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Old 02-02-2005, 04:23 PM   #1
TheKryptKeeper
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Default AWD Brakes into 94 L wagon

Hello, I just joined today and this is my first post. I have been searching through the forum and read all of the sticky's and the information I need isn't there. My friend wrecked his 01 2.5 rs and is going to send it off to the junk yard. I wanted to know what all would be involved in taking his whole brake setup and installing it onto my 94 FWD Impreza L Wagon.

One of my concerns is that his is a 4 disk ABS setup, and mine is a 2 disk 2 drum non-ABS setup. What sort of modifications would I need to make my car ABS. And if that is too hard, can I just bypass it and put on his calipers and rotors, and install his master cylinder?

I just got this Subaru and am hooked on them. In the future I plan on doing a N/A 2.5 swap and keep my tranny. Thanks for the help!

P.S. I read all of the stickys, but still have to ask. Will his suspension fit into any subaru over the years?
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Old 02-02-2005, 04:45 PM   #2
scoobydorift
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hmm...never done a drum to disc on a FWD, but i would think that you could get the whole rear cross member with the ebrake lines,hubs,lateral links, trailing arms, rotors,calipers. thast all i can think of right now.
Rick
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Old 02-02-2005, 04:50 PM   #3
TheKryptKeeper
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Then might I also state that the RS is an AWD if that matters.
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Old 02-02-2005, 08:50 PM   #4
tbd
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Default Doesn't matter

Everything ports over so long as you convert the rear suspension to awd style. There are no fwd rear discs from what I understand. (maybe old legacies had them, not sure)

The fronts are easy, just bolt on, and keep the abs sensor bolted in to plug the hole.

The rear requires that you use the awd suspnesion knuckles, arms subframe & front diff carrier. (Unless you run dummy axle stubs at the hub & leave out the diff) The front diff carrier necessitates the clearance of the awd fuel tank. A thread here showa a great pic comparing both styles of tanks.

If you wish to do this, you may want to use the rs struts also, the fwd rears are a different length and mounts differently at the bottom.

If you pull out the entire rear suspension as one piece only ten bolts secure it in place. (not counting e-brake cable tabs & strut tops)

You can find better brake threads here under search. A few have great photos.
http://forums.nasioc.com/forums/show...&highlight=awd

Last edited by tbd; 02-03-2005 at 05:54 AM.
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Old 02-03-2005, 04:18 AM   #5
TheKryptKeeper
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I see. I am not too interested in making it AWD, so the whole rear diff thing is a little ifee. You mentioned putting in dummy rear axle stubs but I am still unclear as to why I need those.

After talking with my friend he is going to just give the car to me. It has a wrecked front end and no guts, i.e. the engine and tranny are gone. I am probobly going to us the struts, so why can't I just leave two spindeled holes on either side of the back wheels? Surely they will not affect integrity or performance.

P.S. I know that it is the wrong thread but if anyone wants some parts then tell me. It is mostly body peices, spoiler, windows, seats, pedals, whatever. Don't be afraid to ask I will sell them cheap.
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Old 02-03-2005, 06:03 AM   #6
tbd
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Default rear drivetrain

When you pull the front wheel off your car to look at the brakes, you'll notice that a nut resides between the lug bolts on the hub. That nut secures the end of the axle which passes through the hub, bearing knuckle assembly.

This layout is true for the rear also. Since you intend to install rear discs on a fwd car, you'll be using the disk brake assembly from an awd rear end. The struts have a different mounting location on the knuckle. (slightly forward to clear the axles) The axles & big nut on the end hold those rear hubs together. Thats why you need part or all of the rear axles. One or more of the members here have done the dummy axle setup. It involves only including the end of the axle w/ the nut & bolt. If you search around you'll find a description in one of the old threads, and if someone has since converted to full awd, then maybe those axle stubs are available for you to use?
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Old 02-03-2005, 12:59 PM   #7
Legacy777
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AWD 6MT EJ22T AWIC Swap

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Quote:
Originally Posted by tbd
Everything ports over so long as you convert the rear suspension to awd style. There are no fwd rear discs from what I understand. (maybe old legacies had them, not sure)
The 90-94 legacies were available with FWD, and they all had rear discs.

I'd suggest finding one of them, snag the hubs, and use them.
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Old 02-03-2005, 04:38 PM   #8
tbd
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Sidenote: If your car is fwd, you likely won't have a rear sway bar.

Like the Legacies w/ rear discs I recall seeing a fwd legacy w/ rear sway bar & mounting locations on the rear control arms. You may want to see if these fit your application if you go the fwd legacy rear disc route. The endlinks are different for the rear sways on that setup. (more like the fsb endlinks on late 80's honda accords)

The legacy fwd all disc setup sounds like it will be the lightest option if you can avoid installing the pumpkin & axles.
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Old 02-03-2005, 07:04 PM   #9
Legacy777
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AWD 6MT EJ22T AWIC Swap

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Just to throw some more confusion into the mix. Not all the 90-94 legacies had a rear sway bar. Mine was FWD & did have the stock rear sway bar. It did utilize the drop link design vs the endlink design.

My parts book says that all the 90-91 MY's had the rear sway bar. They also all had the drop link style setup.

The 92-94 MY's did not all have a rear sway bar. The 92 MY's that had a rear sway bar had the drop link style setup.

The 93-94 MY's that had a rear sway bar had the end link style setup.

Also....if you don't have a rear sway bar, and you want to get one, you will need to make sure and get the drop link style lateral links for the FWD. The AWD ones are different, and will not work with the FWD rear subframe.

One more thing to note. Sway bars that utilize the drop links are different then sway bars that utilize the endlinks. The drop link sway bar utilizes a bushing & U bracket on the drop link. The end link sway bars are just flat and have a bolt that goes through them and the end link.

However you can use an endlink sway bar with the drop link setup, IF you have the whiteline drop links that are pictured below...which you can't purchase separately. I still have mine leftover. So if you happen to go that route, let me know.

Here's some pics of my old (not stock) setup
Droplink:
http://www.main.experiencetherave.co...s/swaybar5.jpg

Endlink: (current setup after my awd & mt swap)
http://www.surrealmirage.com/subaru/...7/DCP_3407.JPG

Last edited by Legacy777; 02-03-2005 at 07:09 PM.
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Old 02-03-2005, 10:41 PM   #10
TheKryptKeeper
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I think that I can get sway bars off of the RS but am not sure about the axle stubs. The rear halfshafts are there, are they the same thing? I can take the setup for an AWD out of the RS, It looks like it will bolt up. If I do this then can I also utilize the rear sway bar? I can fabricate peices or mounts.

P.S. I am not too educated in the subaru talk cuase I have worked on bikes all my life, so rather than using terms like the pumpkin, just say rear differential. Thanks!
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Old 02-03-2005, 11:32 PM   #11
JDM_Scobaru
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Default

haha i did the rear disc swap like a month ago..if you decide to do this...youll need...

rear hubs
ebrake cables
rotors
pads
calipers
lateral links if you want a sway bar
Rear brake lines (upgrade all lines to Stainless steal too)

Zach
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Old 02-04-2005, 12:53 PM   #12
Legacy777
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AWD 6MT EJ22T AWIC Swap

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Quote:
Originally Posted by TheKryptKeeper
I think that I can get sway bars off of the RS but am not sure about the axle stubs. The rear halfshafts are there, are they the same thing? I can take the setup for an AWD out of the RS, It looks like it will bolt up. If I do this then can I also utilize the rear sway bar? I can fabricate peices or mounts.

P.S. I am not too educated in the subaru talk cuase I have worked on bikes all my life, so rather than using terms like the pumpkin, just say rear differential. Thanks!

Just for clarification....when you say halfshafts and axle stubs....are you referring the actual cv axle? Because I thought you said your impreza was FWD.......sorry just a little confused.
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Old 02-05-2005, 12:15 AM   #13
TheKryptKeeper
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I was referring to the 2001 RS. Yes, my car is FWD and it still has the cv axles and joints the part you are thinking of is the UV joints and the UV axle. It is more commonly called the driveshaft. In the RS there are 3 different types of axles that I have, those are the front cv axles and shafts, the driveshaft, and the rear axles.

Sorry about the pictures guys, I was slamed today. I set out a time to do it tomarrow morning. I am going to post general pictures of the car on the thread and I will try to send object specific photos to all of the people that had specific questions. So if you are even romotely interested in any parts then send me an IM as soon as possible.

I also want to apologize about the time that this is taking. I have been really busy with school and work but am going as fast as I can. Thanks for your patience.
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Old 02-05-2005, 03:57 AM   #14
tbd
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You can remove the entire rear drivetrain & suspension from the RS & put it into your car from the front of the big T-shaped thing to the tip of the rear exhaust. If you use the RS swaybar components you won't need to fabricate anything. The one caveat is that your fuel tank must match the underside shape of that in the RS. (saddle) I believe that's where we started this discussion: To include awd components or run rear disc brakes while retaining rear fwd components.

Personally, if you have the RS parts there already, I'd just pull whatever you need. There will be less mix n' match involved, and you will then be able to use all of the standard subaru awd aftermarket replacemtn parts.

Otherwise you could use the drop links previously described & the rear control arms from a fwd legacy in order to run a rear sway bar w/ the fwd legacy rear discs.

When I installed the awd rear end on my fwd car (to gain rear discs, sway bar & more suspension options) I pulled the entire rear end from the donor car in one piece. Easy; just large & heavy. My car already had the awd fuel tank.

Sorry about the wording; know what you mean. I get confused when people say lateral links. (traling arms? or control arms?) And if its any comfort, I'd rather be working on bikes, (background also) no crawling under to get a mouthful of grime. ugh. And the morkstands are mobile.

BTW: If you're still set on just using the disc brake knuckles & hubs w/o the rear diff, you might try this type of part to hold the hubs together:
http://cgi.ebay.com/ebaymotors/ws/eB...952362942&rd=1
You will need to confirm that they fit the rear hubs though, not the front.

Note that if you compare the rear crossmember on an awd car to that on a fwd car, the fwd car's is narrower from front to back, & the mounting ponts for the control arms are further apart, making the control arms shorter on fwds. One of the bolt holes in the chassis for the fwd car' rear x-member is where the whiteline subframe lock bolts fit on awd cars, (between the four mounting bolts on awd rear subframes) making it half as wide longitudinally. These are just things to note for fitment if you choose to mix 'n match.

Last edited by tbd; 02-05-2005 at 04:11 AM.
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