939005097 - INTRODUCTION - PISTONS AND CONNECTING RODS

Specifications

The pistons are produced through aluminium alloy fusion, whilst the connecting rods are made from steel.The gudgeon pin is the floating type and works inside the bush inserted in the small end and is kept in place by two circlips.The pistons have impressions for the valves and the combustion chamber in the crown; they are cooled at the bottom by an oil jet.The compression seal is ensured by two bands, whilst there is a third band with three seals for the oil seal, one upper seal and one lower seal with an oil scraper ring in between.

1. connecting rod and cap2. bolts fixing connecting rod cap3. small end bush4. upper connecting rod half-bearing5. lower connecting rod half-bearing6. piston7. gudgeon pin8. circlip9. upper band (compression)10. lower band (compression)11. oil seals12. oil scraper ring