What material are these pistons made from and why is it important?

These pistons are forged from 2618 aluminum. This material is chosen for its high tensile strength, which is crucial for handling the extreme pressures and temperatures found in high-performance and racing engines, especially those using nitrous oxide.

What is the Forged Side Relief (FSR) design and what benefit does it offer?

The FSR design is a proprietary JE Pistons feature that reduces skirt width and uses a shorter wrist pin. This combination helps to minimize friction and power loss while also saving weight, contributing to overall engine efficiency and performance.

Are these pistons compatible with all BBC 632 engine builds?

This set is specifically designed for a 4.625 inch bore and includes a 1.120 inch compression distance and a 0.990 inch wrist pin. While intended for BBC 632 applications, it's essential to confirm these specific measurements match your engine's requirements and crankshaft stroke.

JE Pistons BBC 632 NOS Piston Set 293085

Name: JE Pistons BBC 632 NOS Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-632-nos-set-of-8-pistons-t14-295916
Price: 1232.52 USD
Availability: BackOrder

JE Pistons BBC 632 NOS Set of 8 Pistons

$1232.52

On Backorder

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

JE Pistons BBC 632 NOS Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Set includes 8 forged pistons for BBC 632 engines.
Forged in the USA from 2618 aluminum for high tensile strength.
Features a 4.625 inch bore size.
Includes a 1.120 inch compression distance and a 0.990 inch wrist pin.
Proprietary Forged Side Relief (FSR) design minimizes friction and saves weight.
May include an accumulator groove to improve ring seal and reduce flutter.

This piston set is designed for BBC 632 engines with a 4.625 inch bore. Please verify compatibility with your specific engine build.

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Product Details

Forged from 2618 aluminum, these JE Pistons are built for serious performance in your BBC 632 engine. This set includes eight pistons, each designed to handle the demands of high-horsepower applications, especially those utilizing nitrous oxide (NOS). The material choice, 2618 aluminum, offers the high tensile strength necessary for engines pushed to their limits, ensuring reliability when you need it most.

JE Pistons incorporates several design features to maximize both durability and power. The proprietary Forged Side Relief (FSR) forging design reduces skirt width and uses a shorter wrist pin, which not only saves weight but also minimizes friction and power loss. Depending on the specific application, these pistons may also feature an accumulator groove to help manage combustion gas pressure, leading to better ring seal and consistent power delivery. Additionally, a skirt coating, if included for your application, further reduces friction and wear on the cylinder walls, contributing to a quieter operation and longer piston life. Every component is forged and machined in the USA, reflecting a commitment to quality and performance proven on tracks worldwide.

This kit is specifically configured for a 4.625-inch bore with a 1.120-inch compression distance and a 0.990-inch wrist pin. Please note that these pistons are not CARB approved and cannot be shipped to California. For optimal performance and longevity, always refer to the manufacturer's installation instructions and recommended assembly procedures.