Piston Compression Ratio / Weight

Piston Data
Compression Ratio 9.7 : 1
Weight 720 ± 4 grams (25.397 ± 0.141 oz.)

Piston Weight Tolerances
Pistons and piston pins are paired in accordance with weight selection. Pistons are weighed with parts (piston pins, piston rings, snap rings).

Piston pins must always remain assigned to the corresponding piston and must not be interchanged even within one engine set. Observe allocation during disassembly and assembly of engine mark if necessary.

If piston pins have been interchanged by mistake, reallocation must be carried out by checking the total weight.