Aluminum Cylinder Spacer Plate for Ø 77 mm Cylinders – Fiat 500 F/L

Precision and reinforcement for high-performance tuning: the Fiat 500 spacer plate

The aluminum piastra sottocanna Fiat 500 is a technical component of fundamental importance for anyone preparing to tune the twin-cylinder engine of the F and L versions. This specific variant is dimensioned to house oversized cylinder kits with Ø 77 mm pistons, a measurement typical of high-performance builds aimed at significantly increasing the original displacement. Thanks to a 10 mm thickness, the plate allows for correct management of the engine's geometric dimensions, while ensuring a solid and perfectly flat mounting base for the cylinders.

Technical functionality and crankcase protection

The use of this plate fulfills essential mechanical tasks for the longevity of the tuned engine:

• Compression Ratio Correction: The 10 mm height allows for compensation when using long connecting rods or increased stroke crankshafts, avoiding mechanical interference and allowing for precise adjustment of the combustion chamber volume.

• Load Distribution: Positioned between the crankcase and the cylinder liners, the plate reinforces the stud area of the engine block. This is vital to prevent cracks or deformations caused by the increased thermal and mechanical stress typical of a high-power engine.

• Thermal Dissipation: The choice of aluminum is intentional; this material ensures rapid and efficient heat evacuation from the thermal group towards the crankcase, maintaining stable operating temperatures even under prolonged stress.

Detailed Technical Specifications:

• Cylinder Compatibility: Optimized for Ø 77 mm cylinder kits.

• Housing Hole Diameter: Ø 83 mm, for a precise and smooth fit.

• Height (Spacer): 10 mm.

• Material: High mechanical resistance aluminum.

• Vehicle Application: Fiat 500 F and Fiat 500 L.

The first step for professional tuning

If your goal is to build a Fiat 500 engine that combines power and reliability, installing this piastra sottocanna Fiat 500 is a necessary choice. The precision of the 83 mm holes ensures that assembly occurs without structural tension, offering a rigid base that preserves the integrity of the original cast iron block. It is the detail that distinguishes an amateur preparation from a mechanical restoration of excellence, capable of supporting the performance required by a true enthusiast of the vintage racing world.