Mazworx SR20VE Head Stage 3.5 Roller Rocker – Drag

This professionally built cylinder head is specifically designed for the Nissan SR20VE engine, tailored for drag racing turbo applications. It offers a comprehensive upgrade that enhances performance, reliability, and durability in high-stress racing conditions.

Key Features

• Optimized for drag racing turbo setups with water cooling exclusively through the head for efficient temperature management.
• Equipped with high-quality roller rockers to reduce valvetrain friction and improve responsiveness.
• Stage 3 CNC porting for enhanced airflow and combustion efficiency.
• Precision-machined 90mm CNC combustion chambers.
• Upgraded valve train components including Supertech valves (+1mm intake, +2mm exhaust), valve stem seals, titanium retainers, and dual valve springs rated at 138 lbs to handle aggressive cam profiles.
• Comprehensive valve job featuring multi-angle valve seats and reamed valve guides for optimal sealing and durability.
• Includes Mazworx threaded and O-ringed freeze plug kit designed specifically for SR20VE heads to enhance reliability under pressure.
• Labor-intensive refurbishment and assembly process ensuring quality: disassembly, cleaning, oil port plug replacement, freeze plug replacement with threaded versions, deck water port plugging option, head stud machining, resurfacing, and valve lash setting.
• Compatible with Kelford racing camshafts specified for the SR20VE.

Included Components

• Supertech valves and valve stem seals
• Supertech titanium valve retainers
• Supertech dual valve springs (138 lbs)
• Supertech bronze valve guides
• Mazworx threaded and O-ringed freeze plug kit
• Kelford racing camshafts for SR20VE
• MT roller rockers

Note: A core head is required for the build.