What is the compression ratio with these pistons?

These Mahle pistons feature a 38.5cc dish volume. When installed with the appropriate cylinder heads and gasket, they are designed to achieve a 10.0:1 compression ratio for your engine.

Are these pistons suitable for all 911 models from 1976-1983?

This specific piston set is designed for 1976-1983 Porsche 911 applications. It is always recommended to confirm the exact bore and stroke specifications match your engine's requirements before purchase.

What is the wrist pin size for this piston set?

The wrist pin diameter for this Mahle piston set is 22mm. This ensures compatibility with the corresponding connecting rods and wrist pins used in the engine build.

Mahle 911 Piston Set 98mm Bore PP98-015

Name: Mahle MS Piston Set 76-83 Por 911 98mm Bore 70.4mm Strk 127.8mm Rod 22mm Pin 38.5cc 10.0CR Set of 6
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-76-83-por-911-98mm-bore-70-4mm-strk-127-8mm-rod-22mm-p-t14-224475
Price: 2058.33 USD
Availability: BackOrder

Mahle MS Piston Set 76-83 Por 911 98mm Bore 70.4mm Strk 127.8mm Rod 22mm Pin 38.5cc 10.0CR Set of 6

$2058.33

On Backorder

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Mahle MS Piston Set 76-83 Por 911 98mm Bore 70.4mm Strk 127.8mm Rod 22mm Pin 38.5cc 10.0CR Set of 6

Key Features

Fits 1976-1983 Porsche 911.
Mahle MS Piston Set includes six pistons.
Features a 98mm bore and 70.4mm stroke.
Designed with a 38.5cc dish volume for a 10.0:1 compression ratio.
Utilizes a 127.8mm connecting rod length and a 22mm wrist pin diameter.
Constructed from forged material for enhanced strength and durability.

This piston set is designed for 1976-1983 Porsche 911 models. Please verify compatibility with your specific vehicle's engine configuration.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This is a Mahle MS Piston Set designed for 1976-1983 Porsche 911 models. These pistons are crucial components for your engine's internal combustion process, converting the force of expanding gases into rotational motion. When rebuilding or upgrading your engine, selecting high-quality pistons like these from Mahle ensures reliable performance and durability for your air-cooled flat-six.

Mahle has engineered these pistons with a 98mm bore and a 70.4mm stroke, contributing to the engine's displacement and power output. The set includes pistons with a 38.5cc dish volume, which, combined with other engine components, results in a 10.0:1 compression ratio. This compression ratio is a key factor in determining the engine's efficiency and power potential. The pistons are designed to work with a 127.8mm connecting rod and feature a 22mm wrist pin diameter, ensuring proper fitment and robust connection within the engine assembly. The forged construction offers excellent strength and resistance to the high pressures and temperatures experienced during operation, making them a solid choice for performance applications.

This set includes six pistons, enough for a complete six-cylinder engine rebuild. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to your vehicle's specific service manual or consult with a qualified mechanic for detailed installation procedures and any additional components that may be required for your engine build.