Compression Specifications

WARNING: This page is about a different car, the 1990 Jaguar XJ-S, 1989 Jaguar XJ-S, 1988 Jaguar XJ-SC, and 1988 Jaguar XJ-S. However, it is still accessible from the selected car via links, so may be relevant.

XJS COMPRESSION SPECIFICATIONS

Application	Specification
Compression Ratio	12.5:1
Compression Pressure	200-220 psi (14.1-15.5 kg/cm² )
Maximum Variation Between Cylinders	10 psi (.70 kg/cm² )