Infiniti G35 Coupe 2004 Specs

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Infiniti G35 Coupe 2004 Specs

The 2004 Infiniti G35 Coupe. The name alone conjures images of sleek lines, a potent V6, and a driving experience that bridges the gap between luxury and performance. For enthusiasts and professionals alike, understanding the intricacies of this machine is crucial. Let's delve into the comprehensive specifications of the 2004 G35 Coupe, covering engine details, drivetrain, chassis, and more.

Engine Specifications

At the heart of the 2004 G35 Coupe lies the venerable VQ35DE engine. This 3.5-liter (3498cc) V6 is a masterpiece of Nissan engineering, known for its smooth power delivery, robust construction, and overall reliability. It's a DOHC (Double Overhead Camshaft) design featuring four valves per cylinder. Let's break down the key engine specs:

  • Engine Code: VQ35DE
  • Configuration: 60-degree V6
  • Displacement: 3.5 liters (3498 cc / 213.5 cu in)
  • Bore x Stroke: 95.5 mm x 81.4 mm (3.76 in x 3.20 in)
  • Compression Ratio: 10.3:1
  • Fuel System: Multi-port Fuel Injection (MPFI)
  • Valvetrain: DOHC, 4 valves per cylinder
  • Horsepower: 280 hp @ 6,200 rpm (SAE net) - 6MT Models
  • Horsepower: 260 hp @ 6,000 rpm (SAE net) - 5AT Models
  • Torque: 270 lb-ft @ 4,800 rpm (SAE net) - 6MT Models
  • Torque: 260 lb-ft @ 4,800 rpm (SAE net) - 5AT Models
  • Recommended Fuel: Premium Unleaded (91 octane or higher)

The difference in horsepower and torque figures between the manual (6MT) and automatic (5AT) transmissions stems from slight tuning variations to optimize performance for each drivetrain. The manual transmission models generally provide a more direct and engaging driving experience, while the automatic prioritizes smoothness and ease of use.

Real-world example: Many owners report that the VQ35DE is remarkably reliable, often exceeding 200,000 miles with proper maintenance. However, potential issues to watch out for include timing chain tensioner wear (especially in earlier models), oil consumption, and camshaft position sensor failures. These are generally manageable with preventative maintenance and timely repairs.

Drivetrain Specifications

The 2004 G35 Coupe offered two distinct drivetrain options:

  • Rear-Wheel Drive (RWD): Standard on all models
  • Transmissions:
    • 6-Speed Manual (6MT): A close-ratio gearbox providing excellent driver control.
    • 5-Speed Automatic (5AT): A smooth-shifting automatic transmission with manual shift mode.
  • Final Drive Ratio: Varies depending on the transmission and model. Consult the vehicle's service manual for exact specifications. Typically, the manual transmission models had a slightly shorter final drive ratio for enhanced acceleration.
  • Limited-Slip Differential (LSD): Available as an option, particularly on the manual transmission models. The LSD enhances traction during spirited driving and cornering by distributing power more effectively to the rear wheels.

The 6-speed manual transmission is highly regarded for its precise shifts and engaging feel, making it a favorite among driving enthusiasts. The 5-speed automatic, while not as sporty, provides a comfortable and refined driving experience, especially in daily commuting.

Chassis and Suspension Specifications

The G35 Coupe's chassis is based on Nissan's FM (Front Midship) platform, which positions the engine behind the front axle for improved weight distribution and handling. The suspension system is designed to provide a balance between comfort and performance.

  • Chassis: Unibody construction
  • Front Suspension: Independent, double-wishbone with coil springs and stabilizer bar
  • Rear Suspension: Independent, multi-link with coil springs and stabilizer bar
  • Steering: Vehicle-speed-sensitive power-assisted rack-and-pinion steering
  • Turning Circle: Approximately 36.1 feet (curb-to-curb)

The double-wishbone front suspension and multi-link rear suspension contribute to the G35 Coupe's excellent handling characteristics. The vehicle-speed-sensitive power steering provides precise and responsive steering feel, especially at higher speeds.

Technical Note: Upgrading the suspension with aftermarket components, such as stiffer springs, adjustable dampers, and thicker stabilizer bars, can significantly improve the G35 Coupe's handling performance for track days or spirited driving. However, it's important to choose components that are compatible with the vehicle and properly installed.

Brakes

Stopping power is provided by a capable brake system.

  • Front Brakes: Ventilated discs
  • Rear Brakes: Ventilated discs
  • Anti-lock Braking System (ABS): Standard
  • Electronic Brake-force Distribution (EBD): Standard
  • Brake Assist: Standard

The ventilated disc brakes provide excellent stopping power and heat dissipation. ABS prevents wheel lockup during hard braking, while EBD optimizes braking force distribution between the front and rear wheels for improved stability. Brake Assist enhances braking performance in emergency situations.

Wheels and Tires

The 2004 G35 Coupe came with various wheel and tire options depending on the trim level.

  • Standard Wheels: 17-inch alloy wheels
  • Optional Wheels: 18-inch alloy wheels (available on some models)
  • Tire Size (Standard): 225/50R17
  • Tire Size (Optional): 225/45R18 (front), 245/45R18 (rear) - Staggered Setup

A staggered wheel and tire setup, where the rear tires are wider than the front tires, is often used to improve rear-wheel traction and handling balance. This was an option on some G35 Coupe models.

Dimensions and Weight

Understanding the G35 Coupe's dimensions and weight is important for various reasons, including parking, storage, and calculating performance metrics.

  • Wheelbase: 108.4 inches (2753 mm)
  • Length: 182.2 inches (4628 mm)
  • Width: 72.6 inches (1844 mm)
  • Height: 54.8 inches (1392 mm)
  • Curb Weight: Approximately 3,448 lbs (1,564 kg) - varies depending on options and transmission.

The G35 Coupe's relatively short wheelbase and wide track contribute to its agile handling. The curb weight is moderate for a vehicle in its class.

Exterior

The exterior design of the 2004 Infiniti G35 Coupe is characterized by its sleek lines, aggressive stance, and distinctive styling cues.

  • Body Style: 2-door coupe
  • Headlights: High-Intensity Discharge (HID) headlights (standard on many models)
  • Taillights: LED taillights
  • Aerodynamics: Aerodynamically optimized body design for reduced drag and improved stability.

Interior

The interior of the G35 Coupe is designed to provide a comfortable and luxurious driving experience.

  • Seating: 5-passenger seating
  • Seats: Leather seats (standard on most models)
  • Features: Automatic climate control, power windows, power locks, premium audio system (Bose on some models), sunroof (optional)

Fuel Economy

Fuel economy is an important consideration for any vehicle. Here are the EPA estimates for the 2004 G35 Coupe:

  • Fuel Economy (EPA Estimates):
    • 6-Speed Manual (6MT): 18 mpg city / 25 mpg highway
    • 5-Speed Automatic (5AT): 19 mpg city / 26 mpg highway

These fuel economy figures are estimates and may vary depending on driving conditions, vehicle maintenance, and other factors.

Common Issues and Maintenance

While the 2004 G35 Coupe is generally a reliable vehicle, there are a few common issues that owners and mechanics should be aware of:

  • Timing Chain Tensioner: As mentioned earlier, timing chain tensioner wear is a common issue, especially in earlier models. Symptoms include a rattling noise from the engine, particularly on startup.
  • Oil Consumption: Some VQ35DE engines are prone to oil consumption. Regular oil level checks are essential.
  • Camshaft Position Sensors: Camshaft position sensor failures can cause engine misfires and poor performance.
  • Bose Audio System: The Bose audio system, while generally good, can experience issues with the amplifier or speakers.
  • Window Motor: The power window motors can sometimes fail, requiring replacement.

Regular maintenance, including oil changes, filter replacements, and tune-ups, is crucial for keeping the 2004 G35 Coupe in good running condition. Using high-quality parts and following the manufacturer's recommended maintenance schedule can help prevent many common issues.

Pro Tip: When diagnosing issues with the VQ35DE engine, a scan tool can be invaluable for reading diagnostic trouble codes (DTCs) and pinpointing the source of the problem.

Conclusion

The 2004 Infiniti G35 Coupe is a well-engineered and stylish sports coupe that offers a blend of performance, luxury, and reliability. By understanding its specifications, potential issues, and maintenance requirements, enthusiasts, owners, and professionals can keep this iconic vehicle running smoothly for years to come. Its combination of the powerful VQ35DE engine, available 6-speed manual transmission, and well-balanced chassis makes it a joy to drive. Whether you're a seasoned mechanic or simply an automotive enthusiast, the G35 Coupe remains a compelling and rewarding vehicle.

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