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OE MATCH
- Porsche 914 (1970-1976)
- Porsche 912E 4CYL 1976
Long Cast Iron Cylinder Kit – Set of 4
Build the ultimate high-capacity Type 4 engine with this OE
Match Long Cast Iron Cylinder Kit, designed for Volkswagen Type 4
engines fitted to the Porsche 914 and Porsche 912E.
Fits:
- Porsche 914 (1970-1976)
- Porsche 912E 4CYL 1976
Available in 103mm, 104mm or 105mm bore sizes, these premium cast iron cylinders are specifically manufactured for long stroke and long connecting rod engine builds. Each cylinder is 14.6mm longer than a standard Type 4 cylinder and is supplied ready to be cut to the required height, allowing engine builders to achieve the exact deck height for custom performance applications.
Manufactured from high-strength cast iron for exceptional durability and wear resistance, these cylinders are intended for serious performance and competition engines where precision and flexibility are essential.
Please Note:
Available
in 103mm, 104mm and 105mm bore sizes.
Both
the cylinder heads and crankcase must be machined to accept the larger
bore.
Cylinders
are 14.6mm longer than standard and are designed to be cut to
fit for long stroke or long rod engine combinations.
Professional
engine machining and assembly are recommended.
What Do Engine Cylinders Do?
Engine cylinders provide the precision-machined bores in which the pistons travel, forming the combustion chambers that generate engine power.
Their primary functions include:
- Guiding piston movement
- Maintaining combustion chamber compression
- Providing a durable wear surface
- Dissipating combustion heat
- Supporting efficient engine operation and reliability
Cylinder accuracy is critical for achieving optimum compression, oil control and long-term engine performance.
Why Do Engine Cylinders Wear Out?
Engine cylinders are continually exposed to high temperatures, combustion pressures and piston movement throughout their service life.
Common causes of wear include:
- High mileage
- Poor lubrication
- Engine overheating
- Worn piston rings
- Dirt or debris entering the engine
- Detonation and excessive engine loads
As the cylinder bores wear, compression decreases, oil consumption rises and engine performance gradually deteriorates.
Why Upgrade to Long Big Bore Cylinders?
Long cylinders are specifically designed for custom Type 4 engine builds using long stroke crankshafts or longer connecting rods.
Their extended length provides engine builders with additional material that can be machined to achieve the precise deck height required for a particular engine specification.
Benefits include:
- Suitable for custom long stroke engines
- Compatible with long connecting rod combinations
- Allows precise deck height adjustment
- Available in 103mm, 104mm and 105mm bore sizes
- Increases engine capacity and performance potential
- Strong cast iron construction for maximum durability
- Ideal for high-performance road and motorsport engines
This flexibility makes them the preferred choice for bespoke engine builds where maximum performance and accurate engine geometry are essential.
When Should They Be Replaced?
Replacement or upgrading is recommended when:
- Cylinder bores are worn, tapered or scored
- Compression readings are below specification
- Oil consumption has increased significantly
- The engine is undergoing a complete performance rebuild
- A long stroke or long rod engine is being built
- Existing cylinders have suffered heat damage or corrosion
Installing a new long cylinder kit during an engine build provides the foundation for a reliable, high-performance Type 4 engine.
Porsche 914 & 912E Type 4 Performance Engine Components
When building a custom Type 4 engine, every component must work together to achieve the desired capacity, compression ratio and deck height. Long cylinders provide the flexibility required for stroked crankshaft and long connecting rod combinations, allowing experienced engine builders to machine the cylinders to the exact dimensions needed for a precision-built engine.
Manufactured from durable cast iron, these OE Match long cylinders are engineered for demanding applications where strength, reliability and accurate machining are essential. Whether you're building a powerful fast road engine or a dedicated competition motor, they provide the ideal foundation for a bespoke Type 4 build.
Benefits of the Long Cast Iron Cylinder Kit
- Available in 103mm, 104mm and 105mm bore sizes
- Specifically designed for long stroke and long rod engines
- 14.6mm extra cylinder length for custom machining
- Increases engine capacity and performance potential
- Durable cast iron construction
- Excellent wear resistance
- Precision engineered for professional engine builders
OE Match Replacement Engine Pistons – Precision Fit and Reliability for Porsche Engines
The pistons are the driving force behind every Porsche engine, converting combustion pressure into the rotational energy that powers your car. Over time, heat, friction, and high RPM operation can cause wear and damage, leading to reduced efficiency and performance. Replacing worn pistons with OE Match precision-engineered components restores your engine’s original responsiveness, balance, and compression integrity.
At Design911, we offer a comprehensive range of OE Match replacement pistons crafted to the same dimensions, materials, and performance standards as original components. Each piston is precision-machined from high-strength aluminium alloy, providing excellent heat dissipation, reduced friction, and reliable operation in both naturally aspirated and turbocharged engines.
These high-quality pistons deliver the perfect balance of performance, longevity, and affordability — making them ideal for rebuilds, restorations, or preventative maintenance.
What Do OE Match Engine Pistons Do?
Pistons are the heart of your engine’s combustion cycle, compressing the air-fuel mixture and transferring the resulting explosion’s energy through the connecting rods to the crankshaft.
Core Functions:
- Convert
combustion energy into motion, powering the crankshaft.
- Maintain
consistent compression for efficient combustion.
- Seal
the combustion chamber, preventing oil contamination or pressure loss.
- Contribute to power delivery, fuel economy, and engine smoothness.
A set of well-balanced pistons ensures smooth performance, optimal efficiency, and reduced wear across your Porsche’s engine.
Why Do Pistons Fail?
Even the most robust pistons degrade over time due to the extreme stresses inside a high-performance engine. Heat, contamination, and poor lubrication are the primary culprits behind piston wear and failure.
Common Causes of Piston Failure Include:
- Scuffing
and scoring from oil starvation or contaminated lubrication.
- Cracking
or pitting caused by detonation or overheating.
- Worn
piston rings leading to oil consumption and compression loss.
- Carbon
build-up, reducing sealing efficiency and combustion quality.
- Incorrect clearances during rebuilds or installation.
Replacing worn pistons ensures your Porsche’s engine maintains proper compression, smooth power delivery, and long-term reliability.
Why Replace with OE Match Pistons?
Choosing OE Match replacement pistons guarantees consistent fit, performance, and longevity while maintaining the authentic driving feel of your Porsche. These components are designed for direct installation without modification and are ideal for daily-driven, performance, or restoration projects.
Key Benefits:
- Restores original engine compression and performance.
- Ensures
perfect fitment with no modifications required.
- Reduces oil consumption and improves fuel efficiency.
- Crafted
from heat-treated aluminium alloy for strength and lightness.
- Ideal for rebuilds and long-term engine maintenance.
- Delivers smooth, quiet operation and precise tolerances for reliability.
Whether rebuilding a classic 911 or refreshing a modern Cayman, these pistons deliver precision-engineered performance with manufacturer-level accuracy.
Highlights:
- High-quality
OE Match replacement pistons for Porsche engines.
- Precision-machined for perfect tolerances and fitment.
- Manufactured from high-strength aluminium alloy.
- Restores engine compression, efficiency, and smooth performance.
- Compatible with both classic air-cooled and modern water-cooled models.
- Ideal for professional rebuilds, tuning, and restorations.
