20mm US STi rear sway bar retrofit [Archive] - ScoobyMods

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Peaty
01-17-2004, 12:16 PM
This is to swap the rear OEM 17mm sway bar and mounts on an 04 Forester XT with the US Impreza STi's 20mm bar. I suppose you can skip the mounts but the STi mounts appear a lot stronger.

Parts needed:

1@ 20451FE100 Sti 20mm rear sway bar
2@ 20466FE000 Bushing bracket (U shaped clamp)
1@ 20540FE200 Right STi mount
1@ 20540FE210 Left STi mount
2@ 20464AE050 STi bushing
2@ 902350013 Nuts

I got the bar from Lisa W. at Subaru of Gwinnett 800 584-8727

The mounting hardware came from Jamie (aka Subie Gal) 800.962.0822


Note: For this mod you must have the wheels with the full weight of the car on them. If you don't do this there will be force and weight on the sway bar and you can get hurt taking it off.


Tools:

Ramps - To make it easier to do the work.
Eye Protection - Lots of dirt under the car to get in your eyes
12 mm socket - for mounting brackets and bushing clamp
~10" extension - For socket to remove mounting brackets
14mm deep socket and wrench - for end link nuts
10mm open end - Remove nut that holds filler shroud
Phillips screw driver - Loosen hose clamp on Evap. Canister
Scissors or razor knife - To shorten evap. hose a little.

The removal and install of the bar is not too difficult and the pics walk you through it.

Get the car on ramps.

Take off the OEM Bar. I removed the 14mm end link nuts on each side first. I got lucky and the stud did not spin when I took the nuts off. But if it does, you can hold the back side of the stud to prevent that from happening. See pics for more detail. After the links are loose remove the bushing clamps on the mounting bracket. These are 12mm bolts (save the bolts you'll need to re-use them on the new mount) After you take one off and get to the second one make sure you or a helper is holding the bar so when the bar is loose it dosen't conk you on the head. :p The bar needs to be turned a little to get it over the exhaust.

Now remove the mounting brackets. The left side is easy to get to with a 12mm socket on the end of a long extension. The right side is a little tricky to get to the mount. The two bolts you need to remove are tucked up in there. The front bolt is easier to get to if you move the filler neck shroud aside by taking one 10mm nut off and moving the shroud to one side. The back bolt is close to the Evap canister so you'll need to use an open end. Here a gear wrench really helps. Don't forget to put the shroud back in place with the 10mm nut.

Now install the new mounts, each mount has orientation marks that show which side and direction they need to face.

Install the bushings and clamps on the STi bar. You'll see some yellow paint marks that help you locate the bushings (see pics) the clamps also have arrows on them to show which way goes toward the front of the vehicle. Position the bar in place, it's a bit of a puzzle getting the bar over the exhaust. I had to twist it around some but it will go. Get the clamp nuts and bolts on each mounting bracket. don't tighten them down yet It's easier w/ a helper to hold the bar but doable by yourself. Get the end links on and tighten the nuts. Now get the bar centered, look at each side by the end links and compare how things line up. If you need to slide the bar right and left to even things out. After you do that tighten the nut and bolt on each bushing clamp.

You are almost done but there is one thing you really should do. There is hose on the evap. canister (see pics) that is too close to the bar. Just undo the hose clamp and take the hose off (nothing will come out of the hose) and just take a little off the end and re-install it. That will give more clearance between the bar and hose.

That's it you are done.

Peaty 1/17/04

Peaty
01-17-2004, 12:17 PM
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Peaty
01-17-2004, 12:18 PM
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Peaty
01-17-2004, 12:18 PM
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Peaty
01-17-2004, 12:19 PM
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Peaty
01-17-2004, 12:20 PM
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Peaty
01-17-2004, 12:22 PM
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Peaty
01-17-2004, 12:25 PM
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Peaty
01-17-2004, 12:26 PM
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Peaty
01-17-2004, 12:27 PM
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Peaty
01-17-2004, 12:27 PM
Notice the mount goes under the evap canister bracket not on top of it.

Peaty
01-17-2004, 12:31 PM
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Peaty
01-17-2004, 12:33 PM
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Peaty
01-17-2004, 12:34 PM
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Peaty
01-17-2004, 12:35 PM
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01-17-2004, 12:36 PM
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01-17-2004, 12:36 PM
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01-17-2004, 12:37 PM
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Peaty
01-17-2004, 12:38 PM
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Peaty
01-17-2004, 12:39 PM
20..................

Peaty
01-17-2004, 12:40 PM
Some mounting hardware compares I forgot to put at the top

Peaty
01-17-2004, 12:40 PM
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Peaty
09-17-2004, 10:05 PM
Info from Jamie (aka SubieGal)

Hi guys...

RE: the 20mm rear sway bar bolt on for Forester

as you may know some of you are on that "borderline" production date and may not know what model year impreza 20mm sway bar is the right one for your particular Forester Model

how do you know what 20mm sway bar to buy for your Forester?
doh! finally figured out the EASY way to tell

Measure the bar end to end!

approx:

44.5" = 2004 STi 20mm rear sway bar

42.7" = 20mm WRX or FHI rear sway bar


this should make ordering the correct bar a much simpler task!
hope this helps!!
cheers
Jamie
_________________
www.subiegalracing.com

Peaty
02-11-2005, 11:50 AM
Along with the bar I suggest doing this too:

http://www.scoobymods.com/forums/showthread.php?t=4214

Peaty
02-25-2005, 11:50 AM
Please note the 2004 WRX STi rear sway bar is 20mm. For 2005 I understand but have not confirmed that they have increased the diameter to 22mm. A larger bar will increase the likelihood of the bar flipping (see link above for description of that) and there have been reports of the lower tab that holds the end link to the lateral link snapping with the 20mm (and aggressive driving) Mine has been fine so far. I would like to upgrade to the 20mm bar myself but not till I figure out a way to make the connection to the lateral link stronger. Just a heads up.

Peaty

Peaty
07-21-2005, 09:05 PM
Jamie (aka SubieGal) informs us that not all STi sway bars are alike

--------------------

Production dates:

10/2002 to 08/2003 - sti rear bar 20mm

8/2003 to 03/2004 - sti rear bar 19mm

01/2004 and on... - sti rear bar 20mm

so, if you are buying take off's
get the production date (driver side door jamb)
of the sti you're buying it from
to verify and clarify.

cheers
Jamie

------------------------

If you don't want to risk it you can always get one from her at this site:

www.subarugenuineparts.com

She's sure to get you the proper bar for your car :)

Peaty
04-14-2006, 09:27 AM
Some pics attached of what happens when a bar flipps.

here are some KB links that help prevent that form happening.

http://www.scoobymods.com/forums/showthread.php?t=6184

Peaty
12-31-2007, 09:25 AM
Some updated info from JM1:

I installed the STI bar w/ STI mounts, Kartboy endlinks and LLWS today by myself. Took longer than I thought and more effort but I should have known.

Anyways, I thought there were some additions that might help on my 05. Everything is pretty much the same.

With regards to the right STI mount, I was able to push the foam-covered hose (which I believe routes into the evap canister) far enough forward to get a ratchet with extension on it and then removed that bolt. Same thing with the other side, next to the filler neck. I was able to use the ratchet enough to where I could just remove the final threads with an open-ended 12-mm wrench. Same with the install of that mount.

Also, I had a hard time getting the stock lateral links removed. The nut was spinning and there was a fair amount of rust on the bolts that I wasn't going to be able to remove them without SERIOUS effort. Finally, I retightened the bolt and then used a Ryobi rotary tool kit with a small metal wheel to grind off all the surface rust on the remaining threads. Bolt came off with very minimal effort after that. My car has about 30k miles on it so I probably have a normal amount of rust on there.

Finally, it should be noted that if you are installing both a new rear bar AND new lateral links that you don't need to bother removing the link bolts from the bar itself. Only the lower lateral link bolts require removal (but then the old links are stuck to the original bar which, to me, is no big deal).

One last thing, My Kartboy bolts were 17mm.

Thanks,
Jon

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Thanks for the additional info Jon :)