Ford Mustang Quiz
Engine

Piston - Pin to Bore Diameter

In this manual: Engine
Service Information — 34Suspension — 63Driveline — 80Brake System — 74Steering System — 42Engine — 329Automatic Transmission — 84Manual Transmission, Clutch and Transfer Case — 64Exhaust System — 8Fuel System — 39Climate Control System — 76Instrumentation and Warning Systems — 25Battery and Charging System — 19Audio Systems — 14Lighting — 24Electrical Distribution — 8Electronic Feature Group — 11Body — 173Frame and Mounting — 6General Information — 1
~1min read

1. WARNING: Cover the end of the pin bore with a hand or shop rag when removing the retainer ring, since it has a tendency to spring out. Wear eye protection.

NOTE: Piston and piston pins are a matched set and should not be interchanged.

Measure the piston pin bore diameter in two directions on each side. Verify the diameter is within specification.

  • If out of specification, install new components as necessary.
Piston - Pin to Bore Diameter
Piston - Pin to Bore Diameter

Piston -Diameter

1. Measure the piston diameter 90 degrees from the piston pin at the point indicated.

  • If out of specification, install new components as necessary.
Piston -Diameter

Piston -to Cylinder Bore Clearance

1. Subtract the piston diameter from the cylinder bore diameter to find the piston-to-cylinder bore clearance.

Test yourself

A quick Ford Mustang quiz: every answer comes with an explanation and a link to the manual page.