Operation CHARM: Car repair manuals for everyone.

Piston Ring, Engine

PISTONS

O.D. 91.1 mm (3.587 in.)

Clearance 0.02 - 0.04 mm (.0008 - .0016 in.)

Ring groove width
No. 1 1.51 - 1.53 mm (.0594.0602 in.)

No.2 1.51-1.53 mm (.0594-0602 in.)

Oil 4.010-4.035 mm (.1579-.1589 in.)

Service sizes
0.25 mm (.010 in.) Oversize
0.50 mm (.020 in.) Oversize
0.75 mm (.30 in.) Oversize
1.00 mm (.039 in.) Oversize

PISTON RINGS

Side clearance
No. 1 0.03-0.09 mm (.0012-.0035 in.)
Limit 0.1 mm (.004 in.)

No. 2 0.02-0.06 mm (.0008-.0024 in.)
Limit 0.1 mm (.004 in.)

End gap
No. 1 0.30-0.45 mm (.0118-.0177 in.)
Limit 0.8 mm (031 in.)

No. 2 0.25-0.40 mm (.0098-.0157 in.)
Limit 0.8 mm (031 in.)

Oil ring side rail 0.20 - 0.70 mm (.0079 - .0276 in.)
Limit 1.0 mm (.039 in.)

Service sizes
0.25 mm (.010 in.) Oversize
0.50 mm (.020 in.) Oversize
0.75 mm (.030 in.) Oversize
1.00 mm (.039 in.) Oversize