Classification of pistons
WARNING: This page is about a different car, the 2016 Porsche Macan and 2015 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.
Only one weight class (+/-) per engine permitted.
If the weight class/dimensional group cannot be determined, the components (piston with piston rings, pin and circlip) must be weighed.
| Weight class: | Weight range: | Scale: |
|---|---|---|
| - Minus | 556-561 grams | Piston with piston rings, pin and circlip |
| + Plus | 561-566 grams |
Allocation of connecting-rod bearing shells:
The connecting-rod bearing classification sequence begins at connecting-rod bearings 1+4
The combination of bearing shells red/blue and blue/red have the same tolerance class as yellow/yellow.
| Connecting-rod bearing | Permitted color combinations of bearing shells | ||
|---|---|---|---|
| top/connecting rod | Yellow | Red | Blue |
| bottom/connecting rod cap | Yellow | Blue | Red |