Piston: Testing and Inspection

Piston projection at TDC, checking
Special tools





^ VW 382/7 measuring bridge





^ VW 385/17 magnetic plate
^ Dial indicator

Checking





Piston projection at TDC must be measured when installing new pistons or a short block. Depending on piston projection, install the corresponding cylinder head gasket using the following table:





Note: To measure the piston position at TDC, turn crankshaft clockwise.

Cylinder head gasket, identification

^ Part No. = arrow 1
^ Production control code = arrow 2 (disregard)
^ Holes = arrow 3

Note: If the measurements of piston projections are different, use the largest measurement to select the proper gasket.






Piston and cylinder dimensions