Fitting Pistons
- With piston and rod assemblies removed, wipe cylinder bores clean and measure diameter of cylinder with a dial indicator. If cylinder is worn or tapered more than 0.005", cylinder must be bored for oversize pistons.
- If bore is worn or tapered less than 0.005", cylinder can be cleaned and honed, and 0.001" oversize pistons installed. See oversize piston table for oversize pistons available from manufacturer.
- To check fit of rings in cylinder bore, insert ring in cylinder bore and push ring into bore 2" with head of piston. Measure ring end gap with a feeler gauge. Before installing rings on pistons, ensure ring grooves are clean of carbon and inspect grooves for nicks or burrs. Install rings with gaps positioned as shown in illustration.
OVERSIZE PISTONS
| Application |
Size |
| All |
.030" |
Courtesy of GENERAL MOTORS COMPANY