E motor (42-40) on Y axis (ender3v2, maybe pro?) STL+STEP (Patreon)

Might work on other printers, not sure of their setup

The Stock extruder motor (42-40) has a bit more torque than the Y stock (42-32) so if you ever experienced Y skips this will help, otherwise not really a needed upgrade.

The stock Y mount won't work with a larger motor as it will hit the bed frame, so needed a slimmer one.
The pulley will need to be installed the other way around, teeth closer to the motor.

On stock printer board you will need to up the voltage to 1.38 - 1.4v - on klipper with a aftermarket board set the current to about 0.8~0.9 amp

you will need a GT2 Pulley 20T - 5mm bore, as the stock is press fitted.

Print in PETG, high infill, a small print support on the edge will help a lot for a cleaner inside.

This is a tweaked version of my original model, can probably still be improved for a better print, but in practice it works well.

Note: not needed if doing my single Y linear rail upgrade, as it raises the build plate enough to clear the motor