SneedSpeed R52 & R53 MINI Cooper S Remanufactured Cylinder Head
Top-End Baseline · Output-Ready Architecture
The SneedSpeed R52 & R53 MINI Cooper S Remanufactured Cylinder Head is a fully remanufactured, direct-fit cylinder head engineered for first-generation MINI Cooper S and JCW models equipped with the supercharged W11 engine. This head restores combustion sealing, valve control, and surface integrity, re-establishing the correct top-end condition required for reliable operation and future output decisions.
This is not a performance head.
It is the reference condition the rest of the engine must be built against.
Function & Intent
On the W11 platform, the cylinder head defines:
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Compression stability
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Head gasket sealing reliability
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Valvetrain consistency under boost
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Thermal control at sustained load
When a head is worn, warped, or compromised, every downstream change becomes corrective instead of intentional. This remanufactured head resets the top end to known, controlled specification, allowing the engine to operate predictably at stock output and remain structurally prepared for increased demand.
Remanufacturing Standards
Each SneedSpeed cylinder head is:
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Fully cleaned and stripped
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Pressure-tested for cracks and porosity
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Machined to restore flatness and sealing surfaces
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Reconditioned for valve seating and guide integrity
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Assembled with new valve seals
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Inspected to SneedSpeed fitment and clearance standards
The result is a head that restores factory function while eliminating accumulated wear variables.
Where It Fits
This cylinder head is appropriate when:
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Replacing a warped or damaged head
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Correcting head gasket failure
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Completing a full or partial engine rebuild
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Establishing a stable baseline before increasing boost or load
It is intentionally configured to maintain factory camshaft geometry and drivability.
Applications
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R52 MINI Cooper S (W11 supercharged)
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R53 MINI Cooper S & JCW (W11 supercharged)
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Street and performance-street engines
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Rebuilds intended to support sustained boost and load
Summary
The SneedSpeed R52 & R53 MINI Cooper S Remanufactured Cylinder Head restores the W11 top end to a known, controlled state—the prerequisite for reliability today and flexibility tomorrow. It is the component that makes future output decisions deliberate instead of reactive.
