Imprint Contact 868 Videos
900.000 Callings


Wheel change
Save Energy

Video Cylinder - Crank Drive
Video Piston 1
Video Piston 2
Video Piston 3
Video Piston 4
Video Piston - history
Video Piston - in general
Video Piston - material
Video Piston - stress
Video Piston - dimensions
Video Piston - measuring
Video Piston - truck
Video Piston Pin
Video Piston Pin Offset
Video Piston Rings 1
Video Piston Rings 2
Video Piston Rings 3
Video Connecting Rod
Video Crankshaft-history
Video Crankshaft 1
Video Crankshaft 2
Video Crankshaft 3
Video Crankshaft 4
Video Crankshaft 5
Video V-2 Crankshaft 6
Video Crankshaft 7
Video Bearing Play Check
Video Forces crank mechanism
Video Rot. Vibration Damper
Video Equaliser Shafts 1
Video Equaliser Shafts 2
Video 5-cyl. Block
Video Fly Wheel
Video Cylinder Block 1
Video Cylinder Block 2
Video Cylinder Block 3
Video Cylinder Block 4
Video Cylinder Block 5
Video Cylinder Block 6
Video Measurements
Video Loop Scavenging
Video Classic Racing Engine
Video V8 Cylinder Block
Video V8 Crankshaft 1
Video V8 Crankshaft 2
Video V10 Cylinder Block
Video V12 Cylinder Block
Video W12 Cylinder Block
Video W8 Cylinder Block

Video CO2-Emissions
Video Torque
Video Gas Speed
Video Hollow Cylinder
Video Bore Stroke Ratio
Video Cubic Capacity
Video Output per Liter
Video Efficiency
Video Calc. Crank Mechan.
Video Pistin Force
Video Compression Ratio
Video Pistin Speed
Video Power (output)
Video Power (piston pressure)

Video Multi-cylinder engine 1
Video Multi-cylinder engine 10

          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Cylinder Diameter Measurement


The measuring of the cylinder diameter leads to a more exact analysis of the state of wear and tear. In this case, one can decide which repair possibilities are open, or whether a repair must take place at all. Apart from the pure measuring, a visual examination is also important. The eveness of the cylinder and its sealing surface can be checked with a straight-edge ruler.


In the above picture, one can see how an inside micrometer is brought into position to correctly determine the diameter. Important requirements:
- The instrument must be held vertical, so that a higher value is not shown.
- The highest wear is to be expected a little below TDC.
- It should be measured at about 90 to the longitudinal direction.

The calibration of the micrometer is particularly important. Measuring plates of an exact length are placed into a test-plate holder, In such a way as to allow an exactly defined gap. The micrometer can then be placed into this gap to set the baseline value. The piston-play varies greatly according to temperature and the measuring direction. In a cold state, and at 90 to the pin direction, it amounts to roughly 0,04 mm. 02/11               Top of page               Index
2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

Our E-Book advertising