Overhauling an R5 Turbo & R5 Alpine engine: the updated workshop guide

Are you preparing the rebuild of a Cléon 1397 (R5 Alpine / R5 Alpine Turbo / R5 Turbo) ?
Mespiecesauto has put together a complete guide for the renovation, restoration or building of your engine.

What the guide covers

• Engine identification : 840-725 / 840-726 / 840-730.
• Assessment at disassembly : technical checks to carry out.
• Reassembly objective : restoration, rebuild or building.
• Precision Metrology : crucial steps (flatness, crankshaft/conrod clearances, ovality, ring gap, oil pump…).
• Choosing parts & pitfalls to avoid :
  • Camshaft : profile, material (steel or cast iron).
  • Valvetrain : distributor drive gear, rocker pushrods, tappets.
  • Valves : replace them or not, what risks?
  • Bottom end : liner material, type of conrod bearings.
  • Specific oil pump R5 Alpine Turbo / R5 Turbo : points de vigilance.
  • Cylinder head gasket : original, reinforced, MLS or separate fire ring.

? Read the complete guide: R5 Turbo / R5 Alpine engine rebuild