SPEEDWAY MOTORS 9108745 Steel Exhaust Valves Set 1.60 Std.

( Brand: Speedway Motors ), ( Manufacturer Part Number: 9108745 ), ( Part Type: Valve Exhaust Motor ), ( California Prop 65 Warning: False )

Review SPEEDWAY MOTORS Super Duty Steel Exhaust Valves 1.60 Inch Std. Length Set Of fits STD

The **Speedway 9108745 Steel Exhaust Valves (1.60 Standard Set)** represent a premium choice for high-performance engine applications, meticulously engineered to deliver exceptional durability, reliability, and thermal efficiency. Designed for engines demanding superior airflow and heat resistance, these valves are crafted from **high-grade 1.60 steel**, a material renowned for its strength, corrosion resistance, and ability to withstand extreme operating temperatures without warping or losing structural integrity. The **1.60 alloy composition** ensures optimal hardness and wear resistance, making these valves ideal for aggressive driving conditions, forced induction setups, or high-revving engines where conventional valves may falter. Each valve in this set is precision-machined to exacting tolerances, featuring a **smooth, polished stem and seat** to minimize friction and maximize sealing performance, reducing the risk of carbon buildup and valve stickiness a common issue in high-stress applications. The **standard head design** balances airflow efficiency with structural robustness, ensuring consistent performance across a wide range of RPMs while maintaining compatibility with most modern engine builds. Whether integrated into a naturally aspirated powerplant or paired with a turbocharger or supercharger, these valves excel in maintaining optimal exhaust flow, reducing backpressure, and enhancing overall engine breathing. Built to meet the demands of enthusiasts and professional tuners alike, the Speedway 9108745 set is a testament to quality engineering, offering a reliable upgrade for those seeking to push their engine s limits without compromising on longevity or performance.

### **Pros and Cons of buying a Speedway 9108745 Steel Exhaust Valves (1.60 Std Set)**

1. **High-Quality Material** Made from high-grade steel, these valves are designed to withstand extreme temperatures and stress, offering durability compared to standard valves.

2. **Improved Performance** Steel valves can enhance engine efficiency by maintaining better heat retention and reducing thermal expansion, which may lead to improved power output and reliability.

3. **Longer Lifespan** Compared to standard valves, steel valves are less prone to warping or cracking under high heat, potentially extending the life of the engine components.

4. **Compatibility** Specifically designed for the 1.6L engine (likely a common model in European cars), ensuring a proper fit without modification.

5. **Cost-Effective Upgrade** While more expensive than OEM valves, they are often more affordable than full aftermarket performance valve sets, offering a balance between cost and performance.

6. **Reduced Risk of Failure** Steel valves are less likely to fail due to heat-related issues, reducing the chance of catastrophic engine damage from valve breakage.

1. **Higher Initial Cost** These valves are more expensive than standard OEM valves, which may be a barrier for budget-conscious buyers.

2. **Potential Overkill for Stock Engines** If the engine is not heavily modified or stressed, these valves may not provide noticeable benefits, making the upgrade unnecessary.

3. **Installation Complexity** Replacing valves often requires removing the cylinder head, which may be labor-intensive and time-consuming, especially for inexperienced DIYers.

4. **Compatibility Risks** If the engine has been modified (e.g., forced induction, high RPM tuning), these valves may not be sufficient, and more advanced materials (like titanium) might be needed.

5. **Warranty Concerns** If the engine is still under warranty, replacing valves with aftermarket parts could void coverage, depending on the manufacturer s policies.

6. **Limited Performance Gain** While steel valves improve durability, they may not significantly boost horsepower or torque unless paired with other modifications (e.g., tuning, upgraded springs).

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### **Conclusion**

The Speedway 9108745 steel exhaust valves are a solid mid-range upgrade for engines that experience excessive heat or stress, particularly in high-mileage or performance-oriented applications. They strike a balance between cost and performance, offering better durability than standard valves without the premium price of exotic materials like titanium. However, they are not a universal solution drivers with stock engines or those on a tight budget may find the benefits marginal compared to the cost.

If the engine is prone to valve failure, runs hot, or is part of a modified setup, these valves are a worthwhile investment. For stock engines with no signs of heat-related issues, the upgrade may not be justified. Always ensure compatibility with the engine s specific requirements and consider consulting a mechanic if unsure.

### **Recommendation**

- The engine shows signs of valve stress (e.g., warping, cracking, or overheating).

- The vehicle is used for spirited driving, towing, or high-load conditions.

- The budget allows for a performance-oriented upgrade beyond OEM parts.

- The engine is stock and runs reliably without heat issues.

- The vehicle is primarily used for light, everyday driving.

- A full aftermarket valve set (e.g., titanium) is desired for maximum performance.

For best results, pair this upgrade with proper maintenance, such as regular valve adjustments and high-quality lubrication. If in doubt, consult a trusted mechanic to assess whether the engine would benefit from steel valves.

Details:

Headquarters. Valve stem diameter - 11/32. Part # 9108745 Condition New Brand Speedway Motors Sold Kit Details These are high strength, one-piece stainless steel valves that priced for a claimer motor, but superior to most mid-priced. Chrome stems and hard tips, For: Small Block Chevy, High strength one-piece design, Undercut swirl-polished heads for increased flow, Sold as a set of 4 - complete one cylinder head Super Duty Steel Exhaust Valves, 1.60 Inch, Std.

Features a chrome stem and hardened tip.

part #: 9108745 price

• $60.99

specifications emissyste:

• for models: Std
• brand: Speedway Motors
• mpn: 9108745
• part type: Valve Exhaust Motor
• california prop 65 warning: False

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: New

offer emissyste:

• sold: 0
• started: February 12, 2026
• availability: In Stock
• options: Ship-to-home

shipping emissyste:

• cost: $13.99
• type: Fixed
• service: Economy, Expedited
• class: Economy, Expedited
• transit: 5-5 Days

seller emissyste:

• # reviews: 349041
• city: Lincoln, NE
• rating: 99.7%

payments emissyste:

• credit card: Mastercard
• wallet: Google-pay
• other

returns emissyste:

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

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