TRIUMPH 71-3330 Push Rods

( Manufacturer Part Number: 71-3330 ), ( Part Type: Rod ), ( Unit Type: Unit ), ( Vintage Part: Yes ), ( Country Of Origin: United Kingdom )

Review TRIUMPH Push Rods Three Only fits BONNEVILLE T140 TR7RV 750 1973–1983

The Triumph Bonneville T140 750cc model, specifically the 1973 1983 iteration with the iconic **71-3330 pushrod engine** (often referred to as the TR7RV variant), stands as a timeless masterpiece of British motorcycle engineering a machine that seamlessly blends raw mechanical charm with effortless road manners. This legendary twin-cylinder pushrod engine, a refined evolution of the classic 6T and 6T designs, delivers a smooth, linear power delivery that has captivated riders for decades. The **750cc air-cooled inline twin** roars to life with a deep, resonant growl, its polished cylinder heads and exposed pushrods offering a visual and auditory symphony that is unmistakably Triumph. The engine s classic pushrod layout, complete with a single camshaft and overhead valves actuated by rocker arms, not only provides a nostalgic connection to the golden age of British bikes but also ensures a maintenance-friendly design that rewards hands-on enthusiasts. With a peak power output of around **45 50 horsepower** (depending on tuning and modifications), this engine delivers a balanced blend of torque and rev-happy character, making it equally at home on twisty backroads or cruising along open highways.

The **T140 Bonneville** chassis is a study in understated elegance, built around a sturdy **steel double-cradle frame** that balances rigidity with rider comfort. The **36-inch front fork** and **swingarm-mounted rear suspension** (with a progressive-rate spring and hydraulic shock absorber) offer a supple yet controlled ride, absorbing imperfections in the road while maintaining precise handling. The **drum brakes** (front and rear) provide reliable stopping power, though modern upgrades like disc brakes are a popular aftermarket enhancement for those seeking improved modulation. The **fuel tank**, a classic Triumph design with its smooth, rounded contours, not only houses the fuel but also contributes to the bike s iconic silhouette. The **saddle**, upholstered in durable leather or synthetic materials, cradles the rider in a relaxed, upright position, while the **ergonomic handlebars** (often adjustable) allow for a natural grip and easy control.

The **1973 1983 T140 Bonneville** was produced during a transitional era for Triumph, blending the best of the classic pushrod era with subtle refinements that made it a favorite among both purists and customizers. The **TR7RV engine** (a variant of the 71-3330) features a slightly revised cylinder head and camshaft profile, offering a more refined powerband compared to earlier models, while retaining the soulful exhaust note that has become synonymous with the Bonneville name. The **electric start** (introduced in later years) adds a touch of modernity without detracting from the bike s vintage appeal, though many riders prefer the nostalgic charm of a kickstart. The **chrome accents**, from the fuel gauge to the speedometer, exude a timeless British aesthetic, while the **black-out paint schemes** (popular in the '70s and '80s) or classic **two-tone options** allow for personalization without sacrificing authenticity.

Whether you re drawn to the **T140 Bonneville** for its historical significance, its mechanical simplicity, or its ability to be easily modified into a custom chopper, cruiser, or caf racer, this motorcycle embodies the spirit of British motorcycle craftsmanship. The **71-3330 pushrod engine** remains one of the most beloved powerplants in motorcycle history, offering a perfect marriage of performance and personality. With its **750cc displacement**, **pushrod valvetrain**, and **classic Bonneville styling**, this bike is not just a mode of transportation it s a piece of living history that continues to inspire riders of all generations. Whether you re restoring a vintage example to its former glory or building a modern replica, the Triumph T140 Bonneville 750cc stands as a testament to the enduring legacy of Triumph s engineering brilliance.

### **Pros and Cons of Buying a Triumph 71/3330 (1973 1983), Bonneville 750 (1975 1983), or TR7RV Pushrod Models**

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### **Triumph 71/3330 (1973 1983)**

The Triumph 71/3330 was a British twin-cylinder motorcycle produced during the early 1970s, known for its simplicity, reliability, and classic styling. It was essentially a modernized version of the earlier Triumph 6T, with a 700cc parallel-twin engine.

1. **Affordability** These bikes are relatively inexpensive to purchase, especially in basic or stripped-down condition. They are often found for under 1,000 2,500, depending on condition and rarity.

2. **Simplicity** The engine is straightforward, with a pushrod-operated valve train, making it easier to work on than more complex modern bikes. Basic maintenance (oil changes, valve adjustments) can be done with minimal tools.

3. **Reliability** With proper care, the 71/3330 can be a dependable daily rider or weekend cruiser. Many examples still run after decades with minimal modifications.

4. **Classic British Design** The bike has a timeless, retro aesthetic that appeals to enthusiasts of vintage motorcycles. The round headlights, chrome accents, and upright riding position give it a nostalgic charm.

5. **Lightweight** At around 150 170 kg (330 375 lbs) dry, it s easier to handle than heavier modern cruisers, making it suitable for urban riding or short trips.

6. **Parts Availability** While not as widely available as Triumph s later models, parts for the 71/3330 are still accessible through specialist suppliers, online marketplaces, and Triumph s own archives.

7. **Modding Potential** The engine can be tuned with aftermarket parts (e.g., cams, headers, carburetor upgrades) to improve performance. Some owners have successfully built them into reliable, if not high-performance, machines.

8. **Low Running Costs** Fuel efficiency is decent for its size (around 30 40 mpg), and basic repairs are cheap compared to modern bikes.

9. **Community Support** There is a dedicated community of owners and restorers who share knowledge, tips, and parts, making it easier to troubleshoot issues.

10. **Unique Character** The bike has a distinct "old-school" feel, with a throaty exhaust note and a relaxed riding experience that appeals to those who prefer a slower pace.

1. **Outdated Technology** The pushrod engine is less efficient and powerful than modern parallel-twins or inline-fours. It lacks modern refinements like fuel injection, electronic ignition, or disc brakes (early models often have drum brakes).

2. **Poor Ergonomics** The riding position is upright and uncomfortable for long rides, with minimal wind protection. The seat is often hard and narrow, making it unsuitable for extended touring.

3. **Rust and Corrosion** Many examples suffer from rust, particularly in the frame, fuel tank, and suspension components. A thorough inspection is essential before purchase.

4. **Limited Power** The 700cc twin produces around 35 40 bhp, which is adequate for city riding but feels underpowered on highways or when carrying a passenger.

5. **Vibration** The engine can be noticeably vibration-prone, especially at higher RPMs, leading to discomfort over time.

6. **Braking Limitations** Early models often have drum brakes on the rear and front, which are less effective than modern disc brakes. Upgrading brakes can be costly.

7. **Fuel System Issues** Carburetors (often Amals or Dell Ortos) can be finicky, requiring frequent tuning and cleaning. Modern fuel standards may also cause issues with older carbureted engines.

8. **Resale Value** These bikes do not hold value well. They are often bought for parts or as project bikes rather than as investment pieces.

9. **Noise and Emissions** The exhaust note is loud and unfiltered, which may not be suitable for modern noise regulations in some areas. Retrofitting catalytic converters or mufflers can be difficult.

10. **Limited Aftermarket Support** While there is a niche aftermarket, it is not as developed as for more popular bikes like the Triumph Bonneville or Honda CB750. Finding modern components can be challenging.

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### **Triumph Bonneville 750 (1975 1983)**

The Bonneville 750 was Triumph s flagship model during the 1970s, featuring a 750cc parallel-twin engine and a more refined design than the 71/3330. It was a popular choice for both enthusiasts and casual riders.

1. **Higher Performance** The 750cc engine produces around 50 55 bhp, making it more powerful than the 71/3330 and suitable for highway riding.

2. **Better Ergonomics** The Bonneville has a slightly more relaxed riding position compared to the 71/3330, with a slightly lower seat height and improved handlebar placement.

3. **More Refined Engine** The 750cc twin is smoother and less vibration-prone than the 700cc version, offering a more enjoyable riding experience.

4. **Classic Bonneville Aesthetics** The bike retains the iconic Bonneville nameplate, round headlights, and chrome detailing that are highly sought after by collectors.

5. **Broader Parts Availability** As a more popular model, parts for the Bonneville 750 are easier to find than for the 71/3330, including aftermarket upgrades.

6. **Potential for Restoration** Many Bonneville 750s are sought after for restoration projects, meaning there is a community of owners willing to share knowledge and parts.

7. **Modding Flexibility** The engine can be tuned with aftermarket parts (e.g., cams, headers, exhausts) to improve performance, though it remains a "plush cruiser" rather than a high-performance bike.

8. **Nostalgia Factor** The Bonneville 750 is a classic British bike that evokes the spirit of the 1970s, appealing to those who appreciate vintage motorcycles.

9. **Reliability (with Care)** With proper maintenance, the Bonneville 750 can be a reliable daily rider, especially if the engine and drivetrain are in good condition.

10. **Potential for Customization** The bike can be customized with modern components (e.g., disc brakes, suspension upgrades) to improve safety and comfort without losing its classic look.

1. **Higher Cost** Bonneville 750s are generally more expensive to purchase than the 71/3330, especially in restored or well-maintained condition. Prices can range from 2,500 to 6,000 or more.

2. **Rust and Wear** Like all vintage bikes, the Bonneville 750 is prone to rust, particularly in the frame, fuel tank, and suspension. A thorough inspection is critical.

3. **Outdated Safety Features** Many models lack modern safety features such as ABS, traction control, or advanced braking systems. Upgrading brakes can be costly.

4. **Fuel System Challenges** Carbureted engines can be finicky, requiring regular tuning and cleaning. Modern fuel standards may also cause issues.

5. **Vibration and Comfort** While smoother than the 71/3330, the engine can still vibrate at higher RPMs, and the seat and ergonomics are not ideal for long rides.

6. **Limited Modernization** Retrofitting modern components (e.g., fuel injection, electronic ignition) can be difficult and may not be worth the cost for a classic bike.

7. **Resale Value** While the Bonneville 750 holds value better than the 71/3330, it is still not a high-value investment. Most buyers are enthusiasts rather than investors.

8. **Maintenance Costs** While parts are available, labor costs for restoration or maintenance can add up, especially if working with a specialist.

9. **Noise and Emissions** The exhaust note is loud, and retrofitting modern emissions equipment can be challenging.

10. **Market Saturation** There are many Bonneville 750s on the market, meaning competition for good examples can be fierce. Buyers must be prepared to inspect thoroughly to avoid hidden issues.

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### **Triumph TR7RV Pushrod Models (1970s)**

The Triumph TR7RV (Roadster) was a rare and experimental model based on the TR7 sports car, featuring a pushrod engine and a unique design. It is one of the rarest Triumph motorcycles, with only a handful produced.

1. **Extreme Rarity** The TR7RV is one of the rarest Triumph motorcycles ever made, making it highly collectible and desirable for enthusiasts

Details:

1973 - 1983 TRIUMPH T140 BONNEVILLE 750 TR7RV PUSH RODS 71-3330 measures 5 15/16 AUTHENTIC VINTAGE BUYER TO ASK ALL QUESTIONS AND VERIFY FIT YOUR BIKE BEFORE PURCHASING.

part #: 713330 prices

• $25.00-$95.00

specifications cyclevintagee:

• for models: T140, Tr7rv, 750, Bonneville
• for makes: Triumph
• for years: 1973-1983
• mpn: 71-3330
• part type: Rod
• unit type: Unit
• vintage part: Yes
• country of origin: United Kingdom

offer cyclevintagee:

• started: May 4, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock

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

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• city: Goldendale, Washington
• # reviews: 1732

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• cost: $10.00

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