The edge of VR38DETT engine and key items to maintain

 

The VR38DETT engine (Nissan GT-R R35’s 3.8L twin-turbo V6) advantages.

1. The natural edges/strengths of the VR38DETT
2. Key items to maintain & upgrade to extract best performance

Edge of the VR38DETT

• Strong base architecture – 3.8L displacement, DOHC 24-valve, twin-turbo V6, forged steel crank.
• Semi-closed deck aluminum block – lighter than iron, but reinforced for high boost.
• High potential on stock internals – capable of ~700–800 hp on stock block with proper tuning & fueling.
• Efficient cylinder head design – good airflow, with variable valve timing (VVT) on intake.
• Robust turbocharging system – stock turbos can handle decent boost; upgrade path is straightforward.
• Aftermarket support – massive global tuning community, with proven parts/kits from mild street builds to 2,000+ hp drag monsters.
• Balanced power & drivability – torque-rich, yet smooth, making it usable on both street & track.

Key Items to Maintain

(keeping the engine reliable under performance use)

• Oil & lubrication system
  
• Use high-quality ester-based oil (e.g. Motul 300V, HKS, Amsoil)
• Upgrade oil cooler if pushing power
• Regular oil analysis to monitor bearing health
• Cooling system
  
• Radiator upgrade (Koyo, Mishimoto, etc.)
• Intercooler maintenance/upgrade
• Ignition system
  
• Strong coils + colder plugs
• Fuel system upkeep
  
• Clean injectors, fuel pump checks
• Transmission & driveline service (GR6 is sensitive)
  
• Regular clutch pack inspections, fluid changes

Upgrades to Improve Performance

(steps depending on target hp levels)

1. Supporting Mods (before chasing big numbers)

• High-flow intakes & downpipes
• Exhaust system for freer breathing
• ECU tune / Cobb Accessport / EcuTek / MoTeC for precise mapping

2. Fuel & Airflow

• Bigger fuel injectors & high-flow fuel pumps
• Flex-fuel conversion (E85 or ethanol mix) for knock resistance
• Upgraded intercoolers & hard piping

3. Turbo System

• Stage 1: Stock turbo upgrade or bolt-on turbos (AMS Alpha 9, HKS GT800, etc.)
• Stage 2: Big twin-turbos (GTX, G30/G35 based, 1000+ hp setups)

4. Engine Internals (for >900 hp builds)

• Forged pistons (CP, JE, Wiseco)
• Forged connecting rods (Carillo, Manley, etc.)
• Upgraded bearings & head studs (ARP)
• Ported heads, oversized valves, upgraded cams

5. Oil & Cooling Reliability

• Upgraded oil pump gears (stock weak point at high rpm)
• Secondary oil cooler or dry sump system for extreme builds
• Larger radiator & transmission cooler

6. Transmission & Drivetrain

• Dodson, ShepTrans, or PPG upgraded clutch packs & gears
• Stronger driveshafts & axles for 4-digit hp builds

Summary:

The VR38DETT’s edge is its strong displacement, turbo platform, and aftermarket support. 

For best performance, the priority is oil/cooling reliability, then fueling and turbo upgrades, followed by forged internals & transmission reinforcements if aiming for >900 hp.

TOP SECRET REAR UNDER BUMPER VER.2 UNCOATED CARBON FOR NISSAN GT-R R35 TOP-SECRET-00116

 

TOP SECRET REAR UNDER BUMPER VER.2 UNCOATED CARBON FOR NISSAN GT-R R35 TOP-SECRET-00116

Here are the key advantages of the TOP SECRET Rear Under Bumper Ver. 2 (Uncoated Carbon) (Part # TOP-SECRET-00116) for the Nissan GT-R R35, based on its design specs and comparable product info:

Performance & Aerodynamics

1. Improved Underfloor Airflow & Cooling
   The Ver. 2 under bumper is designed to enhance airflow beneath the car, helping heat exit more efficiently and reducing heat buildup. This aids cooling of diffusers, milled metal parts, and exhaust plumbing.  
2. Reduced Air Resistance / Drag
   By optimizing the rear diffuser geometry, it helps manage the turbulent air at the rear, reducing drag and lift—important for better high-speed stability. Ver. 2 is noted to be 10 mm longer than Ver. 1, and about 25 mm longer than the genuine factory spoiler, increasing its aerodynamic leverage.  
3. Bolt-On Fitment
   Requires just swapping out the genuine bumper’s lower rear fascia—not a full bumper replacement. This ease of installation means less labor and complexity when upgrading.  

Material & Styling

4. Carbon Fiber Construction
   The part is made from real carbon fiber (CFRP), which means it offers high strength-to-weight, meaning it stiffens the rear profile while adding minimal weight. This yields both visual appeal and functional benefit.  
5. Aggressive Styling / Visual Impact
   The design is more dramatic than Version 1 and the factory component. The uncoated carbon finish gives a raw, high-end JDM aesthetic which is often prized by enthusiasts. The extended length further emphasizes rear presence and stance.  

Uncoated Carbon: Pros & Considerations

6. Customization Flexibility
   Uncoated carbon offers a blank canvas. Users can clearcoat, paint, wrap, or apply coatings of their choice—allowing personalization to match their vehicle or aesthetic preferences.  
7. Potential for Better Finish (If Properly Treated)
   While uncoated carbon requires finishing, when treated well (clear coated, polished), it can result in superior shine, depth, and durability compared to some pre-finished options. Neglecting proper finish work, however, may leave fibers exposed or degrade appearance over time. Experience with other TOP SECRET carbon products shows variations in weave appearance and potential need for professional install.  

**In sum: the Ver. 2 uncoated carbon under bumper delivers enhanced aerodynamics, improved cooling, dramatic styling, and customization potential. 

**Its aggressive dimensions and carbon construction give tangible performance and visual upgrades—provided one invests effort in finishing and installation.

TOP SECRET REAR UNDER BUMPER VER.2 UNCOATED CARBON FOR NISSAN GT-R R35 TOP-SECRET-00116

ENDLESS 6POT BRAKE KIT FRONT FOR TOYOTA SUPRA JZA80 ECZ6BJZA80

 

ENDLESS 6POT BRAKE KIT FRONT FOR TOYOTA SUPRA JZA80 ECZ6BJZA80

Edge Advantages of the Endless 6-Pot Brake Kit (Front) for Toyota Supra JZA80

1. Exceptional Braking Power & Control

• The 6-piston caliper, forged from lightweight yet highly rigid aluminum, delivers impressive clamp force for superior stopping power—even under high-speed and high-load driving conditions.  
• Pistons of different diameters in the caliper help prevent uneven pad wear, enhancing braking control and consistency.  

2. High-Quality Construction and Materials

• Forged aluminum material offers both lightweightness and rigidity, contributing to better heat dissipation and less unsprung mass.  

3. Rotor Compatibility & Heat Management

• Supports rotors up to 370 mm (with the standard kit using 345×32 mm 2-piece rotors), broadening upgrade possibilities.   
• Endless uses special heat-treated steel rotors, engineered to resist warping and heat-induced cracks during prolonged hard driving. This extends the life of both the rotors and pads. 

4. Reliable Performance Under High Load

• Built with heat-resistant design and precision engineering to handle demanding driving scenarios—whether you’re on the street, on track days, or pushing for performance runs. 

5. Visual Impact

• The striking blue anodized calipers not only stand out through the wheel spokes but also add a visually appealing, performance-oriented aesthetic upgrade.  

6. Balanced System Option

• Some kits, like the one combining the front 6-pot with rear Racing 4 calipers, offer a matched front-to-rear braking balance—enhancing overall braking performance and control.   

7. Street and Track-Ready Durability

• Tailored for high-output, street-spec sports cars, the kit ensures stable brake response and durability—even under repeated hard braking scenarios. 

Final Thoughts

The Endless 6-pot front brake kit for the Supra JZA80 is a formidable upgrade—melding performance, durability, and style. 

Whether you’re aiming for sharper stopping power on the track or enhanced braking confidence on spirited street drives, this kit delivers with precision. 

The sophisticated design choices, such as differential piston diameters and heat-treated rotors, highlight Endless’s focus on both function and longevity.

ENDLESS 6POT BRAKE KIT FRONT FOR TOYOTA SUPRA JZA80 ECZ6BJZA80

SPOON ALUMINUM RADIATOR FOR HONDA CIVIC EG6 EK4 EK9 19010-EK9-010

 

SPOON ALUMINUM RADIATOR FOR HONDA CIVIC EG6 EK4 EK9 19010-EK9-010

Edge Advantages of the Spoon Aluminum Radiator (19010-EK9-010)

1. Significantly Improved Cooling Efficiency
   
• The radiator utilizes a twin-layer (dual-core) aluminum design that’s 35 mm thick, compared to the standard 10 mm thickness. This significantly increases its heat dissipation ability.   
• Spoon claims an approximate 40% improvement in cooling performance over stock units.   
2. All-Aluminum Construction
   
• Being fully made of aluminum, the radiator offers superior heat conductivity and reduces overall weight compared to core/side-tank plastic alternatives.  
3. Maintains Compatibility with A/C Systems
   
• Designed to fit seamlessly into the stock engine bay, this radiator allows you to retain your air-conditioning system without any modifications.  
4. Seamless Fitment
   
• Spoon maintains the exact physical shape and mounting points of the OEM radiator, making for a direct bolt-on upgrade.  
5. Built for Street and Track Environments
   
• Recommended for heavy street use or track days, this radiator can handle higher thermal loads, making it ideal for spirited driving and racing conditions. 
6. Engineered for System Integration
   
• To optimize performance, Spoon advises pairing the radiator with complementary cooling components like their Spoon SEP hoses, thermostat, thermo switch, and radiator cap. This creates a robust, high-efficiency cooling system. 
• Notably, Spoon’s radiator cap (Type-F for aftermarket use) increases system pressure—raising the coolant’s boiling point. The SEP hoses are designed to withstand this elevated pressure and high RPM environments. 
7. Handmade, High-Quality Manufacturing
   
• The radiator is handmade in Japan, reflecting Spoon’s commitment to craftsmanship and reliability. 

Final Thoughts

This Spoon aluminum radiator is a significant upgrade over the OEM unit, striking a balance between reliability, performance, and maintainability. Whether you’re hitting the track or simply pushing your Civic harder on corner-heavy drives, its improved heat dissipation and enhanced build design can help keep temperatures in check.

SPOON ALUMINUM RADIATOR FOR HONDA CIVIC EG6 EK4 EK9 19010-EK9-010

JUN AUTO REINFORCED CRANK MAIN CAP BOLT FOR SUBARU EJ20 EJ25 1025M-F001

 

JUN AUTO REINFORCED CRANK MAIN CAP BOLT FOR SUBARU EJ20 EJ25 1025M-F001

Here are the key advantages of the JUN Auto Reinforced Crank Main Cap Bolt—part number 1025M-F001—specifically designed for Subaru EJ20/EJ25 engines:

1. Enhanced Tension Distribution

These bolts are engineered to diffuse stress across a wider area, rather than concentrating it at a single point. This optimized distribution preserves the structural integrity of the crankshaft housing and reduces the risk of warping or thermal distortion during high-stress operation.

2. Improved Resistance to Vibration

By mitigating localized stress, the bolts provide better vibration resistance. Elevated stability under vibration helps maintain precise alignment of the crankshaft and lowers the chance of bearing failure during aggressive driving or high-RPM use.

3. Designed for Potential Power Upgrades

With reinforcement in place, the crank main cap remains more robust under increased loads—making the engine better suited for tuning, forced induction, or other performance enhancements. The bolts help sustain block rigidity even as power output climbs.

4. High-Quality Manufacturing by ARP

JUN’s bolt kit utilizes components manufactured by ARP Inc., a recognized authority in high-performance fastening solutions. ARP’s production offers superior consistency and material integrity. 

In short, the JUN Reinforced Crank Main Cap Bolt (1025M-F001) delivers superior strength, enhanced durability, and tuning-friendly reliability—making it an exceptional upgrade for EJ20/EJ25 engines, especially for those exploring increased performance or high-stress use.

JUN AUTO REINFORCED CRANK MAIN CAP BOLT FOR SUBARU EJ20 EJ25 1025M-F001