A Systems Approach Automotive Technology PowerPoint® Presentation Prepared by René Green

Chapter 8 Short Blocks

Short Blocks Chapter Overview This chapter discusses the engine's cylinder block, crankshaft, crankshaft bearings, connecting rods, pistons and rings, oil gallery, core plugs, flywheel, and harmonic balancer, focusing attention on the design and function of these essential parts of gasoline engines.

Short Blocks Chapter Objectives List the parts that make up a short block and briefly describe their operation. Describe the major service and rebuilding procedures performed on cylinder blocks. Explain crankshaft construction, inspection, and rebuilding procedures. Explain the function of engine bearings, flywheels, and harmonic balancers.

Short Blocks Explain the common service and assembly techniques used in connecting rod and piston servicing. Explain the purpose and design of the different types of piston rings. Describe the procedure for installing pistons in their cylinder bores.

Short Blocks Cylinder Block Cylinder Block Reconditioning Lubricating and Cooling Core Plugs Cylinder Sleeves Cylinder Block Reconditioning Deck Flatness Cylinder Walls

Short Blocks Cylinder Bore Inspection Taper Out of roundness

Short Blocks Cylinder Bore Surface Finish Installing Core Plugs Cylinder deglazing Cylinder boring Cylinder honing Installing Core Plugs Disc or dished-type Cup-type Expansion-type

Short Blocks Crankshaft Vibration damper Flywheel Balance shafts

Short Blocks Crankshaft Inspection and Rebuilding Checking Crankshaft Saddle Alignment

Short Blocks Crankshaft Inspection and Rebuilding Checking Crankshaft Straightness Checking Crankshaft Clearance and End Play

Short Blocks Flywheel Inspection Crankshaft Bearings

Short Blocks Bearing Spread Bearing Crush Bearing Locating Devices Oil Grooves Oil Holes Oil Clearance Bearing Failure and Inspection

Short Blocks Installing Main Bearings and Crankshaft Plastigage Crankshaft End Play Connecting Rod Pistons and Piston Rings Pistons Head or dome Ring lands Piston pin

Short Blocks Piston Rings Compression Rings Oil Control Rings

Short Blocks Installing Pistons and Connecting Rods