What is the compression ratio for this Mahle piston?

This Mahle MS single cylinder piston is designed with a 7.7:1 compression ratio. This is achieved through the combination of the piston's dish volume and the cylinder head's combustion chamber.

Is this piston suitable for a stock engine rebuild?

Yes, this piston is a well-built component suitable for engine rebuilds on Porsche 930 Turbo models from 1978-1992. Its specifications, including the 7.7:1 compression ratio, are designed to work within the parameters of these engines.

What does 'Not CARB approved' mean for this piston?

This means the piston does not meet the emissions standards set by the California Air Resources Board (CARB). As a result, it cannot be legally shipped to or installed on vehicles registered in California.

Mahle MS Single Piston 98mm Bore 7.7CR PC98-001

Name: Mahle MS Single Cylinder 78-92 Por 930 T 3.3-3.4L 98mm Bore 74.4 Stk 127mm Rod 23mm Pin 14.2cc 7.7CR
Brand: Mahle
SKU: mahle-mahle-ms-single-cylinder-78-92-por-930-t-3-3-3-4l-98mm-bore-74-4-stk-127mm-t14-224511
Price: 485.56 USD
Availability: BackOrder

Mahle MS Single Cylinder 78-92 Por 930 T 3.3-3.4L 98mm Bore 74.4 Stk 127mm Rod 23mm Pin 14.2cc 7.7CR

$485.56

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle MS Single Piston for Porsche 930 T 3.3-3.4L. 98mm bore, 7.7 CR. A well-built component for engine rebuilds.

Key Features

Fits Porsche 930 T 3.3-3.4L engines from 1978-1992.
Features a 98mm bore size.
Designed with a 7.7:1 compression ratio.
Forged construction for improved strength and durability.
Includes a 74.4mm stroke, 127mm rod length, and 23mm pin diameter.
Has a 14.2cc dish volume.

This piston is designed for Porsche 930 Turbo models with 3.3-3.4L engines manufactured between 1978 and 1992. Always confirm 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

If you're rebuilding the engine in your Porsche 930 Turbo from 1978-1992, a solid set of pistons is crucial. This Mahle MS single cylinder piston is built to precise specifications for the 3.3-3.4L engine, featuring a 98mm bore and a 7.7:1 compression ratio. Mahle is a well-known name in engine components, and this piston reflects their commitment to reliable performance for your air-cooled Porsche.

This piston is forged, meaning it's made from a solid block of aluminum that's heated and hammered into shape. This process creates a stronger, more durable part than cast pistons, which is important for the high-performance demands of a turbocharged engine. It has a 74.4mm stroke, a 127mm rod length, and a 23mm pin diameter, all designed to work together for optimal engine function. The 14.2cc dish volume contributes to the 7.7:1 compression ratio, making it a good choice for maintaining a balance between power and drivability, especially when paired with forced induction.

Keep in mind that this piston is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.