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Home >> BMW >> 2009 >> 650i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1309 (Engine - Technical Data) >> 25 Piston With Rings And Pins >> 11 25 Pistons With Rings And Pins N62 B44

11 25 Pistons With Rings And Pins N62 B44

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.
TECHNICAL DATA - PISTONS WITH RINGS AND PINS N62 B44

Piston and pin are paired to each other - replace together only.    
Measuring point "A" (position) mm 18
Original, stage 0 (new dimension) mm 91.986 ± 0.016
Oversize, stage 1 (new dimension) mm 92.236 ± 0.016
Oversize, stage 2 (new dimension) mm 92.486 ± 0.016
Piston installation clearance (piston new) mm 0.001...0.044
Piston installation clearance (piston worn) mm 0.026...0.073
Permissible total wear tolerance between piston and cylinder (engine operated) mm 0.10