Product Description

Sneed 2007-2010 N14 Remanufactured Cylinder Head (R55/R56)

The Sneed 2007-2010 N14 Remanufactured Cylinder Head is a precision-engineered replacement top-end assembly designed for R55–R56 MINI Cooper S and JCW models equipped with the turbocharged N14 engine. Remanufactured on the same machines used for SneedSpeed race engines, this cylinder head delivers both reliability and enhanced performance potential over a worn or standard OEM head.

Purpose and Application

This remanufactured cylinder head is ideal for:

Replacing worn, warped, or damaged N14 cylinder heads
Building a fresh long block or engine refresh project
Supporting increased airflow and boost levels with upgraded valve components
Minimizing downtime with a ready-to-install top end

It is engineered as a direct OEM replacement that requires no modifications for proper installation on compatible engines.

Key Features

Precision Remanufacturing Process
Each head is thoroughly cleaned, pressure tested, and machined with strict tolerances. The head deck surface is trued to .001" flatness to ensure consistent sealing and performance. Valve guides are replaced and a three-angle valve job is performed for improved combustion efficiency. New valves and valve seals are installed to return the head to better-than-stock condition.

Direct OEM Fitment
Engineered to meet or exceed OEM specifications, this remanufactured N14 cylinder head installs directly onto the N14 engine in R55–R56 Cooper S and JCW models without the need for special adapters or machining.

All-Inclusive Assembly
The cylinder head is supplied complete with installed cams, rockers, lifters, and all internal valve train components. This eliminates the hassle of sourcing individual parts and makes the head ready for installation out of the box.

Enhanced Durability and Service Life
High-quality replacement seals and remanufacturing techniques result in a head that offers greater durability than a worn OEM piece. Each head is rebuilt to withstand normal and increased performance loads expected in street, tuned, and enthusiast driving conditions.

Available Performance Levels

This remanufactured cylinder head is offered in multiple performance levels:

Street Series

Designed for stock engines and lightly modified builds
Includes components optimized for everyday reliability and drivability

Sport Series (Performance Option)

Includes performance camshafts and beehive valve springs for increased airflow and more power
When combined with ECU tuning and supporting mods, produces a noticeable gain over Street Series output without requiring major engine changes

Sport Series cam specs (example): intake ~257°/250°, 10.00 mm lift; exhaust ~216°/209°, 9.50 mm lift — designed for stronger mid-to-high RPM performance.

Benefits

Better-than-OEM component quality through advanced remanufacturing
Improved sealing and durability from precision machining and new valve components
Direct fitment saves labor and reduces installation uncertainty
Performance potential with Sport Series components
Eliminates common N14 head issues such as warping, sealing failures, and poor valve seal condition