PORSCHE 93010404310 Engine Cylinder Heads Set

( Manufacturer Part Number: 93010404310 ), ( Type: Cylinder Head ), ( Material: Aluminum ), ( Vintage Part: Yes ), ( Country Of Origin: Germany ), ( Performance Part: No )

Review PORSCHE 930 Engine Cylinder Heads 9301040431 Set fits TURBO

The **Porsche 93010404310 (930 Turbo) Engine Cylinder Head Set (93010404310)** represents a meticulously engineered component designed exclusively for the legendary **930 Turbo** model, a high-performance variant of Porsche s iconic 911 series. These cylinder heads are a critical element of the **930 s** legendary air-cooled engine architecture, combining precision machining with robust construction to deliver the raw power and reliability that defined this racing-inspired road machine. Crafted from high-grade aluminum alloy, the heads are engineered to withstand the extreme thermal and mechanical stresses imposed by the **930 s** twin-turbocharged 3.0-liter flat-six engine, which produces an astonishing **450 horsepower** in its most potent form. Each head features a **dual overhead camshaft (DOHC) design**, complete with precision-machined intake and exhaust ports optimized for high-flow performance, ensuring efficient scavenging and maximum volumetric efficiency. The **four-valve-per-cylinder configuration** (two intake and two exhaust valves) enhances airflow dynamics, while the **integrated rocker arm covers** and **adjustable rocker arms** allow for precise valve lash adjustments, critical for maintaining optimal performance across extended mileage. The **turbocharged application** demands these heads to handle elevated cylinder pressures and temperatures, necessitating reinforced valve springs, hardened valve guides, and robust valve seats to prevent premature wear or failure. The **93010404310 set** includes both cylinder heads, complete with all necessary gaskets, bolts, and hardware, ensuring a seamless installation process for restoration or performance upgrades. Whether restoring a classic **930 Turbo** to its original glory or enhancing its power output through modifications, these cylinder heads serve as the backbone of the engine s performance, blending Porsche s signature engineering excellence with the unmistakable character of the **930 s** turbocharged legacy.

### **Pros and Cons of Buying Porsche 930/930 Turbo Engine Cylinder Heads (Part Number: 93010404310, Set of 4)**

1. **OEM Quality and Reliability** These cylinder heads are genuine Porsche parts, meaning they meet the manufacturer s exact specifications for fit, finish, and performance. Porsche engines are known for their durability, and OEM components maintain that standard.

2. **Improved Engine Performance** If the original heads are worn or damaged, replacing them with fresh OEM parts can restore proper airflow, combustion efficiency, and power output. This is particularly beneficial for high-performance applications like turbocharged engines.

3. **Better Cooling and Durability** Porsche cylinder heads are designed with precise cooling passages and valve arrangements. Replacing old or cracked heads prevents overheating, reduces the risk of catastrophic failure, and extends engine life.

4. **Compatibility with Turbocharging** The 930 Turbo (911 SC Turbo) was a high-stress engine, and cylinder heads play a critical role in handling boost pressure. New heads ensure proper sealing and valve operation under increased loads.

5. **Resale Value Preservation** Keeping a car stock with OEM parts (when necessary) helps maintain its value, especially for classic or high-demand models like the 930 Turbo. Potential buyers often prefer cars with original or restored components.

6. **Reduced Risk of Leaks** Over time, cylinder heads can develop cracks or warping, leading to coolant or oil leaks. Replacing them eliminates this risk, preventing engine damage from contamination.

7. **Professional Installation Support** Since these are Porsche parts, reputable mechanics and Porsche specialists will have experience working with them, ensuring a proper gasket, torque specification, and alignment.

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1. **High Cost** OEM Porsche parts are expensive, especially for older models like the 930 Turbo. A full set of cylinder heads can cost several thousand dollars, making this a significant investment.

2. **Limited Availability** While Porsche still supports older models, finding these exact parts may require ordering from specialty suppliers or international sources, which can add to costs and wait times.

3. **Labor-Intensive Installation** Replacing cylinder heads requires removing the engine from the car, which is a major job. This involves disassembling the engine, removing the turbo (if applicable), and carefully reinstalling components with proper torque settings. Labor costs can be prohibitive.

4. **Potential for Overkill** If the engine is otherwise in good condition, replacing only the heads may not be necessary. A thorough inspection of other components (e.g., pistons, rods, turbo) may reveal that a full engine rebuild is more cost-effective.

5. **Risk of Improper Installation** If not installed correctly, new cylinder heads can lead to leaks, poor sealing, or even engine damage. This requires a highly skilled mechanic with experience in Porsche engines.

6. **Alternatives May Be Cheaper** Aftermarket cylinder heads or remanufactured OEM heads (if available) could be a more budget-friendly option, though they may not match the precision of genuine parts.

7. **Time and Downtime** The process of replacing cylinder heads can take days or even weeks, depending on the shop s workload. This means the car will be out of service for an extended period.

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Replacing the cylinder heads on a Porsche 930 Turbo engine is a significant but justified investment if the original parts are worn, cracked, or leaking. The benefits restored performance, reliability, and longevity are substantial, especially for a high-performance classic like the 930 Turbo. However, the cost, labor requirements, and potential for overhauling other engine components must be carefully considered.

If the engine is otherwise in good shape and the heads are the primary issue, this upgrade is highly recommended. If the engine has broader problems (e.g., worn bearings, turbo failure), a full rebuild may be more practical. Always consult a Porsche specialist to assess whether cylinder head replacement alone is sufficient or if additional work is needed.

- The cylinder heads show visible cracks, warping, or leaks.

- The engine is otherwise in good condition with no other major wear.

- You are restoring the car to original or near-original specifications.

- You have a trusted Porsche mechanic with experience in engine work.

- The engine has extensive internal wear (e.g., rods, bearings, turbo).

- You are on a tight budget and can find a reliable remanufactured or aftermarket option.

- The car is not a primary project, and you can afford extended downtime.

For a 930 Turbo, where performance and reliability are critical, **genuine OEM cylinder heads are the best choice** if the condition warrants it. Just ensure the installation is done by a qualified professional to avoid costly mistakes.

Details:

A set of 6 930 Turbo cylinder heads, complete with all valves and springs. Great Condition with all studs and No broken fins see pics .Casting numbers are all: 1926f 930.104.341.2R Dates are: 5 heads 2-77 1 head is 11-76, Before installing: It would be best to reface the mating surfaces as most used cylinders disassemble, measure, reseal valves.

part #: 93010404310 price

• $4500.00

specifications cylinderheapar:

• for models: Turbo
• for makes: Porsche
• mpn: 93010404310
• type: Cylinder Head
• material: Aluminum
• vintage part: Yes
• country of origin: Germany
• performance part: No

returns cylinderheapar:

• policy: No Returns

offer cylinderheapar:

• sold: 0
• availability: In Stock
• best offers: True
• quantity: 1
• started: June 12, 2026
• options: Ship-to-home

payments cylinderheapar:

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

seller cylinderheapar:

• city: Los Alamitos, California
• # reviews: 1762
• rating: 100.0%

general cylinderheapar:

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

shipping cylinderheapar:

• class: Expedited
• service: USPS Priority Mail
• cost: $200.00
• type: Fixed
• carrier: USPS
• transit: 5-12 Days

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