ250 motorcycle. Its lightweight construction, optimized airflow, high-compression combustion chambers, and high-performance valve train make it a reliable and powerful addition to any YZ250 engine.
Pros of buying a 1984 Yamaha YZ250 (Model number: 39x-11111-00-00):1. Classic design: The 1984 YZ250 has a timeless design that is highly sought after by collectors and enthusiasts.
2. History: The YZ250 is a legendary model in the world of motocross, with a rich history and a cult following.
3. Reliability: The air-cooled, two-stroke engine of the YZ250 is known for its reliability and longevity.
4. Power: The two-stroke engine provides plenty of power and torque, making it a fun and exhilarating ride.
5. Affordability: Compared to newer models, the 1984 YZ250 is often more affordable, making it a good option for those on a budget.
Cons of buying a 1984 Yamaha YZ250 (Model number: 39x-11111-00-00):1. Maintenance: Two-stroke engines require more frequent maintenance than four-stroke engines, including regular oil mixing and spark plug changes.
2. Emissions: Two-stroke engines produce more exhaust emissions than four-stroke engines, which may be a concern for some riders.
3. Availability of parts: Some parts for the 1984 YZ250 may be harder to find or more expensive than parts for newer models.
4. Performance: While the two-stroke engine provides plenty of power and torque, it may not offer the same level of performance as newer, four-stroke engines.
In conclusion, the 1984 Yamaha YZ250 is a great option for collectors, enthusiasts, and budget-conscious riders who appreciate the classic design and reliability of a two-stroke engine. However, potential buyers should be aware of the maintenance requirements and the availability of parts, as well as the potential trade-offs in performance compared to newer models. Overall, the 1984 YZ250 is a fun and iconic ride that can provide plenty of enjoyment for the right rider.
Recommendation: If you are looking for a classic motocross bike with plenty of power and history, and you are willing to put in the maintenance required to keep it running smoothly, the 1984 Yamaha YZ250 (Model number: 39x-11111-00-00) is a great option to consider. However, be sure to research and budget for any potential maintenance or part needs before making a purchase.
For sale is the cylinder head that was removed from a 1984 Yamaha YZ250.There wear use on these parts including marks, scars and corrosion. There is heavy corrosion on these parts that will need addressed before use.
The condition of this item is displayed in the pictures above. I do my best to describe the condition of parts in and pictures.