Cylinder Bore Inspection Quiz

What two measuring devices are needed to inspect and measure cylinder bores?

• Caliper and Micrometer

• Ruler and Vernier Gauge

• Dial Bore Gauge and Outside Micrometer

• Depth Gauge and Feeler Gauge

Why does the text suggest DIY car enthusiasts should own dial bore gauges and micrometers?

• To start a machine shop business

• To save money on engine rebuilds

• To measure tire pressure accurately

• To have actual insight into the engine condition

What are the two main things to look for during the visual inspection of cylinder bores?

• Deep scratches and rust

• Cross-hatch hone pattern and rust

• Rust and scoring

• Scoring and cross-hatch hone pattern

What is the purpose of zeroing the micrometer before measuring the bore?

• To distort its shape

• To prevent accurate measurements

• To increase the bore diameter

• To align the zero mark with the measurement

How many spots are recommended to measure on the cylinder bore for an accurate assessment?

• 6

• 3

• 4

• 5

What is the maximum allowable bore diameter according to the factory service manual?

• 81.25 mm

• 81.30 mm

• 81.20 mm

• 81.23 mm

Where is the piston measured for determining the piston diameter?

• Thrust side 42 mm from skirt bottom

• Oil ring group

• Top of the piston

• Skirt bottom

What is the formula provided in the text for determining the new bore size?

• Piston diameter plus piston clearance

• Piston diameter minus piston clearance

• Piston diameter plus piston clearance minus honing allowance

• Piston diameter multiplied by piston clearance

What is the purpose of increasing piston-to-wall clearance in engine modifications?

• To increase engine noise

• To maintain proper piston to cylinder clearance

• To reduce engine efficiency

• To decrease engine power

What is the recommended action for cylinder number three based on the visual inspection results?

• Reuse the cylinder with new rings

• Ignore the cylinder condition

• Re-hone the cylinder

• Rebore the cylinder