In a small engine, what is used to measure the connecting rod bearing clearance?

To measure the connecting rod bearing clearance in a small engine, a gage is the appropriate tool. This measurement is crucial for ensuring that the connecting rod has the right clearance to allow for proper lubrication and function without excessive wear or mechanical failure.

Gages are specifically designed to provide accurate measurements of small tolerances, such as bearing clearances. They can effectively measure the gap between the crankshaft and the connecting rod bearing, which is essential for ensuring that the engine operates smoothly and efficiently.

Other tools mentioned, such as calipers and micrometers, may also be used for measuring dimensions but may not provide the specific type of measurement required for bearing clearance. A torque wrench, on the other hand, is used for applying a specific torque to bolts and is not relevant for measuring bearing clearance.