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Home >> BMW >> 2011 >> Z4 35is >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine - Technical Data (N52)) >> Pistons With Rings And Pins N52K/B30 >> 11 25 Pistons with Rings and Pins N52K B30

11 25 Pistons with Rings and Pins N52K B30

WARNING: This page is about a different variant/trim than selected.
PISTONS WITH RINGS AND PINS SPECIFICATION

1st groove    
End clearance mm 0.150... 0.300
Axial play mm 0.020... 0.070
2nd groove    
End clearance mm 0.300... 0.500
Axial play mm 0.020... 0.060
3rd groove    
End clearance mm cannot be measured
Axial play mm cannot be measured


PISTONS WITH RINGS AND PINS SPECIFICATION

Piston and pin are paired to each other - replace together only.    
Measuring point "A" (position) mm 14
Piston diameter at measuring point "A"    
Original (new dimension) mm 84.990±0.010
Repair stage (new dimension) mm %
Oversize (new dimension) mm 85.240±0.010
Piston installation clearance (piston new) mm 0.000...0.034
Piston installation clearance (piston worn) mm 0.020...0.047
Permissible total wear tolerance between piston and cylinder
(engine operated)
mm 0.150