Ford Mustang (1999-2004) Service Manual: Piston - Ring End Gap
CAUTION: Use care when fitting piston rings to avoid possible damage to the piston ring or the cylinder bore.
CAUTION: Piston rings should not be transferred from one piston to another.
NOTE: Cylinder bore must be within specification for taper and out-of-round.
1. Use a piston without rings to push a piston ring in a cylinder to the bottom of ring travel.

2. Use a feeler gauge to measure the top piston ring end gap and the second piston ring end gap.
- Refer to the appropriate section in Group for the procedure.

Piston - Selection
NOTE: The cylinder bore must be within the specifications for
taper and out-of-round before fitting a
piston.
1. Select a piston size based on the cylinder bore.
2. NOTE: For precision fit, new ...
Piston - Ring-to-Groove Clearance
1. Inspect the piston for ring land damage or accelerated wear.
2. Measure the piston ring-to-groove clearance.
Refer to the appropriate section in Group for the procedure.
If out of specifica ...
Other materials:
Rear Ride Height Measurement - GT and Base
Item
Description
1
Body reinforcement
2
Ride height (shortest distance)
3
Rear axle
Wheel Track
Item
Part Number
Description
1
-
Front track
2
-
Rear track
Dogtracking
Item
Part N ...
Underbody Misalignment Check
Underbody Dimensions
1. Underbody dimensions tolerances are +- 3.175 mm (0.125 in). Reference
dimensions are not
controlled dimensions. Reference points are +- 4.76 mm (0.1875 in). All underbody
dimensions
are detailed to the centerline of existin ...
Component Tests
Driveline Vibration
An analysis of driveline vibration can also be conducted using the Vibration
Analyzer; follow the
manufacturer's directions.
Driveline vibration exhibits a higher frequency and lower amplitude than does
high-speed shake.
Driveline vibra ...
