NISSAN 12100-R2002 Rods Forged Nos FJ20E FJ20T 140

( Brand: Nissan ), ( Manufacturer Part Number: 12100-R2002 ), ( Type: Connecting Rod ), ( Country Of Origin: Japan )

Review NISSAN Datsun 140mm Rods Factory Forged Nos

The **Nissan 12100-R2002 (Datsun FJ20E/FJ20T 140 Rods Forged NOS)** is a legendary, high-performance engine that embodies the raw, unfiltered power of classic Japanese motorsport heritage. Built to exacting specifications, this **brand-new-old-stock (NOS)** powerplant represents the pinnacle of early 1970s Japanese engineering, designed for both street and track dominance. The **12100-R2002** is a direct descendant of the iconic **FJ20E and FJ20T** engines that powered Nissan s legendary **Skyline GT-R (R32) and Datsun 240Z** in rally and racing circuits worldwide. This engine features a **forged crankshaft**, a critical component that ensures durability under extreme stress, allowing it to handle high RPMs and heavy loads with ease. The **140-rod design** (a nod to the original **140mm stroke**) enhances low-end torque while maintaining a balanced power delivery, making it ideal for both drag racing and spirited driving.

The **R2002** designation signifies a refined iteration of the original **R2000** engine, incorporating subtle yet meaningful upgrades that improve reliability and performance. The **cast-iron block** is precision-machined to tight tolerances, ensuring optimal compression and power output, while the **forged pistons** and **high-performance connecting rods** deliver exceptional strength and longevity. The **dry-sump lubrication system** (common in racing applications) minimizes oil starvation under heavy G-forces, a critical feature for high-performance driving. The **single-cam, overhead-valve (SOV) design** with **2 valves per cylinder** may seem modest by modern standards, but when paired with a **high-flow intake manifold, aggressive camshaft, and polished cylinder heads**, it produces a **throbbing, linear powerband** that is both exhilarating and dependable.

This engine is not merely a static component it is a **piece of automotive history**, meticulously preserved in **brand-new-old-stock (NOS) condition**, meaning it has been kept in pristine, unopened packaging since its original production run. The **forged internals** (crankshaft, rods, and pistons) ensure that it can handle **high RPMs and heavy modifications** without catastrophic failure, making it a favorite among **JDM enthusiasts, drift tuners, and vintage race car builders**. Whether installed in a **restomod Skyline GT-R, a 240Z, or a custom chassis**, the **12100-R2002** delivers a **guttural, throaty growl** that is unmistakably Japanese raw, unfiltered, and brimming with character.

For those seeking **authentic JDM power**, this engine offers a **perfect blend of nostalgia and performance**, allowing builders to create a machine that not only looks like a classic but **feels and performs like one too**. Whether used in a **street-legal project car, a drift machine, or a track-focused race car**, the **12100-R2002** is a **must-have for purists and performance seekers alike**, offering a **unique combination of heritage, reliability, and raw, unadulterated power**.

Buying a **Nissan 12100-R2002 (Datsun FJ20E/FJ20T) with forged 140-rod crankshaft** is a significant investment in a legendary off-road and performance vehicle. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Legendary Reliability and Durability**

The **Nissan 12100-R2002** (also known as the **Datsun FJ20E/FJ20T**) is one of the most robust and enduring off-road engines ever built. Originally designed for the **Nissan Patrol (Y60)**, it was later adopted by Datsun for the **FJ20/FJ40 series**, proving itself in extreme conditions worldwide. The **R2002** variant is a refined version with improved internals, making it even more durable.

2. **Proven Performance**

The **12100-R2002** is a **2.8L inline-six** with a **140-rod forged crankshaft**, meaning it was built for high-stress applications. This engine is capable of **serious power** when properly modified, making it a favorite among **off-roaders, drift enthusiasts, and tuners**. With the right upgrades (turbocharging, nitrous, or forced induction), it can produce **300 HP** while maintaining reliability.

3. **Off-Road Capability**

The **FJ20/FJ40 platform** is one of the most capable off-road vehicles ever made. The **R2002 engine** is well-suited for **rock crawling, desert racing, and extreme terrain** due to its **torque, simplicity, and durability**. Many owners modify these trucks for **serious off-roading**, including **lift kits, locking differentials, and heavy-duty suspensions**.

4. **Aftermarket Support**

The **Nissan 12100-R2002** has a **massive aftermarket**, with parts available for **engine builds, turbocharging, nitrous, and even modern fuel injection upgrades**. Companies like **Nissan Parts America, Datsun Performance, and independent tuners** provide support for modifications. Additionally, **forged internals (crank, rods, pistons)** are widely available, making it easier to build a **high-performance or extreme-duty engine**.

5. **Classic & Nostalgic Appeal**

The **FJ20/FJ40** is an **iconic off-roader**, especially in the **Datsun/Ford F-Series era**. Owning one connects you to a **legendary off-road legacy**, and the **R2002 engine** is a **high-performance variant** of that heritage. Many collectors and enthusiasts value these trucks for their **history and rarity**.

6. **Modularity & Upgrade Potential**

- **Turbocharging** (popular for **street/performance builds**)

- **Nitrous oxide** (for **quick power boosts**)

- **Supercharging** (less common but possible)

- **Forced induction nitrous** (for **extreme power**)

- **Stock tuning** (for **reliable daily driving with extra power**)

The **forged crank and rods** mean it can handle **much more stress** than a stock engine.

7. **Lower Cost of Ownership (Compared to Modern Trucks)**

While parts can be expensive, the **R2002 engine is extremely reliable** if maintained properly. Many owners **self-rebuild their engines** when needed, keeping costs down. Additionally, **used parts are widely available**, making repairs more affordable than on modern trucks.

8. **Community & Enthusiast Network**

There is a **strong community** of **FJ20/FJ40 and R2002 owners**, with forums (like **FJ40.net, Datsun Patrol Club, and Nissan Patrol forums**), meetups, and events. This makes it easier to **find help, parts, and fellow enthusiasts** who understand the engine s strengths and weaknesses.

---

### **Cons**

1. **High Initial Cost**

A **well-maintained R2002 engine in a FJ20/FJ40** can be **expensive**, especially if it s **low-mileage or in a rare condition**. Prices for **complete trucks** can range from **$15,000 to $50,000 **, depending on condition, modifications, and rarity. Even just **replacing the engine** in a project truck can cost **$8,000 $15,000 ** if you re not doing it yourself.

2. **Complexity & Maintenance Requirements**

- **Valvetrain wear** (timing chain, lifters, and valves can wear out over time)

- **Rod bearing wear** (even with forged rods, proper lubrication is critical)

- **Camshaft durability** (stock cams can wear out; aftermarket cams may require adjustments)

- **Fuel system upgrades** (modern fuel injectors or a **turbo setup** may require **fuel system modifications**)

- **Cooling system** (must be **upgraded for forced induction**)

- **Transmission & drivetrain** (the **manual transmission is strong but can be finicky**; automatic options are rare and often require rebuilds)

3. **Parts Availability & Cost**

While parts are **available**, some **specialty items (like forged pistons, turbo kits, or rare OEM components)** can be **expensive**. If you re **deep in modifications**, you may need to **source parts from multiple suppliers**, increasing costs.

4. **Driving Experience (Compared to Modern Trucks)**

- **Poor fuel economy** ( 10 15 MPG in stock form, worse with modifications)

- **Rough ride** (especially on pavement)

- **No modern tech** (no Bluetooth, minimal electronics, basic instrumentation)

- **Manual transmission** (if not upgraded to an automatic, which is rare and often problematic)

5. **Legal & Insurance Challenges**

- **Modifications (especially turbocharged or heavily modified engines) can make insurance difficult and expensive.**

- **Some areas have restrictions on off-road vehicles** (check local laws before modifying for extreme use).

- **Emissions compliance** (if you plan to drive on-road frequently, you may need **emissions upgrades**).

6. **Project Truck Challenges**

- **Hidden damage** (rust, frame issues, transmission problems)

- **Time-consuming repairs** (some FJ20/FJ40 trucks require **extensive work** to be road-legal)

- **Unpredictable costs** (you may find **unexpected issues** once you start working on it)

7. **Limited Modernization**

While the **R2002 engine is fantastic**, the **rest of the truck is outdated**. If you want **modern features (like a modern transmission, suspension, or electronics)**, you ll need to **budget for significant upgrades**, which can be **costly and complex**.

8. **Resale Value (Not High)**

Unlike **classic cars or rare muscle cars**, **FJ20/FJ40 trucks do not hold value well**. If you ever want to sell, you may **not recover much of your investment**, especially if heavily modified.

---

### **Conclusion**

The **Nissan 12100-R2002 (Datsun FJ20E/FJ20T) with forged 140-rod crankshaft** is one of the **best off-road and performance engines ever made**. It offers **unmatched durability, mod potential, and a legendary reputation**, making it a **fantastic choice for enthusiasts** who prioritize **off-roading, drifting, or extreme modifications**.

However, it is **not a beginner-friendly purchase**. The **high cost, maintenance demands, and complexity** mean that it is **best suited for experienced mechanics or those willing to invest significant time and money** into keeping it running. If you re looking for a **reliable daily driver or a modern truck**, this is **not the right choice**. But if you re **passionate about off-roading, building a monster truck, or preserving a piece of automotive history**, the **R2002 is an incredible engine to own**.

---

### **Recommendation**

You are an **enthusiast who loves off-roading, drifting, or extreme modifications**.

You have **mechanical experience** or are willing to **learn and invest time** in maintenance.

You want a **durable, high-performance engine** that can be **built for serious power**.

You appreciate **classic, rugged vehicles** and don t mind **sacrificing modern comforts**.

Details:

Any questions let me know. Set of 4, new old stock.

part #: 12100r2002 prices

• $98.03-$400.00

specifications pistonrinro:

• for makes: Datsun, Nissan
• brand: Nissan
• mpn: 12100-r2002
• type: Connecting Rod
• country of origin: Japan

general pistonrinro:

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

shipping pistonrinro:

• carrier: USPS
• cost: $25.00
• transit: 7-12 Days
• class: Standard
• service: USPS Ground Advantage
• type: Fixed

payments pistonrinro:

• wallet: Paypal
• credit card: Diners-club
• other

returns pistonrinro:

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

seller pistonrinro:

• rating: 98.0%
• # reviews: 101
• city: Bakersfield, California

offer pistonrinro:

• options: Ship-to-home
• availability: In Stock
• best offers: True
• started: May 14, 2026
• sold: 0
• quantity: 2

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