Procomp PCE306.1029
File-fit ring set for 8 pistons and a 102.62 mm bore. 1.59 / 1.59 / 3.18 mm package with plasma-moly top rings.
Procomp / Speedmaster PCE306.1029 is a file-fit piston ring set for eight 4.040 in cylinders. The ductile-iron top ring has a plasma-moly face, the second ring is cast iron and the oil-ring assembly uses standard tension.
Application / fitment
The set is for pistons using 1/16 in, 1/16 in and 1/8 in ring grooves and cylinders finished to 4.040 in. It is a conventional file-fit design, not a gapless ring set.
- part type: piston ring set
- cylinder count: 8
- cylinder bore: 4.040 in / 102.62 mm
- piston grooves: 1/16 in × 1/16 in × 1/8 in
- V8 applications requiring this exact bore and ring package
- file-fit version: final end gaps must be set individually in the cylinders
Square each ring in its cylinder and measure end gap at the specified depth. Remove material gradually to the value required by the piston manufacturer and engine application. Install every ring with the correct side facing upward and position the gaps according to the instructions.
Technical information
- part type: file-fit piston rings
- cylinder sets: 8
- nominal bore: 4.040 in / 102.62 mm
- top ring: 1/16 in / 1.59 mm
- second ring: 1/16 in / 1.59 mm
- oil ring: 1/8 in / 3.18 mm
- top-ring material: ductile iron
- top-ring face: plasma-moly
- second-ring material: cast iron
- oil ring: stainless steel, standard tension
- gapless design: no
- UPC: 840136537908
- sale unit: 1 set for 8 pistons