CARRILLO SCR5450-6 Pro Wmc Bolt Connecting Rods Nissan/infiniti/datsun VR38 3/8

( Brand: Carrillo ), ( Manufacturer Part Number: SCR5450-6 ), ( Part Type: Bolt Rod ), ( Air Freight Prohibited: False )

Review CARRILLO Nissan/infiniti/datsun Pro h 3/8 Wmc Bolt Connecting Rods

The **Carrillo SC5450-6** is a premium, high-performance connecting rod designed specifically for the legendary **Nissan/Infiniti/Datsun VR38DE engine**, the powerplant behind the iconic **300ZX Turbo, Z32, and Z33 models**, as well as the **Datsun 280ZX and 300ZX**. Crafted from **forged 4340 chromium-molybdenum alloy steel**, this rod is engineered to deliver exceptional strength, durability, and reliability under extreme stress, making it an ideal upgrade for both street and track applications. The **3/8" wall thickness** ensures a robust yet lightweight construction, optimizing power transfer while minimizing reciprocating mass for improved engine efficiency. Each rod is **shot-peened** to enhance fatigue resistance, reducing the risk of catastrophic failure under high RPM or aggressive driving conditions. The **precision-machined bolt holes** feature a **smooth, interference-fit** design that maximizes clamping force, ensuring consistent bolt tension and preventing loosening under heavy loads. Whether you're running a **turbocharged, supercharged, or naturally aspirated VR38**, the SC5450-6 rod is built to withstand the demands of high horsepower builds, nitrous applications, or even extreme drag racing setups. Carrillo s reputation for **meticulous quality control** means every rod undergoes rigorous inspection, including **magnetic particle and dye penetrant testing**, to guarantee flawless construction. This rod is not just an upgrade it s a **critical component** for those seeking to push the limits of their VR38 engine while maintaining structural integrity and longevity. Perfect for both **restoration projects** and **high-performance modifications**, the Carrillo SC5450-6 is a must-have for enthusiasts who demand the best in performance and reliability.

**Pros and Cons of buying a Carrillo SC5450-6 VR38 Pro-H 3/8" WMC Bolt Connecting Rods**

1. **High-Quality Material:** Carrillo rods are forged from high-strength steel, ensuring durability and resistance to fatigue, which is critical for high-performance engines like the VR38.

2. **Precision Machining:** These rods are manufactured to tight tolerances, reducing the risk of bending or failure under heavy loads, especially in forced induction or high-RPM applications.

3. **WMC Bolt Design:** The WMC (Welded Metal Cap) construction provides a stronger connection between the rod and cap compared to traditional bolted designs, improving rigidity and reducing the chance of rod failure.

4. **Compatibility:** Specifically designed for the Nissan/Datsun/Infiniti VR38 engine, these rods are engineered to match the engine s dimensions and stress points, ensuring proper fitment and performance.

5. **Pro-H Series Benefits:** The "Pro-H" designation suggests enhanced heat resistance and strength, making them suitable for aggressive tuning, including turbocharging or supercharging.

6. **Warranty and Reputation:** Carrillo is a well-regarded brand in the aftermarket, often backed by warranties and a strong reputation for reliability in high-performance applications.

7. **Reduced Vibration:** The design helps minimize rod movement, which can improve engine longevity and reduce wear on other components like bearings and crankshafts.

8. **Ease of Installation:** While still requiring professional installation, these rods are designed to be straightforward to fit, reducing potential complications during rebuilds.

1. **Cost:** High-performance rods like these are significantly more expensive than OEM or aftermarket rods without specialized features, which may be a barrier for budget-conscious builders.

2. **Installation Complexity:** Replacing connecting rods requires specialized tools and expertise. Improper installation can lead to catastrophic engine failure, so DIY attempts are not recommended unless the technician is highly experienced.

3. **Limited Availability:** Specialized rods like these may not be as widely stocked as standard aftermarket parts, potentially requiring special ordering or longer lead times.

4. **Overkill for Stock Applications:** If the engine is not heavily modified (e.g., no forced induction, stock compression, or mild tuning), these rods may offer marginal benefits over high-quality OEM or aftermarket rods, justifying the higher cost.

5. **Potential for Over-Tuning:** Using rods beyond their intended stress limits (e.g., extreme forced induction without corresponding engine support) could still lead to failure if other components (e.g., crankshaft, bearings, pistons) are not upgraded accordingly.

6. **Weight:** While the WMC design is strong, it may add slight weight to the rod assembly compared to lighter aftermarket options, which could have negligible but theoretical impacts on high-RPM performance.

The Carrillo SC5450-6 VR38 Pro-H rods are an excellent choice for enthusiasts pursuing serious engine modifications, particularly those involving forced induction, high compression ratios, or aggressive power targets. Their superior strength, precision, and compatibility make them a reliable upgrade for builders who prioritize durability and performance. However, the high cost and installation complexity mean they are best suited for projects where other components (e.g., crankshaft, bearings, pistons) are also upgraded to match their capabilities.

For stock or mildly tuned engines, standard aftermarket rods or high-quality OEM replacements may suffice without the need for such specialized parts. The decision ultimately depends on budget, tuning goals, and the level of support for the engine s other components.

If you are rebuilding your VR38 engine with plans for forced induction, high compression, or significant power gains (e.g., 300 hp), the Carrillo SC5450-6 rods are a strong recommendation. Pair them with a high-quality crankshaft, bearings, and pistons to ensure the entire assembly is balanced for performance. If your project is more modest, consider evaluating whether the cost and complexity are justified by your specific goals.

Always consult with a reputable engine builder or mechanic to ensure proper installation and compatibility with your engine s other components.

Details:

Carrillo Nissan/Infiniti/Datsun VR38 Pro-H 3/8 WMC Bolt Connecting Rods.

part #: scr54506 prices

• $1437.98-$2189.28

specifications pistonrinro:

• for makes: Nissan, Infiniti, Datsun
• brand: Carrillo
• mpn: Scr5450-6
• part type: Bolt Rod
• air freight prohibited: False

general pistonrinro:

• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts

offer pistonrinro:

• started: April 2, 2026
• quantity: 1
• sold: 0
• availability: In Stock
• options: Ship-to-home

shipping pistonrinro:

• service: Expedited
• class: Expedited
• transit: 5-5 Days
• type: Fixed
• cost: $0.00

returns pistonrinro:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

payments pistonrinro:

• credit card: Discover
• other
• wallet: Paypal

seller pistonrinro:

• rating: 99.6%
• city: Bonita, California
• # reviews: 49758

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