Subaru WRX EJ20 Boxer Engine Model - Fully Functioning - image

Files (15)

oil_pan_-_electric_motor_-_no_electronics_Scaled.stl

STL

531.3 KB

Piston_scaled.stl

STL

197.0 KB

Flywheel_scaled.stl

STL

699.5 KB

Exhuast_Valve_scaled.stl

STL

113.4 KB

Oil_pan_drive_gear_scaled.stl

STL

72.2 KB

Timing_Pulley_scaled.stl

STL

53.5 KB

Tensioner_pulley_scaled.stl

STL

58.9 KB

Intake_Manifold_scaled.stl

STL

1.4 MB

Valve_spring_puck_scaled.stl

STL

21.9 KB

Connecting_rod_bearing_cap_scaled.stl

STL

54.8 KB

Cam_Spacer_3_scaled.stl

STL

18.1 KB

Crankshaft_5_scaled.stl

STL

102.5 KB

Crankshaft_6_scaled.stl

STL

96.7 KB

Connecting_rod_scaled.stl

STL

67.9 KB

Water_Pump_scaled.stl

STL

403.1 KB

Print guidance estimate

Uses saved filament metadata

Print cost & setup estimate

Setup guidance plus saved or slicer-confirmed filament, cost, and time. Model file size is never treated as printable volume.

15 model files

Recommended kit

50g

Based on 25% main infill across listed model files

Material cost

$1.20

Filament only at roughly $24/kg PETG / ASA

Print time

2.0h saved / 1.4h–2.4h estimate

Uses 70 mm/s, 0.2 mm layers; verify supports in slicer

STL file	Role	Source size	PETG / ASA 20%	PETG / ASA 25%	100% solid	Recommendation
oil_pan_-_electric_motor_-_no_electronics_Scaled.stl	Printable file	531.3 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Piston_scaled.stl	Printable file	197.0 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Flywheel_scaled.stl	Printable file	699.5 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Exhuast_Valve_scaled.stl	Printable file	113.4 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Oil_pan_drive_gear_scaled.stl	Printable file	72.2 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Timing_Pulley_scaled.stl	Printable file	53.5 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Tensioner_pulley_scaled.stl	Printable file	58.9 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Intake_Manifold_scaled.stl	Printable file	1.4 MB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Valve_spring_puck_scaled.stl	Accessory piece	21.9 KB STL	Slice file	Slice file	Slice file	Small functional file: print slowly; consider 80–100% infill for durability.
Connecting_rod_bearing_cap_scaled.stl	Cover / cap	54.8 KB STL	Slice file	Slice file	Slice file	Use PETG / ASA; check sealing faces and verify in slicer.
Cam_Spacer_3_scaled.stl	Accessory piece	18.1 KB STL	Slice file	Slice file	Slice file	Small functional file: print slowly; consider 80–100% infill for durability.
Crankshaft_5_scaled.stl	Printable file	102.5 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Crankshaft_6_scaled.stl	Printable file	96.7 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Connecting_rod_scaled.stl	Printable file	67.9 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing
Water_Pump_scaled.stl	Printable file	403.1 KB STL	Slice file	Slice file	Slice file	Ensure proper orientation in slicer for optimal printing

Saved setup guidance is used for material, infill, support, and per-file recommendation text; editable numbers are planning estimates only.

Mechanical/Functional

Subaru WRX EJ20 Boxer Engine Model - Fully Functioning

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Shared by

Michael Chen

Verified

Description

See updated cutaway version of the EJ20 can be found here. Complete hardware kits are made for the updated cutaway model. Kits include all non printed parts, 500 rpm dc motor, speed controller, power connectors, and DC power supply. It's fully functional as in all parts move as intended in the real thing. Do not confuse it with a real engine, as this is not. 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.