Pajero Dummy Cylinder Head
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A dummy cylinder head to perform leak down test on the rings of a cylinder with the head off.
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Universal Dummy Cylinder Head for Leak Down Testing (Tested on 6G72)
This is a 3D-printed dummy cylinder head designed to perform leak down tests on engine blocks with the cylinder head removed. It is a universal design intended to work with a variety of engine blocks, though it does not match factory bolt patterns.
Originally used on a Mitsubishi Pajero 6G72 engine to confirm good piston ring sealing and overall block condition. The tool allows you to pressurize the cylinder and assess for ring leakage without the head installed.
Rubber gloves were used to help seal the piston crown, and spacers were added under the head bolts for a secure fit.
Printed in PLA with 50% infill, but a higher infill or stronger material is recommended—some cracking occurred around the bolt holes under pressure.