Piston Ring Squaring Tool LS 5.3 5.7 6.0 6.2 and Honda K24 K20 H22 B20 B18 B16 D16 3D model thumbnail

Piston Ring Squaring Tool LS 5.3 5.7 6.0 6.2 and Honda K24 K20 H22 B20 B18 B16 D16

by Hydrocarbon · via Thingiverse
FormatSTL
CategoryMechanical
LicenseCC BY-SA
Triangles3.8k
UploadedApr 2, 2026
⬇ 141 downloads ❤ 2 likes 👁 123 views

Description

Simple ring squaring tool, sets the ring 1" into the bore, considered to be the ideal spot. I thinned out some sections to reduce print time. I also included a 'pretty' version as pictured and a split version that can cover multiple bore sizes. I used 20% infill with PLA. Sizes include 3.78", 3.898", 4", 4.065" for GM LS blocks and 87mm, 86mm, 85mm, 84mm, 81mm, and 76mm for Honda K24, K20, H22, B18/B16, and D16. Usage: place piston ring into bore about 1/4", press tool into bore until flush with the block deck. Make sure one of the fingers covers both sides of the ring gap. Remove, measure gap, grind, repeat.
Automotive engine tools

Originally published on Thingiverse