Print a Working Subaru Engine

Harrell is a Santa Cruz, CA-based mechanical engineer who has been wowing online viewers with his miniature automotive creations for several years. The new 35% scale model is fully functional, although it obviously can’t be used to power a car (not even a printed one).

If you want to print your own copy of the Subaru engine, Harrell helpfully uploaded his files to Thingiverse.

Harrell previously printed a 35% scale model of the Toyota 22RE 4-cylinder engine using a homemade RepRap Prusa 3D printer. He has also printed a number of other Toyota parts and the transmission for the mid-1980s Toyota truck line. The Toyota engine consists of 80 printed parts (along with a number of screws and other items that weren't printed), and took him 60 hours to design and more than 72 hours to print.

On the Subaru engine, Harrell notes:

This engine is slightly harder to print and assemble than my Toyota 22RE engine. So it is best to print or familiarize yourself with my previous models if you choose to print this one. The scale 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 might take some tweaking to get it right so that there is not interference while rotating.

You can see the engine in action in the video below.

Source: YouTube