Piston/Connecting Rod Assembly - Moveable
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A rotating assembly of a piston and connecting rod, joined using a wrist pin and two circlips. Based off a Subaru EJ20.
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- Creative Commons — Attribution — Noncommercial
Hi there, here is my design of a piston/connecting rod assembly based on a Subaru EJ20 STI motor. These parts were designed through the Onshape CAD software.
Printing Instructions:
- 0.12/0.2mm layer height depending on your desired detail.
- Supports only needed for the wrist pin holes on the lower piston part.
- Feel free to scale the parts as small as you want, although at 100% size it is roughly the same dimensions as an actual piston assembly.
- Print orientation should be as shown in the photos.
I would recommend printing the piston and connecting rod split as shown in the photos for the best possible details on both sides. I used superglue/CA glue to join the two parts together afterwards.
Assembly is as follows:
After joining the cut pieces with glue, place one circlip into one side of the piston itself. Then roughly align the holes of the piston/connecting rod and insert the wrist pin between them from the open side. Finally, insert the remaining circlip into the other side.