Piston set, big bore 86mm. Porsche 356C / 912  ❭  0081186SP

Graphite Coated Hypereutectic Piston Kit 

Restore compression and engine performance with this OE Match 1600cc Hypereutectic Piston Kit, featuring graphite coated pistons with a 30° angle, valve pockets and 22mm wrist pins.

Fits:

• Porsche 911 1965-1968 912 SWB (F)
• Porsche 356C 1963-65

with the 3 piece engine case

Designed for a 74mm stroke, the hypereutectic construction provides excellent strength, dimensional stability and wear resistance. Graphite coated skirts help reduce friction between the piston and cylinder wall, while the valve pockets provide the required clearance for compatible engine configurations.

Each piston features a 17cc dome and is designed for a 9.2:1 compression ratio. Supplied as a complete four-piston set with rings, wrist pins and clips, it is ideal for engine rebuilds and replacing worn piston assemblies.

Why Choose Hypereutectic Pistons?

Hypereutectic pistons use a high-silicon aluminium alloy that offers excellent dimensional stability and controlled thermal expansion.

Benefits include:

• Excellent strength and wear resistance
• Reduced thermal expansion
• Graphite coating to reduce friction
• Consistent piston-to-cylinder clearances
• Excellent durability for engine rebuilds

When Should Pistons Be Replaced?

Pistons and rings can wear through high mileage, overheating, poor lubrication or excessive cylinder wear. Replacement may be required if the engine suffers from:

• Low compression
• Increased oil consumption
• Worn or damaged pistons
• Excessive piston or ring wear
• Engine damage from overheating or detonation
• A complete engine rebuild

Key Specifications

• Engine capacity: 1600cc
• Stroke: 74mm
• Hypereutectic construction
• Graphite coated
• Dome volume: 17cc
• Compression ratio: 9.2:1
• Piston angle: 30°
• 22mm wrist pins
• Machined valve pockets

Kit Includes

• 4 pistons
• Complete set of piston rings
• 4 x 22mm wrist pins
• Wrist pin clips

1600cc Engine Rebuild Pistons & Components

Correct piston specification is essential when rebuilding a 1600cc engine. Stroke, compression ratio, piston angle and wrist pin dimensions must match the intended engine configuration to maintain correct compression and reliable operation.
 
Fits:

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 356C 1963-65  

This OE Match kit combines graphite coated hypereutectic construction with a 74mm stroke specification, 30° piston angle, 17cc dome, 9.2:1 compression ratio and 22mm wrist pins, providing a complete solution for compatible engine rebuilds.

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0081186SP

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