92-95 EG Honda Civic Power Steering Retrofit using Toyota Prius Electric Power Assist Steering EPAS

[@phong60756]

What did you have to do to make the ignition switch mount up to the steering column

[@kmvguy]

Ignition switch is just held up by a small metal bracket on the steering column but i did have to delete the steering column locking in order to get it to mate up.

[@damianleesin3825]

😮

[@damianleesin3825]

Did u have to modify anything for the key igtion to bolt up onto the steering column to fit properly for all the plastics to bolt up

[@zesity1715]

Would this bolt on to a EG manual rack?

[@ChristianGomez-b6d]

Yea

[@zesity1715]

@ bet

[@zesity1715]

@ what else is needed ? How did u do yours ?

[@ChristianGomez-b6d]

Im still woking on it bro and i used mostly the oem ek steering coullum supports just bent the lower braket to fit but not finished yet ​@zesity1715

[@ChristianGomez-b6d]

And I can confirm it bolt up to a manul eg rack and ek hydronic rack also

[@tylernestorek383]

Did you build a bracket for this? Or did you just stick with the upper half of the civic bracket with the one bolt pressure fit in?

[@DeePimpish]

I resently installed a civic ek Colum in my eg just to fit an ep3 steering wheel. How did you make the horn work ?

[@kmvguy]

using EK clock spring wires for the horn. there’s some extra wires in there, so i’m also planning on using cruise buttons for other stuff in the future.

[@zesity1715]

So this bolts onto a dc2 powered rack?Right up to the joint correct. I utilize the ek components specified. Does the stock ek steering wheel also work?

[@kmvguy]

@@zesity1715 yes it does bolt on to dc2 powered rack, that’s what I’m using at the moment too for the faster steering ratio. And stock EK steering wheel should work because they are same as the RSX/S2000 hub.

[@zesity1715]

@@kmvguy damn thanks for the quick reply

[@benjaminlavallee1787]

@@kmvguy also bolts on the stock ek powered rack fyi just tried t :)

[@jaydeefilms6131]

whats the measurement for the bracket for the pivot mount? and is it really not possible to mount without removing the oem center mount?

[@kmvguy]

I do not have the dimensions for the pivot mount. EPAS motor is pretty big so, I don’t think it’s possible to mount the column without removing the OEM center mount.

[@kmvguy]

By the way, if you remove the OEM center mount out by drilling the rivets, it is completely reversible down the road by mounting it back up with nuts and bolts or welding it back up.

[@jaydeefilms6131]

@@kmvguy yeah ill just to see for myself what modifications ill need to do. it will be for my ek hatchback, so the column and area will be slightly different. thank you

[@charlesleake930]

great vid .....

[@loukanghexican2593]

I want to make this mods for 96-00 civic cx hatch .what do I need to? Thanks for sharing

[@kmvguy]

@@loukanghexican2593 i’m guessing it would be even easier on an EK because the steering wheel will line up with the prius spline. And power steering rack side is same for all civic/integra. only difference is between manual and power rack U-joint size.

[@loukanghexican2593]

@@kmvguy so my manual raack should work with just Prius eps ? What year Prius should I look for? Thanks

[@xyooj509]

Do you have the wiring diagram? I know the constant and ground but what wire color is for switch power on the harness? Is it 3 wires total?

[@kmvguy]

it’s just 3 wires, 12v constant, ground, and ignition. There is a diagram here. Just make sure to look under 2009 Prius. www.therangerstation.com/tech/toyota-electric-power-steering-eps-conversion/

[@xyooj509]

Thank you. I did some testing today and unless I’m wrong, the dc and eg u-joint are the same so this pruis works for both chassis.

[@kmvguy]

@@xyooj509 dc/eg u joint spline doesn’t match up to prius column, I used prius u-joint which matches up perfectly with dc power rack.

[@kmvguy]

@@xyooj509 I remember briefly eg/dc u-joint being very similar in size but there is a slight size difference and it will eventually slip under full lock. Be careful and test it on the driveway prior to driving off.

[@davidnguyen1292]

Do you still have this installed? What's your verdict on this? Did you depower the integra rack? thinking about switching from and mr2 eps to a EPAS column on my build.

[@kmvguy]

I do! But i haven’t touched this car in a good while. I’m gonna start ticker it again when the cool weather comes through. I live in GA, so it’s a LONG summer here.

[@VandaleCallender]

@@kmvguy do you still own car? I am also in GA and curious about this concersion. i have a 96 civic fully converted to 99-00

[@kmvguy]

@@VandaleCallender I do, but my car is completely down to the frames right now. Currently working on custom ABS, engine build and etc.

[@VandaleCallender]

@@kmvguy What is your IG or something bro. where are you located in GA if you do not mind me asking

[@Sammo115]

What did you power on source did you tap into for the module /ecu?

[@kmvguy]

currently it’s just straight to battery for the motor/column. module/ecu is on the ignition switch power source.

[@xellmie3890]

How and where did you get the power to power the EPAS module?

[@kmvguy]

power to the module is just tied directly to the key ignition wire. but it can be any 12V ignition. that wire is only a signal for the module. the main 12V is directly connected to the battery with the inline fuse.

[@jonas_molino]

Can you do this with a manual steering rack?

[@kmvguy]

you can do it with any rack that fits the car but the only issue is the u joint is different size different, and you would have to find the right size that fits.

[@nanocivicek4716]

So I can not mount this on an EK with oem steering rack ? :/

[@kmvguy]

I’m not sure how it will mount on a EK to be honest. While I did use a lot of EK stuff to get mine done but I don’t have any chassis dimension for the EK. “throtl” did retrofit a bigger Saturn Vue/Equinox column on their RWD EK Civic. You might want to check that video out. But I believe they did remove the AC evap and tubing and did a custom AC. kzbin.info/www/bejne/eoC6dIeZgNWBqc0

[@nanocivicek4716]

@@kmvguy Yes I already see the video but I want to keep my steering rack just remove the hydrolic power steering and put an EPS unit and I a see anther Prius swap on an ek but with no more information..

[@kmvguy]

@@nanocivicek4716 I think I know which one you are talking about. Check this thread on the honda-tech. You might be able to reach out to him or at least get a bit of more insight by checking out the thread. honda-tech.com/forums/road-racing-autocross-time-attack-19/time-attack-random-chat-all-makes-models-3367851

[@sainone67]

Did you figure aot the return to center issue?

[@kmvguy]

This car is still a long term project and i’ve not put much miles since i did the EPAS. I did add about 1.9 degree of caster but that did not help at all. But to be fair, i’ve not had this car aligned since the rack swap, and i know for sure my toe setting is off. I recently started to work on this car again. So i’m going to slowly update my forum thread again soon.

[@Michaelcsok]

Did the return back to center ever get better?

[@kmvguy]

Not yet. I believe the problem is the amount of OEM caster on these chassis. I’ve talk to other people that has the setup on different cars and they run around 4-5 degree caster and have no issues with steering returning to center. EG/DC chassis only have about 1 degree of caster from factory. And I’m aiming for around 4-5 degrees of static caster, when I finish all my suspension.

[@OmarGonzalez-so9ck]

@@kmvguy it’s been a few months since your reply, any update on this now? Curious to see if your RTC was fixed?

[@TheGabesable]

Although it's not the best solution.you could swap the front upper arm from left to right depending on how low you are you will probably get around 2*+

[@herbertsantos5790]

Don't you also need to cut it on the civic 94 sedan?

[@kmvguy]

I’m actually not sure if sedan and hatch/coupe are any different. If they are the same, only minor modification will be required as I covered. It would be reversible if you just drill out the spot welds as I did.

[@herbertsantos5790]

​@@kmvguyThanks

[@illwillblessedthebeat]

would this work on a crx

[@464159]

The u-joint is not the same size on eg. Didn't work for me

[@kmvguy]

u joint fits if you are using the integra rack. if you have none power eg rack, size is different.

[@kmvguy]

from what i remember, the stock none powered eg rack has smaller spline than the powered ones or the integra rack.

[@464159]

I was thinking about swapping the two that I don't know how to take off the u-joint

[@464159]

@@kmvguy I swap out the u-joint. Same u-joint size

[@kmvguy]

@@464159 great! good to hear you got that working.

[@etnieslolz]

Hi my civic eg4, non-srs, my car does not have an airbag, do I need this combined switch and clock spring? (this video Suzuki alto esp: kzbin.info/www/bejne/gWeuioKHZpqjr7M )

[@kmvguy]

@@etnieslolz You don’t need the clock spring but the clock spring make it easier for me to integrate the horn, steering wheel control and the combination switch. clock spring has the slot for the combination switch, so the left/right indicator would turn off after making a left/right turn. it would kind of drive me crazy not to have the horn working nor auto indicator turn off. steering wheel control is also nice to still have.

[@etnieslolz]

@@kmvguy so this is just an extra upgrade for you? :D

[@kmvguy]

@ haha yeah. I would say the horn is essential but im sure you can get that working if you have an aftermaket steering wheel and hub.