Maserati 4200cc F136 UC - F136 UD

Engine Overhaul

Dimensional Checks

DIMENSIONAL CHECKS

Table: axial/radial play for engine components

Coupling Description

Radial

Axial

Int. exh. valve seat /Engine head Int. exh. valve guide /Engine head

-0.08/-0.12

-0.032/-0.068 0.025/0.057

Tappet / head

Crankshaft/crankcase (Std washer) Crankshaft/crankcase (at 20 ° c)

0.12/0.24

0.019/0.047 0.029/0.054 0.030/0.059 0.035/0.064 0.005/0.016

Triple gear / support pin Int. valve / valve guide Exh. valve / valve guide

0.05/0.2

Piston/Gudgeon pin

0.16/0.69

Connecting rod/Gudgeon pin Cylinder liner/crankcase projection Crankshaft/Connecting rod (at 20 ° c) Tensioner blade secondary branch Gap electrode spark plug dis.194503 Gap timing sensor dis. 177673 Gap angular vel. sens. dis.164937 Piston/Cylinder liner

0.0145/0.0295

0.01/0.05 mm

0.033/0.061

0.2/0.339 0.15/0.45

0.1/0.25

0.044/0.076

0.6/0.7 ≤ 1.5

0.85/1.40 1.35/2.65

Oil pump control bar

VALUES EXPRESSED IN mm. All tolerances relating to couplings between the various engine components are subject to variations and/or updates resulting from technological improvements made to the components. During the various phases of engine overhaul, always check with Maserati that the tables relating to particular coupling tolerances are valid for the engine being overhauled.

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