Adjustable Ring Compressor 5.3 5.7 6.0 6.2 LS K24 K20 H22 B18 D16 3D model thumbnail

Adjustable Ring Compressor 5.3 5.7 6.0 6.2 LS K24 K20 H22 B18 D16

by Hydrocarbon · via Thingiverse
FormatSTL
CategoryMechanical
LicenseCC BY-SA
Triangles6.7k
UploadedApr 2, 2026
⬇ 59 downloads ❤ 4 likes 👁 152 views

Description

This is a heavy remix of DAY1_2557907's adjustable ring compressor, sized to cover GM 5.3-5.7L LS, 6.0-6.2L LS, and Honda K24, K20, H22, B20, B18-B16, and D16. I added a lip at the base and taper to allow a hose clamp to keep the bore size. His was also slightly oval (see 3.9 bore alternate), and I needed to add cuts in my solid lip via hacksaw to allow more flex. I put large gaps in the lip it to keep it more circular when tightened. I also thinned the walls and added more taper for it to work better. Each compressor is sized 0.020" or 0.50mm oversized vs standard bore. It works just as well as my commercial metal taper tools. I have printed and used the '3.9 bore alternate' file with PLA using 2 walls and 20% infill. You might find the others' walls are a bit thin on the overlap especially on the smaller bores. Usage: place piston skirt base level to compressor's base, clamp until there's no clearance (but still slides). Pistons are tapered, so the skirt base is the diameter of your bore. Next slide the piston until 1" of skirt is sticking out the bottom, place into bore, then align the piston crown within the tool. Clock the whole assembly to align your rod! While pushing down on the compressor, use fingers or a dead blow hammer to push into the bore with 1 clean motion. Tips: You'll find it goes in smoother if you keep the gap of the crown even within the tool. Make sure to oil your piston & sleeves first and use axle grease on the compressor's base to help keep it stuck to the engine block. Use a rounded file and sandpaper to smooth the interior (wash with soap if sanding). Run a loaded piston through it multiple times to cut off any high spots. I only had 2 tiny bits come off after filing & sanding.
Automotive engine tools

Originally published on Thingiverse