Range Rover Classic V8 Cylinder Block ComponentsComposite head gaskets are thicker than standard tin gaskets and will therefore lower the engine's compression ratio. Ideal for raising compression ratio when heads/block faces have been skimmed. (Not applicable to 1995 on).
Approximate gasket thicknesses are as follows:
- Standard (tin) gaskets - 0.5mm
- Composite gaskets - 1.2mm