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Old 04-25-2003, 12:01 PM   #1
stimpy
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Default Using the USDM WRX Crossmember

I have heard opinions on both sides of the fence saying that it can or can't be used. Some say it bolts in, some say it doesn't work at all, some say you have to shim the control arm bushings to remove some slop.

I'm beginning to believe that shimming is necessary. yamarocket said you could just use the WRX wagon control arms or have the WRX control arm bushings pressed in and it will work without a hitch. I haven't been able to get him to confirm this.

How did you get it to work in your car? Using the turbo Legacy crossmember probably isn't an option for me right now since I don't want to pay the extra $200 to get one.

-Jon
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Old 04-25-2003, 02:32 PM   #2
Craig W
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for my I-Speed swap, we used the USDM 02 WRX crossmember on my '99RS. Bolted right up to the frame. We did have to shim the lower suspension arms. No big deal. You just have to use the suspension bolts from the 02 seeing as they're longer than the original bolts.
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Old 04-28-2003, 08:54 PM   #3
stimpy
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Anybody else have any comments on this?

-Jon
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Old 04-28-2003, 11:44 PM   #4
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The cross member has extra "tabs" that the WRX uses for a stiffer body. The RS doesnt have spots for these, but they dont bother anything (no need to remove them).
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Old 04-28-2003, 11:45 PM   #5
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The cross member has extra "tabs" that the WRX uses for a stiffer body. The RS doesnt have spots for these, but they dont bother anything (no need to remove them).
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Old 04-29-2003, 12:46 AM   #6
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I have one on my car. It fits fine, you do need to shim the control arms. I didnt at first and I was getting some horrible noises from the control arms moving around. I really dont think you could get away with not doing that. I did use the same bolts and I dont remember noticing they were short. The little plastic splash guards under the front bumper also do not clear well. Mine are just hanging down. However, Im sure five minutes with a blade would solve that problem.
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Old 04-29-2003, 09:18 AM   #7
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How did you guys rig up the shims?

-Jon
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Old 04-29-2003, 05:59 PM   #8
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You can use washers to take up the slack.
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Old 04-29-2003, 06:56 PM   #9
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anyone have a pic with the USDM WRX crossmember all shimmed up?? ide like to see. Ill probably go this route if i like what i see.
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Old 04-30-2003, 10:37 AM   #10
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I would reccomend a 91-94 turbo Legacy crossmember as they fit the stock RS control arms....part#20100AA111..that way you don't have to shim up the arms......the 91-94 Bolts right in...no problems...
List price for this is 366 bones....but you can probably get a used one for less than a hun....Happy wrenching



Bill
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Old 04-30-2003, 04:27 PM   #11
stimpy
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I know the Legacy crossmember works; heck, I've installed one in my car before. I had found it for $150 and that was back when they were just barely starting to disappear.

I'd much rather be able to use the new-age crossmember that I will be receiving with my engine.

I have heard that the wagon's control arms actually have the same dimensions are the GC/GF arms, but they just use a thicker bushing where it mounts to the crossmember. Anybody actually investigated this to the fullest?

-Jon
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Old 04-30-2003, 07:22 PM   #12
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Quote:
I have heard that the wagon's control arms actually have the same dimensions are the GC/GF arms, but they just use a thicker bushing where it mounts to the crossmember. Anybody actually investigated this to the fullest?
I've heard something similar to this from a friend in the business, but I can't confirm it.

Paul G.
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Old 05-02-2003, 04:24 PM   #13
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I called the dealership today and the RS control arm and the wagon control have different part numbers. However, she did mention that they both come with the front bushing (the location in question). The only way to know seems to be a direct comparison.

In this thread here, Leonardo says:

Quote:
Well the GC8 body controll arms fit the new WRX wagon. It's the WRX sedan arms that are diferent.
Unforunately, the from control arm bushings are NOT available for individual purchase. You must buy the entire control arm. The dealership doesn't have the WRX wagon control arm in stock so I can't compare them anyhow. Looks likes it's shims unless somebody has some cheap and creative way to acquire WRX wagon control arms.

-Jon

Last edited by stimpy; 05-02-2003 at 04:33 PM.
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Old 05-03-2003, 01:23 PM   #14
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Default Re: Using the USDM WRX Crossmember

Quote:
Originally posted by stimpy
yamarocket said you could just use the WRX wagon control arms or have the WRX control arm bushings pressed in and it will work without a hitch. I haven't been able to get him to confirm this.

How did you get it to work in your car? Using the turbo Legacy crossmember probably isn't an option for me right now since I don't want to pay the extra $200 to get one.

-Jon

Jon... I shimmed my control arms, I did not change the bushings or control arms, because I only had one good control arm and bushing. The bushings will fit, but you need special tools to press them in and out. The WRX wagon control arm is the same as a RS control arm, just with a wider bushing, therefor a different part number.
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Old 05-06-2003, 04:21 PM   #15
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Here is another thought for you. Instead of switching out control arms or using shims. Go out and get a 2.2 Legacy turbo cross member.

This is the ticket, fits perfectlly without shims, and you can drop in any EJ20 motor from USDM or JDM.

my 2 cents
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Old 05-06-2003, 04:30 PM   #16
stimpy
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Quote:
Originally posted by stimpy
Using the turbo Legacy crossmember probably isn't an option for me right now since I don't want to pay the extra $200 to get one.
Quote:
Originally posted by stimpy
I know the Legacy crossmember works; heck, I've installed one in my car before. I had found it for $150 and that was back when they were just barely starting to disappear.
And for what its worth, to change the crossmember, the control arms are all but out of the car anyway.

-Jon
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Old 05-06-2003, 04:57 PM   #17
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Interestingly, the FSM gives procedures for removing the front bushing so it definitely comes out with the right tools. I'm not quite sure why they would allow the removal if you can't do anything but replace the entire control arm.

I can, however, source the control arms at $50 each.

-Jon
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Old 05-06-2003, 05:41 PM   #18
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jon .. just to complicate your world a little more ..

i bought STi hardened a-arm bushings from VT sports car for ~35 each

i plan to put them in when i swap my cross member out
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Old 05-06-2003, 06:20 PM   #19
stimpy
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Excellent. That is the front control arm bushing and not the rear one, right? Are you just going to have the Subaru dealership press those bushings in?Have you compared these bushings to your current ones to confirm that they are, in fact, a little wider?

[edit] Son of a gun:
RST-2021 -- Front Control Arm, Front Bushing Pair-- $41 from www.rallispec.com

-Jon

Last edited by stimpy; 05-06-2003 at 06:34 PM.
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Old 05-06-2003, 09:14 PM   #20
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i actually bought both front a-arm mounts and rear (same location as an alk)...
when i am done there will not be any rubber in the front suspension of my car...

sorry i haven't compaired them
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Old 05-07-2003, 07:23 PM   #21
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How were you pressing those bushings in?

Also, when do you think you would be able to compare the bushings to confirm they are correct for the USDM crossmember?

-Jon
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Old 05-08-2003, 03:26 AM   #22
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I don't suppose that anyone has any information about how the USDM crossmember would fit on a forester?

-Duncan
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Old 05-13-2003, 07:02 PM   #23
stimpy
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I believe the crossmember is the same since the Forester is supposedly based on the Impreza chassis. Should bolt up fine.

The bushings have almost completely fallen through. As per Wayne at AV Sport, neither SOA nor SOJ sell the front control arm, front bushings seperate from the control arms. Rallispec is looking into Powerflex for me. Aside from that, it's shims, Legacy crossmember, or WRX wagon control arms.

-Jon
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Old 05-13-2003, 08:11 PM   #24
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I have a crossmember from a GDA STI 7 in a 98 RS. The fitment was fine, no cutting the tabs off, but I did have to shim it to get the "slop" outta the front end.
Frank
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Old 05-16-2003, 03:31 AM   #25
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Jon,
The dealer may not mind you ordering a set, or just one, control arm to take a look at and make a comparison... If you want to check into it call Chad at Mark Miller Subaru and he may be able to help you. 268 3734
Worth a try any way.
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