HONDA 14451-ME5-003 Hydraulic Lash Valve

( Manufacturer Part Number: 14451-ME5-003 ), ( Type: Valve Lifter ), ( Machine Type: Street Motorcycle ), ( Material: Steel ), ( Vintage Part: Yes ), ( Country Of Origin: Japan ), ( Performance Part: No )

Review HONDA Hydraulic Lash Valve Lifter fits NIGHTHAWK CB650SC CB650 650 1983

The **Honda 14451-ME5-003 1983 CB650SC Nighthawk** is a rare and highly sought-after classic motorcycle that embodies the bold, rebellious spirit of the early 1980s. This iconic machine represents Honda s pioneering shift toward sportier, more aggressive styling while retaining the reliability and engineering precision that defined the brand. The **CB650SC Nighthawk** was a groundbreaking departure from the traditional cruiser and touring bikes of its era, blending a low-slung, aggressive stance with a powerful, fuel-injected engine a feature that was revolutionary at the time. The **ME5-003** designation refers to the specific engine variant, which is a **652cc air-cooled, four-stroke, SOHC (Single Overhead Camshaft) inline-four** producing a smooth yet spirited **55 horsepower** and **42 lb-ft of torque**, delivered through a crisp, precise **five-speed transmission** with a chain final drive. This engine is renowned for its balanced power delivery, making it equally capable of effortless cruising and spirited riding, while its **hydraulic lash adjuster valves** ensure consistent performance and longevity with minimal maintenance.

The **1983 Nighthawk s** design is a striking fusion of aerodynamics and raw aggression, with a **low-slung, raked-out frame** that lowers the rider s center of gravity for enhanced stability and handling. The **fiberglass fairings** a first for Honda at the time were not only stylish but also lightweight, contributing to the bike s nimble, responsive nature. The **sleek, angular headlight and dual round taillights** give it a futuristic, almost military-inspired look, while the **blacked-out chrome accents** and **matte-finished components** add a touch of understated sophistication. The **wide, aggressive seat** and **low handlebars** invite a forward-leaning riding position, ideal for both spirited highway cruising and technical track use. The **front disc brakes with a single-piston caliper** and **rear drum brake** provide reliable stopping power, though later models would see upgrades to improve performance.

Under the hood, the **CB650SC s** engineering is a testament to Honda s precision. The **hydraulic lash adjuster valves** eliminate the need for manual valve adjustments, reducing maintenance and ensuring consistent valve clearance over time. This feature, combined with the **piston-port induction system**, allows for a cleaner, more efficient combustion process, contributing to the engine s smooth operation and longevity. The **wet-sump lubrication system** and **pressure-lubricated bearings** further enhance durability, making this a bike that can handle both daily commuting and weekend adventures with ease. The **fuel injection system** (a rarity in 1983) ensures consistent power delivery across the rev range, while the **sliding-piston carburetor** (in some variants) provides a rich, throaty exhaust note that enthusiasts adore.

The **1983 CB650SC Nighthawk** is not just a motorcycle; it s a piece of automotive history that bridges the gap between classic cruisers and modern sport-touring bikes. Its **unique blend of performance, style, and innovation** makes it a favorite among collectors and riders who appreciate understated elegance with a touch of edge. Whether cruising down a scenic coastal highway or carving through winding backroads, this bike delivers a **smooth, engaging ride** that feels both timeless and cutting-edge. For those who seek a machine that turns heads, performs exceptionally, and carries the legacy of Honda s bold experimentation, the **1983 CB650SC Nighthawk (14451-ME5-003)** is an unparalleled choice a true icon of its era.

### **Pros and Cons of Buying a 1983 Honda CB650SC Nighthawk (14451-ME5-003, Hydraulic Lash Valves)**

#### **Pros**

1. **Classic Design with Modern Appeal**

The CB650SC Nighthawk was one of Honda s most stylish bikes of the early 1980s, featuring a sleek, aggressive fairing and a low-slung frame. Its retro styling remains desirable today, making it a strong candidate for collectors and enthusiasts who appreciate classic motorcycles.

2. **Reliable Honda Engine**

The ME5 engine (a 652cc parallel-twin) is well-regarded for its durability and smooth operation. Honda s reputation for long-lasting engines means this bike could potentially run for many more years with proper maintenance.

3. **Hydraulic Lash Adjusters (HLA)**

Unlike many bikes of its era, the CB650SC came with hydraulic lash adjusters, which eliminate the need for manual valve adjustments. This feature reduces maintenance hassle and can extend valve life if properly maintained.

4. **Good Performance for Its Time**

The ME5 engine produces around 55-60 horsepower, which was competitive in the mid-1980s. While not a high-revving sportbike, it offers a balanced mix of power and torque, making it suitable for highway cruising and light track use.

5. **Modular and Upgradable**

The CB650SC shares many components with other Honda 650cc bikes (e.g., CB600F, CB750), making parts widely available. Aftermarket support is strong, with options for exhaust upgrades, carburetor tuning, and suspension modifications.

6. **Comfortable Riding Position**

The ergonomics of the Nighthawk are more upright than aggressive, making it comfortable for longer rides. The seat and handlebars are designed for a relaxed, cruising posture.

7. **Potential for Restoration or Daily Use**

If well-maintained, this bike can serve as a daily rider or a project for restoration. Many owners enjoy the process of bringing a classic bike back to its original condition or modifying it for modern use.

8. **Lower Running Costs Compared to Modern Bikes**

Fuel efficiency is decent for a twin-cylinder bike, and maintenance costs (if kept up) are lower than those of modern high-performance motorcycles.

---

#### **Cons**

1. **Age and Wear**

The bike is nearly 40 years old, meaning it may have significant wear in critical components such as the engine, transmission, or suspension. Rust, worn bearings, and outdated materials (e.g., rubber seals) are common issues.

2. **High Maintenance Requirements**

While the HLA reduces valve maintenance, other areas like the carburetors (CV carburetors in this model), clutch, and chain will require frequent attention. Older bikes often suffer from leaks, worn seals, and degraded plastics.

3. **Outdated Safety Features**

The CB650SC lacks modern safety features such as ABS, traction control, or advanced braking systems. Its braking setup (likely a single disc upfront and drum or disc at the rear) is less effective than contemporary standards.

4. **Limited Power and Performance**

The ME5 engine is not as powerful as modern 650cc bikes (e.g., modern CB650R, Yamaha MT-07). It lacks the high-revving character and torque of modern twin-cylinder engines, making it feel underpowered by today s standards.

5. **Fuel Injection vs. Carburetors**

The CB650SC uses carburetors, which are less efficient and more finicky than modern fuel-injected systems. Tuning and adjusting carburetors can be time-consuming and require skill.

6. **Rust and Corrosion Risks**

Older bikes, especially those stored in damp conditions, are prone to rust. The frame, exhaust, and suspension components may require inspection and potential replacement.

7. **Parts Availability and Cost**

While parts are available, some may be expensive or hard to find. Replacement O-rings, gaskets, and seals can add up quickly. Aftermarket parts may be necessary for upgrades or repairs.

8. **Resale Value and Depreciation**

Classic bikes like the Nighthawk can appreciate in value if well-maintained, but they also depreciate quickly if neglected. Buyers should be prepared for the possibility of the bike losing value over time unless it s restored or kept in pristine condition.

9. **Legal and Compliance Issues**

Depending on the region, older bikes may need modifications to meet modern emissions or safety standards (e.g., catalytic converters, lighting, or exhaust noise regulations). Compliance could require costly upgrades.

10. **Riding Experience Limitations**

The bike s suspension and ergonomics are not optimized for modern riding styles. The lack of advanced suspension tuning (e.g., adjustable forks) means the ride quality may feel stiff or outdated compared to newer bikes.

---

### **Conclusion**

The 1983 Honda CB650SC Nighthawk is a **desirable classic bike** with a strong following among enthusiasts who appreciate its retro styling and mechanical simplicity. It offers a **unique riding experience** that modern bikes cannot replicate, making it ideal for collectors, restorers, or those who enjoy the nostalgia of classic motorcycles.

However, it is **not a practical daily rider** for everyone. The bike requires **significant maintenance**, lacks modern safety and performance features, and may have **hidden issues** from its age. If you are looking for a **reliable, low-maintenance, high-performance** motorcycle, a modern 650cc bike would be a better choice.

If you are **passionate about classics, willing to invest time and money in maintenance, and enjoy the process of restoring or modifying a vintage bike**, the CB650SC Nighthawk could be a rewarding purchase. Otherwise, it may be more trouble than it s worth for casual riders or those seeking a hassle-free riding experience.

---

### **Recommendation**

- You are a **classic motorcycle enthusiast** and enjoy the challenge of restoring or maintaining an older bike.

- You have **mechanical skills** or access to a mechanic who can handle Honda ME5 engines and carburetors.

- You plan to **use it sparingly** (e.g., for weekend rides or track days) rather than as a daily commuter.

- You are prepared to **budget for potential major repairs** (e.g., engine rebuild, suspension refresh, exhaust system).

- You appreciate **aesthetics and history** over modern performance and convenience.

- You prioritize **reliability, safety, and low maintenance** over vintage appeal.

- You are not willing to **invest time and money** in upkeep or restoration.

- You plan to **ride it frequently** as a daily bike without proper maintenance.

- You prefer **modern features** like fuel injection, ABS, or advanced suspension tuning.

**Final Verdict:** The CB650SC Nighthawk is a **fantastic project bike or collector s item** but not an ideal choice for those seeking a hassle-free, high-performance motorcycle. If you re drawn to its legacy and willing to put in the work, it can be an incredibly rewarding ride. Otherwise, consider a modern 650cc bike for a more practical experience.

Details:

Parting out the 1983 Honda CB650SC Nighthawk 650 shown in last photos. View the photos for details and condition. Sold as shown, is. This Listing is for 16 good used Honda Hydraulic Valve Lifters.

part #: 14451me5003 prices

• $14.99-$48.99

specifications valvemotorcycleaz:

• for models: Cb650sc, Cb650, 650, Nighthawk
• for makes: Honda
• for years: 1983
• mpn: 14451-me5-003
• type: Valve Lifter
• machine type: Street Motorcycle
• material: Steel
• vintage part: Yes
• country of origin: Japan
• performance part: No

shipping valvemotorcycleaz:

• cost: $15.10
• transit: 2-6 Days
• class: Expedited, Standard
• service: USPS Priority Mail, USPS Ground Advantage
• type: Calculated
• carrier: USPS

payments valvemotorcycleaz:

• credit card: Mastercard
• wallet: Paypal
• other

offer valvemotorcycleaz:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• best offers: True
• started: May 14, 2026
• quantity: 1

returns valvemotorcycleaz:

• policy: No Returns

seller valvemotorcycleaz:

• # reviews: 12955
• rating: 99.8%
• city: Fort Dodge, Iowa

general valvemotorcycleaz:

• Engines Engine Parts > Valvetrain Components > Engine Valves
• condition: Used

Honda 14451-ME5-003 Is Similar To:

• 1 Au-09011imx Bronco Engine Intake Valve Honda Replaces Oem (28.6% similar) After seeing that success forward was born. Many other companies just put up what they think the parts fit. A deal was made and that inventory sold online over the next few months as sideline job. Shipping in continental us is free. We branched out into specific parts people need to keep their ...(April 24th, 2018)
• 1 Au-09189imx Bronco Engine Intake Valve Honda Trail Passport (28.2% similar) Shipping in continental us is free. Many other companies just put up what they think the parts fit. More excess inventories were hunted down and sold. We branched out into specific parts people need to keep their machines going. A deal was made and that inventory sold online over the next few months...(May 11th, 2018)
• 1 Xu-09502imx Psychic Engine Intake Valve Honda (32.8% similar) More excess inventories were hunted down and sold. After seeing that success forward was born. Many other companies just put up what they think the parts fit. A deal was made and that inventory sold online over the next few months as sideline job. This provides reduced friction for quicker higher ...(July 23rd, 2018)
• 00000 Vertex Honda Trx300ex Valve (24.8% similar) Honda TRX300EX valve oil seals kit this is a brand new set of vertex and seal. Please review all pictures to assess the condition of item. Includes what is in the photos. If you are expecting new parts please visit your local dealer. Used parts have been and will show signs of wear...(February 22nd, 2018)
• 021-0633 Nos Honda Exhaust Valve Set (31% similar) From a parts house buy out. In the original box packaging. P/N L512125 honda civic full set of 4 nos honda exhaust valves. Made in japan...(December 22nd, 2016)
• 066394 Pro Intake Valve Stem Seal Honda (26.9% similar) Non-radial, pattern and tread compound requirements, inflation recommendations front-to-rear tire matching. Buyer pays return shipping. Always match the front and rear tires for optimal handling, safety performance. Always give tires a gentle run-in period of 100 miles to get the feel new this means...(September 27th, 2018)
• 07hmd-ml00101 Honda New Nos Oem Valve Guide Driver Tool (29.6% similar) Buyer pays return shipping cost. Most of, if not all used parts have scratches, scuffs and other minor flaws. Please understand that all used parts will have wear or cosmetic flaws of some kind from previous use. 5MM valve guide driver tool 07HMD-ML00101 this is new...(June 1st, 2018)
• 0926-0049 Vesrah Exhaust Valve For Honda (28.3% similar) ...(October 31st, 2018)
• 0926-0052 Vesrah Intake Valve For Honda Rubicon (25.2% similar) ...(October 31st, 2018)
• 0926-0053 Vesrah Exhaust Valve For Honda Rubicon (26.6% similar) ...(October 31st, 2018)
• 0926-0068 Vesrah Intake Valve For Honda Rancher (26.8% similar) ...(October 31st, 2018)