Mazworx Stage 1.1 Short Block (SR20 RWD)

The Mazworx Stage 1.1 Short Block for Nissan SR20 (Rear Wheel Drive) is engineered to support up to 400 horsepower, providing a robust foundation for your engine build. Designed specifically for SR20 engines used in S13, S14, and S15 chassis, this short block delivers reliability and performance enhancements critical for racing and high-performance applications.

High-Quality Components

• CP forged pistons measuring 86.5mm with 9.0:1 compression ratio for durability and strength.
• Manley H beam connecting rods built to withstand demanding power levels.
• ACL race bearings with 5-hole mains to ensure optimal oil flow and bearing life.
• New OEM S14 oil pump to maintain effective lubrication.
• Mazworx main studs and front oil squirter engineered for enhanced engine stability and oil delivery.
• Miscellaneous plugs included to complete block sealing.

Comprehensive Assembly and Machining

• Block undergoes hot tank cleaning and sandblasting for a pristine foundation.
• Oil port plugs are removed, retapped, and replaced to ensure proper sealing and flow.
• Threaded freeze plugs and oil grooves are machined for reliability and lubrication.
• Cylinders resized and honed using torque plates for accuracy and longevity.
• Deck is resurfaced to provide a flat surface for head mounting.
• Line bore is precisely honed and crankshaft cleaned, checked, polished, and balanced.
• Complete short block assembly carried out by experienced technicians.

Customer Responsibilities and Options

• Customers must supply a core block including mains, girdle, and oil squirters in good condition.
• A core crankshaft is also required from the customer.
• Optional setup for VE cylinder head is available, involving VE-specific pistons, oil pump, and block oil drain modifications.

The Mazworx Stage 1.1 short block is a reliable choice for those seeking to maximize the performance potential of their Nissan SR20 engine while ensuring foundational strength and precision workmanship.