SATURN SATURNSL2 Cylinder Head Dohc 1.9L

( Manufacturer Part Number: SATURNSL2 ), ( Part Type: Cylinder Head ), ( Id: A0ca29dc-122e-4186-be47-b369503fcefa ), ( Interchange: 306-1978 )

Review SATURN Cylinder Head Assembly Oem 1.9l Dohc fits SL2 1999

The **Saturn SL2 1999 1.9L DOHC Cylinder Head** is a meticulously engineered component designed to deliver exceptional performance and reliability within the iconic Saturn SL2, a vehicle renowned for its compact yet spirited driving dynamics. This cylinder head, crafted for the 1.9-liter Direct Injection (DOHC) inline-four engine, embodies a blend of precision engineering and advanced metallurgy to ensure optimal combustion efficiency, durability, and power output. The head features a sophisticated **Dual Overhead Camshaft (DOHC)** design, where two camshafts one controlling the intake valves and the other the exhaust work in unison to synchronize airflow with precision. This architecture enhances breathing capability, allowing for improved throttle response, smoother power delivery, and reduced emissions, all while maintaining the engine s compact footprint. The **four-valve-per-cylinder** configuration further optimizes combustion by maximizing valve lift and overlap, contributing to a more efficient and responsive engine.

Constructed from high-grade **cast aluminum**, the cylinder head is engineered to dissipate heat effectively while maintaining structural integrity under high-stress conditions. The head incorporates **hydraulic valve lifters**, eliminating the need for regular valve adjustment and ensuring consistent valve clearance throughout the engine s lifespan. The **intake and exhaust ports** are carefully contoured to promote laminar airflow, reducing turbulence and friction losses, which in turn enhances volumetric efficiency and overall engine performance. The **spark plug bores** are precisely machined to accommodate standard NGK or Denso plugs, ensuring reliable ignition and consistent combustion cycles. Additionally, the head is equipped with **integrated valve cover mounts**, providing a secure and leak-free seal to prevent oil contamination and maintain optimal operating conditions.

For enthusiasts seeking to restore or upgrade their Saturn SL2, this cylinder head serves as a critical component that bridges performance and longevity. Whether used in a stock application or as part of a modified engine build, its robust construction and efficient design make it a reliable choice for maintaining the SL2 s signature blend of agility and practicality. The **1999 model year** specification ensures compatibility with the engine s original tuning and calibration, making it an ideal replacement for those looking to preserve the vehicle s heritage while benefiting from modern reliability standards. With its attention to detail in both form and function, this cylinder head exemplifies the engineering prowess that underpins the Saturn SL2 s enduring appeal.

The Saturn SL2 from 1999, specifically the 1.9L DOHC (Direct Overhead Cam) engine variant, is a unique and somewhat niche vehicle. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the 1999 Saturn SL2 (1.9L DOHC Engine)**

1. **Distinctive Design and Branding**

The SL2 was a limited-edition, high-performance model from Saturn, designed to appeal to enthusiasts with its sporty styling, aggressive stance, and unique branding. It was one of the first production cars to feature a "sports car" aesthetic within Saturn s lineup, making it stand out in a sea of mainstream sedans.

2. **Performance for Its Class**

The 1.9L DOHC engine was a turbocharged inline-four (derived from the Opel/Vauxhall X20XE engine) producing around **170 horsepower** (depending on tuning and modifications). While not a supercar, it offered a noticeable boost in power compared to Saturn s standard engines of the era. The SL2 was also equipped with a limited-slip differential (LSD) and sport-tuned suspension, enhancing its driving dynamics.

3. **Rarity and Collectibility**

The SL2 was produced in very limited numbers (around **1,000 units**), making it a rare find today. Its exclusivity has contributed to its value as a collector s item, especially among Saturn and Opel enthusiasts. Owners often appreciate the uniqueness of the model.

4. **Turbocharged Engine Potential**

The 1.9L DOHC engine is known for being mod-friendly. With aftermarket support, it can be tuned to produce **200 horsepower** with relatively straightforward upgrades (e.g., turbo upgrades, fuel system tweaks, or camshaft swaps). This makes it an attractive option for those interested in light modifications.

5. **Decent Handling for a Front-Wheel Drive Car**

The SL2 came with a sport-tuned suspension, quicker steering, and an LSD, which improved its cornering and straight-line stability compared to standard Saturn sedans. While not a rear-wheel-drive sports car, it drove better than most of its contemporaries in the same segment.

6. **Saturn s Warranty and Reliability (Early Years)**

Saturn was known for offering **extended warranties** (up to 10 years/100,000 miles on powertrain components) in the late '90s, which provided peace of mind for early owners. The 1.9L DOHC engine, when properly maintained, was generally reliable for its time.

7. **Affordable Entry Point for Enthusiasts**

Due to its rarity, parts can be expensive, but the base price of the car itself (if found in good condition) is often reasonable compared to other classic sports cars. This makes it a more accessible option for those wanting a unique project car.

---

### **Cons of the 1999 Saturn SL2 (1.9L DOHC Engine)**

1. **Turbocharger Reliability Issues**

The most significant drawback of the 1.9L DOHC engine is its **turbocharger reliability**. Many early examples suffered from **turbo failure** due to poor cooling, oil starvation, or internal wear. The stock turbo (a Garrett T25) was not designed for high RPM or aggressive driving, leading to common failures around **80,000 120,000 miles**. Replacing the turbo is a costly and labor-intensive process.

2. **Oil Consumption and Maintenance Needs**

The 1.9L DOHC engine is notorious for **burning oil**, especially when modified or driven aggressively. Regular oil changes and monitoring oil levels are critical. Some owners report consuming **1 quart per 1,000 miles** under heavy use, which can lead to premature engine wear if neglected.

3. **Limited Aftermarket Support**

While the engine is mod-friendly, aftermarket parts (especially turbochargers, intercoolers, and supporting components) can be **expensive or hard to find**. Many modern turbo upgrades require custom fabrication, increasing costs.

4. **Rust and Corrosion Concerns**

Like many late '90s GM vehicles, the SL2 can suffer from **rust**, particularly in the wheel wells, rocker panels, and undercarriage. A thorough inspection of the body and chassis is essential before purchasing.

5. **Transmission and Drivetrain Weaknesses**

The SL2 came with a **5-speed manual or 4-speed automatic**, neither of which were known for longevity. The manual transmission can be finicky, while the automatic may require frequent fluid changes to avoid slipping or failure. The LSD, while useful, can also be a point of failure if not properly maintained.

6. **Electrical and Computer Issues**

Saturn s early models had a reputation for **electrical gremlins**, including faulty sensors, wiring issues, and computer glitches. The SL2 is no exception, and owners often report problems with the **ECU, fuel injectors, or sensors** that require diagnostics and repairs.

7. **Limited Market for Parts and Service**

Because the SL2 is so rare, finding a mechanic familiar with its quirks can be difficult. Most GM dealers may not carry specialized parts, forcing buyers to rely on online marketplaces or Opel/Vauxhall specialists.

8. **High Cost of Repairs**

Even if parts are available, labor costs can be prohibitive. The turbo alone can cost **$1,000 $2,000 ** to replace, and specialized labor (e.g., for engine rebuilds) adds to the expense.

9. **Driving Experience Limitations**

While the SL2 handles better than most Saturns, it is still a **front-wheel-drive car** with a relatively heavy weight distribution. It lacks the balance and agility of a true sports car, and the turbo lag can be noticeable at low RPM.

10. **Depreciation and Resale Value**

While the SL2 may hold value as a collector s item, its **daily-driving practicality is limited**. Most buyers are interested in it for nostalgia or modification potential rather than as a reliable daily driver, which can make resale challenging.

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### **Conclusion**

- **Appreciates rarity and collectibility** and is willing to pay a premium for a one-of-a-kind vehicle.

- **Plans to modify or restore the car** and is prepared for the associated costs and challenges.

- **Has mechanical experience** or access to a skilled mechanic familiar with turbocharged inline-four engines.

- **Views it as a project car** rather than a reliable daily driver.

However, for **casual buyers, daily drivers, or those seeking low-maintenance ownership**, the SL2 is **not an ideal choice**. The turbocharger issues, oil consumption, and high repair costs make it a **high-risk, high-reward** purchase. If you re not prepared for potential engine failures, electrical quirks, or the expense of keeping it running, the SL2 may not be worth the hassle.

---

### **Recommendation**

- **Get a thorough pre-purchase inspection** from a mechanic experienced with turbocharged Opel/Vauxhall engines. Focus on the **turbo, oil consumption, transmission, and rust**.

- **Check the mileage** cars under **100,000 miles** are preferable, but even then, verify turbo history.

- **Budget for immediate repairs** expect to spend **$1,000 $3,000 ** on initial fixes (turbo, oil system, transmission fluid, etc.).

- **Consider a used turbo** (if available) to avoid the cost of a new one, but ensure it s in good condition.

- **Plan for long-term maintenance** this is not a "set it and forget it" car.

- **Opel/Vauxhall Vectra GT (1.9T)** Similar engine, more parts availability.

- **Mazda Miata (NA/NB)** More reliable, better handling, and easier to modify.

- **Toyota MR2 (W20)** A more practical turbocharged sports car with better reliability.

- **Consider a Saturn Ion SL1** (if you like the SL branding) or a **Honda Civic Si** for a more balanced enthusiast car.

- **Be realistic about costs** expect to spend **$5,000 $10,000 ** to get it to a drivable and enjoyable state, even if it s just a "fun" project car.

- **Join Saturn/Opel forums** (e.g., SaturnSL2.com, Turbocharged.net) to learn from others experiences and find parts.

The 1999 Saturn SL2 is a **fantastic car for the right owner** someone who loves unique projects, isn t afraid of mechanical challenges, and is willing to invest

Details:

Search for more parts SATURNs SERIES. Cylinder Head. Model: SATURNs SERIES.

part #: saturnsl2 prices

• $112.50-$187.50

specifications cylinderheapar:

• for makes: Saturn
• for years: 1999
• mpn: Saturnsl2
• part type: Cylinder Head
• id: A0ca29dc-122e-4186-be47-b369503fcefa
• interchange: 306-1978

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

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