Pics/Video electric power steering conversion (EPS) in s14

[silviaks2nr]

This isn't a write up per se, but a bunch of people were interested in the EPS conversion I did on my car and I wanted to share some pictures of the process and a video at the end.

stock s14 column


stock s14 and equinox columns stripped down


s14 column and shaft


These are the important parts needed from the GM eps for the conversion.
red arrow- splined/female splined upper steering shaft will be welded to the upper part of the s14 steering shaft
yellow- section of the 3 bolt flanged tube that bolts to the motor will be welded to the upper part of the s14 steering column
green- output shaft from the electric motor and corresponding splined u joint needs to be welded onto lower s14 steering shaft before the firewall


you need to cut the female splined portion down below the flared area so it fits inside the steering column


welding/sleeving the female splined shaft to s14 upper steering shaft





upper column completed



U joint that connects to the output shaft of the motor welded to lower section of the s14 steering shaft


completed EPS s14 column vs stock




You need to heat the duct work here and slightly deform it to make room for the electric motor


installed



Here is the controller I used. Super easy to do.
https://www.ebay.com/itm/28439860755...sAAOSw~oNhYvX2
and where I mounted the potentiometer. You can also see where the lower cover had to be trimmed some to clear the electric motor.

[afishysilvia]

Doing the same on mine with a Prius motor. Very cool, are you able to run that in safe mode?

[silviaks2nr]

It works properly with it de powered and no assist if that's what you mean!

[tuzzio]

This thread is awesome. Sending it over to a certain youtuber I know who never put PS back on his Kouki with his k-series swap

[e1_griego]

Great thread!

Has anyone tried this?

https://www.vergoauto.com/s13-electric-power-steering

[AKADriver]

Haven't used it but, that looks like the Toyota/Nissan/Kia module that will run properly in failsafe mode (no controller) and a custom billet bracket for the lower column mount. Very trick.