Subaru WRX EJ20 Boxer Engine Model - Fully Functioning

thingiverse

Here is a cutaway version of the EJ20 which can be found here: https://www.thingiverse.com/thing:2451310 Complete hardware kits are now available for purchase through MakerRX - my partner in this project - on their page at https://www.makerrx.com/products/mrx2 These kits include all non-printed parts, a 500 rpm DC motor, speed controller, power connectors and DC power supply. The Subaru EJ20 Boxer engine is fully functional as in all parts move as intended in the real thing. Do not confuse it with a real engine - this is not one. This engine is slightly more difficult to print and assemble than my Toyota 22RE engine. Therefore, if you choose to print this one, I suggest that you print or familiarize yourself with my previous models first. The scale of this model is once again 35% of the original, which seems to be a good size for printing and finding fasteners that work and look right. The tolerances are a little tighter, and depending on your printer, the crankshaft may need some tweaking to get it right so there is no interference while rotating. This model has a smaller engine block than the Toyota 22RE which will allow smaller printers to print it. Watch my video at https://youtu.be/6ibIXaNXtqQ for more information. Print Settings Printer Brand: RepRap Printer: Prusa i3 Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: .2mm Infill: 20-40% Notes: Everything was printed on a $200 Chinese Prusa i3 kit. So any printer should be able to print this if it has a big enough build envelope. You will need to make the decision whether or not you want to use support or a raft. Some parts require support, while others may depend on your machine. I did not need supports when printing the engine blocks, but that may vary from machine to machine. How I Designed This Everything was done in SolidWorks using only hand measuring tools. All parts were turned into STL files, scaled and repaired using NetFab basic.