fits model: T120, 650, Bonneville. make: Triumph. year: 1967.

( Manufacturer Part Number: E5727 ), ( Part Type: Cylinder Head Bolt ), ( Engine Type: 4-stroke ), ( Machine Type: Street Motorcycle ), ( Country/region Of Manufacture: United Kingdom )
The Triumph Bonneville T120 motorcycle, manufactured in 1967, was renowned for its classic design and powerful performance. One of its most significant components is the cylinder head, specifically the Triumph E5727 650cc twin cylinder head. This part plays a crucial role in the engine's combustion process.
The Triumph E5727 cylinder head is a finned aluminum design, which aids in heat dissipation. Its dual carburetor setup consists of two 26SM Dell'Orto carburetors. Each carburetor features a separate float bowl and throttle body, allowing for precise fuel-air mixture adjustments. The carburetors are mounted on the cylinder head via rubber mounts, reducing engine vibration and enhancing ride comfort.
The intake ports on the cylinder head are designed to optimize the air-fuel mixture's flow into the combustion chambers. The exhaust ports are equally well-designed, ensuring efficient exhaust gases' expulsion. The combustion chambers themselves are hemispherical in shape, which increases the volumetric efficiency and power output.
The cylinder head also houses the engine's valve train system. It includes inlet and exhaust valves, valve guides, and valve seats. The valves are operated by a single overhead camshaft, which is driven via a timing chain. The camshaft's profile has been carefully designed to optimize the intake and exhaust events, enhancing engine performance.
The Triumph E5727 cylinder head is a finely crafted piece of engineering, which has stood the test of time in the Bonneville T120 motorcycle. Its design and functionality have contributed significantly to the motorcycle's iconic status and impressive performance. Replacing or restoring this part can help maintain or restore the bike's original power and character.
The Triumph Bonneville T120 with a 650cc cylinder head and dual carburetors (Triumph E5727) is a classic motorcycle known for its iconic design and powerful engine. If you're considering purchasing one, it's essential to weigh the pros and cons to make an informed decision.
Pros:1. Timeless Design: The Bonneville T120's classic design is a head-turner, making it an excellent choice for collectors and enthusiasts.
2. Powerful Engine: The 650cc engine provides ample power, making it suitable for both city riding and long-distance touring.
3. Dual Carburetors: Dual carburetors offer better fuel efficiency and improved performance compared to a single carburetor.
4. Versatility: The Bonneville T120 is a versatile motorcycle that can be used for commuting, touring, and even light off-roading.
5. Vintage Feel: Riding a classic motorcycle like the Triumph Bonneville T120 offers an unparalleled riding experience.
Cons:1. Maintenance: Older motorcycles like the Triumph Bonneville T120 require regular maintenance, which can be time-consuming and costly.
2. Fuel Efficiency: Compared to modern motorcycles, the Bonneville T120 may not offer the best fuel efficiency.
3. Lack of Modern Conveniences: The Bonneville T120 does not come with modern features like ABS, traction control, or multiple riding modes.
4. Limited Comfort: The riding position and seating may not be suitable for long-distance touring or riders with back issues.
5. Parts Availability: Finding replacement parts for an older motorcycle like the Triumph Bonneville T120 can be challenging and expensive.
Conclusion:The Triumph Bonneville T120 with a 650cc cylinder head and dual carburetors (Triumph E5727) offers a unique and powerful riding experience. Its classic design, versatile engine, and dual carburetors make it an excellent choice for collectors and enthusiasts. However, its maintenance requirements, limited comfort, and lack of modern conveniences are significant drawbacks. Ultimately, the decision to buy a Triumph Bonneville T120 depends on your personal preferences, riding style, and budget.
Recommendation:If you're looking for a classic motorcycle with a powerful engine and timeless design, the Triumph Bonneville T120 with a 650cc cylinder head and dual carburetors (Triumph E5727) is an excellent choice. However, be prepared for the additional costs and time required for maintenance. If modern conveniences and comfort are essential, you may want to consider a newer motorcycle with similar specifications.
Casting # E3663 HDA, casting date 66 but head has been modified to accept 1969 and later push rod tubes for better oil seal. Valve job new valves then it sat on the shelf. No broken or cracked fins. Ready to bolt on your engine.
Also 32mm spigots have been installed on intake to accept constant velocity carbs like Khan, Miking or Anal MK2. Triumph 650 dual carb cylinder head 9 bolt 1966 date code, Bonneville T120R. Please look closely at the pictures and ask questions.