Cylinder Bore Inspection Quiz

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

• Caliper and Ruler

• Dial Bore Gauge and Outside Micrometer

• Protractor and Compass

• Thermometer and Stopwatch

Why does the text suggest DIY car enthusiasts should own measuring tools for cylinder bores?

• To have actual insight into engine condition

• To start a machine shop business

• To save money on machine shop services

• To avoid rebuilding engines

What is the purpose of honing marks on cylinder bores?

• To increase wear

• To prevent rust

• To avoid measurements

• To distribute loads

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

• 81.20 millimeters

• 81.30 millimeters

• 81.35 millimeters

• 81.23 millimeters

Where should the piston be measured for determining piston-to-wall clearance?

• At the bottom of the skirt

• At the top of the skirt

• 42 millimeters from the skirt bottom

• At the oil ring group

What is the formula for determining the new bore size for a piston with a diameter of 81.38 millimeters?

• 81.50 millimeters

• 81.45 millimeters

• 81.40 millimeters

• 81.42 millimeters

What is the purpose of using the small knob on the micrometer during measurements?

• To prevent over tightening

• To avoid measurements

• To increase wear

• To distort the shape

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

• Two spots

• Six spots

• Four spots

• Eight spots

What does an out of round condition in cylinder bores indicate?

• Increased wear

• Tapered condition

• Difference between trust and non-trust axis

• Presence of honing marks

What is the purpose of reboring cylinder bores?

• To prevent rust

• To increase wear

• To maintain proper piston to bore clearance

• To avoid measurements