Subaru EJ Rear Main Seal Press

prusaprinters

<p>Most of the rear main seal presses I've found require you to hit the press with a hammer or mallet to tap the seal in. &nbsp;While this does work, it's easy to get the seal crooked or in a little too far. &nbsp;So, I decided to take a different approach and make one that uses the flywheel bolts to press the seal into place. &nbsp;Just tighten the 4 bolts in a cross pattern a little at a time to evenly press the seal into place. &nbsp;The lip on the press is 4mm deep and is designed to stop once the seal is flush with the edge of the crank case. &nbsp;See the photos for the end result on a 2003 WRX 2.0L engine.</p><p>I've only tested with the one 2.0L (EJ205) engine and the factory flywheel bolts. &nbsp;This should work fine on an EJ255 or EJ257 as well. &nbsp;I think this will also work on the naturally aspirated EJ253 and possible other EJ engines but I don't have one right now to check. &nbsp;All of the Subarus I work on are manuals so I'm not sure if this will work with the automatic flex plate bolts. &nbsp;It may but I haven't tested it. &nbsp;</p><p>I printed this in PLA with 31% gyroid infill. &nbsp;Didn't have any issues with it deforming when I pressed the seal in. &nbsp;You could probably go a little less without any issues.</p><p>Let me know if you find this needs any tweaks and what engines you use it on. &nbsp;</p>