Operation CHARM: Car repair manuals for everyone.
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

Piston Rings
Piston Ring End Gap - First Compression Ring - Production 0.25-0.40 mm 0.010-0.016 in
Piston Ring End Gap - Second Compression Ring - Production 0.38-0.58 mm 0.015-0.023 in
Piston Ring End Gap - Oil Control Ring - Production 0.25-0.76 mm 0.010-0.029 in
Piston Ring End Gap - First Compression Ring - Service 0.25-0.50 mm 0.010-0.020 in
Piston Ring End Gap - Second Compression Ring - Service 0.38-0.80 mm 0.015-0.031 in
Piston Ring End Gap - Oil Control Ring - Service 0.005-0.090 mm 0.0002-0.0035 in
Piston Ring to Groove Clearance - First Compression Ring - Production 0.030-0.070 mm 0.0012-0.0027 in
Piston Ring to Groove Clearance - Second Compression Ring - Production 0.076-0.280 mm 0.0030-0.0110 in
Piston Ring to Groove Clearance - Oil Control Ring - Production 0.046-0.196 mm 0.0018-0.0077 in
Piston Ring to Groove Clearance - First Compression Ring - Service 0.030-0.085 mm 0.0012-0.0033 in
Piston Ring to Groove Clearance - Second Compression Ring - Service 0.030-0.085 mm 0.0012-0.0033 in
Piston Ring to Groove Clearance - Oil Control Ring - Service 0.076-0.200 mm 0.0030-0.0079 in