Cylinder bore spacing

In Simple Terms

The distance between the centers of the cylinders in an F1 engine must be exactly 101 millimeters, with a tiny tolerance of plus or minus 2mm. This tight specification ensures all teams are working with similar engine dimensions and maintains competitive fairness.

• Cylinder bore spacing must be 101.0mm with a tolerance of ±2mm (99.0mm to 103.0mm)
• This measurement controls the physical distance between cylinder centers in the engine block
• The strict tolerance prevents unfair advantages through engine design and maintains technical equality
• Compliance is checked during engine homologation and technical inspections