PORSCHE 9281043461R Engine Cylinder Head Valves Springs 114K LM04

( Manufacturer Part Number: 9281043461R ), ( Type: Cylinder Head )

Review PORSCHE Engine Cylinder Head Valves And Springs 114k Pass fits 928 1982

The **Porsche 928 104.3461R (1982) LM04 Engine Cylinder Head Valve Springs Assembly** represents a meticulously crafted, high-performance component designed exclusively for the iconic **928 S4** model, specifically tailored to the **104.3461R** engine variant introduced in 1982. This rare and sought-after part is integral to maintaining the legendary reliability and exhilarating performance of the 928 s air-cooled, 5.0-liter (4,957 cc) inline-six engine, which was engineered to deliver a balance of power, precision, and durability. The **LM04 valve springs** are a critical element of the cylinder head assembly, responsible for ensuring proper valve closure, minimizing valve float at high RPM, and preserving the engine s optimal breathing characteristics essential for sustaining the 928 s signature smooth yet spirited driving experience. Crafted from high-grade, heat-treated steel, these springs are engineered to withstand the extreme forces generated by the 928 s high-revving, naturally aspirated engine, which could reach up to **6,500 RPM** in its most aggressive configurations. The **LM04 designation** indicates a later revision of the valve spring design, incorporating refinements to improve longevity and performance, making this part particularly valuable for restorers and enthusiasts aiming to restore or enhance their 928 s original specifications. When installed as part of a complete **cylinder head assembly**, these valve springs work in tandem with the **tappets, rocker arms, and pushrods** to ensure precise valve timing, reducing wear on the camshaft lobes and minimizing the risk of valve damage under heavy loads. The **1982 model year** further adds to the part s desirability, as it represents a transitional phase in the 928 s evolution, where Porsche fine-tuned the engine s balance between power and refinement. Whether used in a classic restoration project or as a replacement for worn components in a well-maintained 928, this valve spring assembly is a testament to Porsche s engineering excellence and a vital component for preserving the integrity of one of the most sophisticated grand tourers of the 1980s.

### **Pros and Cons of Buying a 1982 Porsche 928 with a 928 Engine (LM04) and Cylinder Head Valve Springs**

#### **Pros**

1. **Classic Porsche Engineering and Prestige**

The 928 is one of Porsche s most refined and luxurious grand tourers, blending German engineering with high-performance capabilities. Its V8 engine, rear-wheel-drive layout, and handcrafted build give it a timeless appeal that commands respect among automotive enthusiasts.

2. **Strong V8 Engine (LM04)**

The LM04 engine (installed in 1980 1986 models) is a robust 4.5L (later 4.7L) air-cooled V8 that produces around **300 320 hp** in its best form. When properly maintained, it can deliver reliable performance, especially in a well-preserved example. The engine s simplicity (compared to modern turbocharged units) makes it easier to work on for those with mechanical skills.

3. **Reliability (When Well-Maintained)**

Porsche s air-cooled engines, including the LM04, are known for longevity if they receive regular maintenance. Many 928s with original engines have exceeded **200,000 miles** with proper care. However, neglect such as ignored valve springs, worn camshafts, or neglected cooling systems can lead to catastrophic failure.

4. **Classic Porsche Driving Experience**

The 928 offers a **balanced, rear-wheel-drive** driving experience with precise steering, a firm but comfortable ride, and excellent handling for its size. The manual transmission (if available) provides a more engaging driving experience than modern automatics.

5. **Potential for Restoration and Modifications**

The 928 has a strong aftermarket, with parts available for restoration, performance upgrades (e.g., **cylinder head work, camshafts, or fuel injection tuning**), and cosmetic enhancements. A well-restored example can appreciate significantly in value.

6. **Luxury and Comfort**

The 928 was designed as a grand tourer, featuring **leather interiors, power windows, cruise control, and a spacious cabin**. Its size (longer than a 911) makes it comfortable for long drives, though it lacks modern tech features.

7. **Investment Potential (If Rare and Well-Kept)**

Some 928 models, especially low-mileage or restored examples, can appreciate in value over time, particularly if they retain originality or have desirable options (e.g., **manual transmission, leather interior, or specific paint colors**).

---

#### **Cons**

1. **High Maintenance Costs**

- **Valve springs and retainers** (your specific mention of valve springs suggests this is a known weakness **LM04 engines are notorious for valve spring failure**, often requiring **replacement every 50,000 100,000 miles** if not already done).

- **Camshaft wear** (can lead to **valve float or excessive noise**).

- **Cooling system issues** (thermostats, water pumps, and radiators wear out and must be replaced).

- **Fuel injection problems** (early models had carburetors, but later fuel-injected versions can develop **sensor or pump failures**).

- **Transmission issues** (automatics, in particular, can be finicky and require **fluid changes and valve body servicing**).

2. **Valvetronic or Fuel Injection Reliability**

The **LM04 engine (1982 model) likely has a carbureted or early fuel-injected system**, which can be less reliable than later models. **Fuel injection systems** (introduced in 1984) require **regular cleaning and sensor replacements** to avoid misfires or poor performance.

3. **Electrical and Modern Tech Challenges**

The 928 is **notoriously difficult to work on electrically** compared to modern cars. Issues like **faulty sensors, wiring harness problems, or alternator failures** can be frustrating to diagnose and repair. Many mechanics are unfamiliar with Porsche s older electrical systems.

4. **Rust and Bodywork Concerns**

Many 928s suffer from **rust in the wheel wells, sills, and undercarriage**, especially in older examples. Bodywork repairs can be **expensive and labor-intensive** due to the car s size and weight.

5. **High Insurance and Storage Costs**

Classic Porsches, especially high-performance models like the 928, can be **expensive to insure**. Additionally, **specialty storage (climate-controlled) is recommended** to prevent further deterioration.

6. **Limited Modern Conveniences**

The 928 lacks **modern safety features (airbags, ABS, modern electronics), comfort tech (Bluetooth, navigation), and fuel efficiency**. Driving one today means **compromising on practicality** for the sake of nostalgia and performance.

7. **Market Saturation and Value Depreciation**

While some 928s appreciate, **many examples are overpriced for their condition**. Buyers must be cautious of **overinflated prices** for cars needing major work. The market is **flooded with projects**, making it difficult to find a truly "drive-ready" example without a premium.

8. **Driving Experience Limitations**

- **Manual transmission models** (if available) are **heavy and stiff** to shift, requiring significant effort.

- **Automatic transmissions** (if present) can be **slow and unreliable** without proper maintenance.

- **Braking and suspension** are adequate but **not as refined as modern systems**, leading to **less precise feedback** for the driver.

---

### **Conclusion**

Buying a **1982 Porsche 928 with an LM04 engine and valve spring issues** can be a **rewarding but high-risk endeavor**. The car offers **timeless luxury, strong performance, and a classic Porsche experience**, but it comes with **significant maintenance challenges**, particularly with **valve springs, cooling systems, and electrical components**.

If you are **mechanically inclined, financially prepared for repairs, and willing to invest time in restoration**, a 928 can be an **excellent project** with long-term appreciation potential. However, if you are **not ready for the commitment**, the costs (both financial and time-consuming) may outweigh the enjoyment.

---

### **Recommendation**

- **Look for a 928 that has already had the valve springs replaced** (this is a **must** for the LM04).

- **Prioritize a well-documented service history**, especially for **camshafts, cooling system, and fuel injection**.

- **Consider a later model (1984 )** with **fuel injection** (more reliable than carburetors) and **ABS** (if available).

- **Budget for at least $50,000 $80,000** for a **restored, low-mileage example** (prices vary widely based on condition).

- **Buy a project car** (expect to spend **$20,000 $40,000** for a basic example).

- **Immediately address the valve springs** (this is a **critical first step** to prevent engine damage).

- **Get a pre-purchase inspection (PPI) from a Porsche specialist** to assess **camshaft wear, cooling system, and electrical issues**.

- **Factor in long-term costs** budget for **annual maintenance (oil changes, cooling system flushes, fuel injection cleaning)**.

- **Consider a more modern Porsche (e.g., 911 Turbo, 993, or 996) with lower maintenance demands.**

- **Rent or lease a classic Porsche** before committing to ownership to experience it without the responsibility.

- **Join Porsche owner forums (e.g., Porsche Club of America, 928-specific groups)** to learn from experienced owners about common pitfalls.

### **Final Verdict**

The **1982 Porsche 928 is a fantastic car for the right owner** one who **values classic engineering, is prepared for maintenance, and enjoys the restoration process**. However, it is **not a car for casual buyers** who want a **plug-and-play classic**. If you are **serious about owning one**, **prioritize valve spring replacement, get a thorough inspection, and budget for ongoing care** otherwise, you may find yourself **out of pocket and out of patience** before long.

Details:

SLIGHT DAMAGE Works as should. Larsen Motors. 1982 Porsche 928 Engine Cylinder Head w/ Valves Springs 114k PASS LM04, This cylinder head is in good condition with minor cosmetic flaws. 1982 Porsche 928sVin - WP0JA0924CS821911Mileage 114,079kEngine 4.5L V8 M28.16Transmission A22.01 3-Speed Auto Body Coupe Exterior Color Silver Interior Black Stock # LM04, Removed From: 1983 928S with 126,245 miles, Please review all pictures to assess the condition of item.

part #: 9281043461r prices

• $107.99-$413.99

specifications cylinderheapar:

• for makes: Porsche
• for years: 1982
• mpn: 9281043461r
• type: Cylinder Head

offer cylinderheapar:

• availability: In Stock
• started: March 26, 2026
• options: Ship-to-home
• quantity: 1
• sold: 0
• best offers: True

seller cylinderheapar:

• city: Pomeroy, Pennsylvania
• # reviews: 8212
• rating: 98.6%

shipping cylinderheapar:

• class: Economy
• type: Calculated
• cost: $95.42
• service: UPS Ground Saver, FedEx Ground Economy
• transit: 5-12 Days
• carrier: UPS, FedEx

payments cylinderheapar:

• credit card: Visa
• wallet: Paypal
• other

general cylinderheapar:

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

returns cylinderheapar:

• paid by: Buyer
• time: 60 Days
• policy: Returns Accepted

Porsche 9281043461R Is Similar To:

• 021.101.3710 Vw Porsche Rebuilt Cylinder Heads Part (38.8% similar) Look at the photos for overall condition. These came with a parts car I bought many years ago...(February 16th, 2019)
• 021198009d Victor Reinz Engine Head Gasket Kit Porsche Free Shipping (38.5% similar) 7l '69-'73, victor rein this is a great kit to get from. This is the complete top half cylinder head gasket kit, includes all those special gasket, and o-rings, making project get completed correct way in one day. 7l from '69-' fits porsche engine head gasket kit. Get one today with free shipping...(April 27th, 2018)
• Temperature 022906041a Vw Head Porsche Iv 914 Type Sensor (19.3% similar) ...(April 10th, 2015)
• 039 101 351e Porsche Nos Cylinder Heads Litre (37.6% similar) Still coated with the original coastline. Porsche part number cast in heads 371A. In original porsche boxes. Liter engine from these heads are new bare not rebuilt. Made in Germany. Porsche part number on both boxes 351E. Excellent original condition no broken fins. Shipping USPS priority mail. Pair...(October 20th, 2018)
• 039.124.371a Porsche 914 2.0l Cylinder (34.9% similar) Is less than what I paid to have these done cores supplied. Cylinder heads. One of the chambers has some small dents indicating a likely previous dropped valve at point. Pair of porsche one exhaust stud has been weld repaired. This one was a later model and has the air injection ports welded valve ...(October 21st, 2017)
• 311906041a Porsche 912 914 Cylinder Head Temperature Sensor New Ns (46.8% similar) Pleasure doing business with you. Good luck on any of your future porsche endeavors. Please do so prior to making the purchase. Made by bosch please pay close attention to all of the pictures. If for any reason you are not satisfied please and we'll discuss it and we'll do anything on our part to ...(June 7th, 2016)
• 616.104.301.03 Porsche Cylinder Head 10 (37.8% similar) ...(December 13th, 2016)
• Smog Porsche Sc 61610430102 912 Head Original 356c Cylinder Used Pre (44.9% similar) Varies by the country. For sale a used original porsche 356C sc 912 cylinder head 2 pre smog...(May 3rd, 2015)
• 1969 901.104.306.1r 911t Cylinder 1-69 Porsche Heads 911 2.0 K1819d (40% similar) Part #:901.104.306.1R prices...(April 11th, 2015)
• 9011043061r1k1819d Porsche Early Cylinder Heads (35.6% similar) Not cleaned. Complete with valves. Came off 68 911T. Compete good used. 1 head has 2 broken fins. Pipe leaning against wall fell on it. 1 set of 6 heads...(September 7th, 2018)
• 911-104-004-00 Oe Porsche 911 Cylinder (31.7% similar) 5 available dates are 6/7 2, 8/8 71, and 2 box dimensions weight will change if more than 1 purchased. Each shipping calculated per head. Will fit 911T with mechanical injection and 1973 cis. Porsche 911 cylinder heads, casting number or, part...(January 27th, 2018)