Operation CHARM: Car repair manuals for everyone.
Home >> Volvo >> 1993 >> 940 L4-2320cc 2.3L DOHC B234F (Can) >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Block Assembly >> Piston Ring, Engine
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Piston Ring, Engine

Side Clearance
In piston groove, measured with ring on piston.		Upper Compression Ring 0.060-0.092
Lower Compression Ring 0.040-0.072
Oil Scraper Ring 0.030-0.065
End Gap
Measure ring gap 15 mm (0.6 in) from lower edge of cylinder.		Upper Compression Ring 0.30-0.55
Lower Compression Ring 0.30-0.55
Oil Scraper Ring 0.30-0.55
pro multis · About Operation CHARM