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03-24-2008, 02:47 PM | #1 |
Former Vendor
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How To: 2008 WRX/STi Coilover Install
This is a how to install for 2008 Impreza Coilover install.
The factory suspension is very well designed, but as other previous models has room to improve on. And this is where the Cusco Zero2-E coilovers come in. They offer a great Daily Ride, and can be a powerfull tool at AutoX and Track Days. Things needed: Coilovers Tools: 19MM Socket (6 point) 19MM Open end Wrench 12MM Open End Wrench 14MM Deep Socket 14Mm Open End Wrench 17MM 6 point Socket 17MM Open end wrench Allen key to hold the sway bar end link from spinning. Braker Bar Torque Wrench. And misc. extensions 1) Jack up the car, Put it on Jack Stands, and take off the tires. 2) Front Suspension is first. Take off the Brake line and the ABS wires off the Strut. 3) Take off the 2 lower bolts that hold the strut to the knuckle. 4)Take off the 3 top bolts that hold the top hats to the Chassis. Be careful, as the strut will be out after this. So make sure not to damage your outer axle boot. New Vs Old As you can tell the new coilovers are VERY low. We had to raise them about 1" to clear our race rims w/ tires. However with stock rims you might be able to get away with running the drop. But they are LOW! 5) Now go backwards. Put the top hat in so that the camber plate is sitting side to side. And tighten the top hat bolts. 6) Attach the Brake Line and the ABS wires to the strut.
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Last edited by RallySport Direct; 04-01-2009 at 05:47 PM. |
03-24-2008, 02:48 PM | #2 |
Former Vendor
Member#: 33174
Join Date: Feb 2003
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RMIC
Location: Salt Lake City Utah
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7) Now insert the 2 lower Bolts to attach the strut to the knuckle. And Place the Camber bolt so that your tires to not rub on the strut. (Be careful, as this can ruin a brand new set of tires and coilovers very fast if not set up properly)
Rear 8) Rear is straight forward. Make sure that the rear sway bar is not attached to the suspension, as it will not allow the arm to drop far enough to get the stock strut and spring out. 9) Take out the middle bolt thats in the picture as that holds the strut to the lower arm. This thing is TIGHT! So a breaker bar and a 6 point socket are a MUST to not strip the nut! 10) Take out the trunk mat and the 2 plastic side pieces to expose the top of the rear suspension. The 2 plastic covers on the inside have tabs on the back of them that will need to be slid up to allow the Covers to come out. 11) Take off the 2 top hat bolts and the rear suspension will be ready to come out. At this point you will need to press the lower suspension arm down to give you enough clearance for the strut to come out. OLD VS NEW 12) Now work backwards. Put the Top hat in place and tighten the 2 nuts. Then jack up the lower arm so that the new strut will go into the lower arm and insert the bolt. TQ spec for the lower arm is 100ftlbs according to a local tech. And now tighten the end links as well that you removed. You are almost Done! After you do all 4 corners make sure all the spring purges are tight, and that all the hardware(bolts) are tight to factory spec. Lower the car and tripple check everything. Then slowly start doing figure 8's and listen for rubbing or clunking. If everything is ok, go and get a alignment ASAP! Last edited by RallySport Direct; 04-01-2009 at 05:48 PM. |
03-24-2008, 02:48 PM | #3 |
Former Vendor
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Join Date: Feb 2003
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Enjoy!
Kirill RallySportDirect.com Last edited by RallySport Direct; 04-01-2009 at 05:48 PM. |
03-24-2008, 05:39 PM | #4 |
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Vehicle:2015 Subaru STI 17Forester / 18Crosstrek |
Are these 08 STi specific or are they from another model?
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03-24-2008, 05:42 PM | #5 |
Former Vendor
Member#: 33174
Join Date: Feb 2003
Chapter/Region:
RMIC
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They are 2008 Sti Specific.
But this install should be the same for other 08 Impreza models. |
03-24-2008, 06:05 PM | #6 |
Scooby Guru
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Price?
Looks great BTW. |
03-24-2008, 06:17 PM | #7 |
Former Vendor
Member#: 33174
Join Date: Feb 2003
Chapter/Region:
RMIC
Location: Salt Lake City Utah
Vehicle:Chat Email or Phone! 888-457-2559 |
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03-25-2008, 12:17 PM | #8 |
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SWIC
Location: El Paso/Albuquerque, NM
Vehicle:2019 STi Dark Grey |
I love my Cuscos! Makes a big difference on the 08s!
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04-11-2008, 06:23 PM | #9 |
Former Vendor
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^^^^^
This man speaks the truth! |
04-11-2008, 08:05 PM | #10 |
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MWSOC
Location: Fargo, ND
Vehicle:2013 BRZ LIMITED SWP |
Cost shipped to 58501, and do you have the Power bracers, sways, and strut bars in stock. Going to be a Cusco whore!
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04-14-2008, 11:45 AM | #11 |
Former Vendor
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PM Sent
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04-14-2008, 02:07 PM | #12 |
Vendor
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Awesome write up guys!! Great!
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09-27-2008, 06:33 PM | #13 |
Scooby Newbie
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Vehicle:2008 Impreza Dark Grey Metallic |
thanks!
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10-06-2008, 01:31 AM | #14 |
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Vehicle:1992 legacy turbo silver |
sweet!
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10-06-2008, 01:31 AM | #15 |
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oh and thanks!
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10-06-2008, 01:32 AM | #16 |
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awsome write up aswell
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04-18-2009, 12:22 AM | #17 |
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Tri-State
Location: East Rutherford, NJ
Vehicle:2008 WRX 5dr 5MT Spark Silver Metallic |
alignment numbers
what kind of alignment numbers have you used, especially camber? what was the net drop?
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04-20-2009, 12:03 PM | #18 |
Former Vendor
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It all depended on what the car was used for that weekend. We have ran the drop on average of 1.5" over stock.
On the street the camber was -2.5 Front, and -2.0 Rear On the Track, front was -4.2, Rear was -2.0 |
04-22-2009, 12:33 PM | #19 |
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Thanks for the write up!
Do you have anything else done to the suspension? I dunno if the WRX is different, but there is a guy who has a 2008+ WRX with BC coilovers on his car and he can only get -1.5* of camber out of the front. How are you getting that much camber? |
04-22-2009, 12:41 PM | #20 |
Former Vendor
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The car has extensive suspension work, as its set up for road racing.
However for the front camber, that was with Maxing out the front camber plates along with maxing out the front lower Camber bolts. |
04-23-2009, 02:14 AM | #21 |
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Any roll center adjusters? SCC is doing a tech article on a 2008+ WRX and they replaced the roll center adjusters to get more camber. Is that really necessary?
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04-23-2009, 01:25 PM | #22 |
Former Vendor
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The Roll Center kit allows you to bring the lower control arms and the outer tie rods to a proper angle. If the vehicle is lowered to much the arms get flipped, causing what is know 'bump steer', and a couple other issues. But it is not REQUIRED.
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04-23-2009, 09:53 PM | #23 |
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To my understanding, because of the strut design, the lower the car is, less negative is achievable.
ENTER Roll Centers. Thanks for your help, I'm only concerned because I want to run an aggressive setup and I need camber. 1.5* won't cut it. |
04-24-2009, 06:44 AM | #24 |
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With regard to alignment: do you give it extra caster (not camber) since you dropped the nose a bit more than the back (or so it seems)?
IIRC, more caster gives better straight line stability vice versa? Thanks, Walter |
04-24-2009, 01:21 PM | #25 |
Former Vendor
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Roll center kits will bring down the outer tie rods and front lower ball joint. So if you go so low that your arms are not facing up, they will help to bring them down to a more reasonable angle.
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