Coilover Install!
Welcome to the install portion of the coilover install article. I pretty much used this video, Subiespeed Install and this video from Stillen as a guide.
Before you begin! Take pictures and measurements at each wheel. Measure with the tape measure on the ground, pull center of the center cap to the apex of the fender, lock the tape measure and take the reading. Remember that you’ll need to add the length of the tape measure to your final reading (my tape measure is 3″ or 7.62cm). Stillen does it like this. I also used a spreadsheet to track ride height adjustment, view it here.
Do PRELOAD! The WRX has a different suspension in front versus the back. They both require different preload. According to Fortune Auto, the standard for this model, preload should be .25 inch for the front and .15 for the rear. Measure the spring length, probably 7 inches, install the spring, tighten and measure till the shock is at the appropriate lenght (6 3/4 front and 6 7/8 rear).
Tracking your adjustments and heights by spreadsheet is key here.
Tools Required:
Torque Specs (Front):
Torque Specs (Rear):
Quick notes about torques… the values listed in the video appear to be too high. According to the manual excerpts, particularly for the rear assembly, use:
LCA to Housing (T4) = 59ft-lbs
Shock to LCA (T5) = 62.7ft-lbs
End link to LCA (T2) = 28ft-lbs
LCA to Subframe (T4) = 59ft-lbs
or front, lower strut to steering knuckle (T9) – 114ft-lbs!
Wheel lug nuts – 85 ft-lbs
After raising the car and removing the wheels begin with the front.
Front Struts (19mm and 12mm tools):
Rear Struts (17mm and 14mm tools):
Swaybar End Link Adjustment (optional):
♣ Installing my end links the first time, I believe the lengths, while close were not perfect. This is the correct method of adjustment per SuperPro. Once the car is on the ground/ramps (not stands) so that the weight of the car is on the suspension, adjust the first link so that the bar is level, then set the other link such that it just falls in place and can be bolted up. Again, watch the pro on the video.
Height Adjustment:
Once the rear sway bar end links have been adjusted using ramps, lower the car and begin the final height adjustments. Based on Stillen’s video, base height when on the ground to the apex of the fender is ~26.5″ or 67.5cm. In their video the RS-R coilovers give a drop of 1.4″ so his number is 25 3/16″. For the Silver Neomax, I had confirmed it is a minimum of a 10mm (or 0.4″) drop. We should be looking for ~66.5cm in the front. Again, Stillen says the rears are at stock 27″ (68.58cm), in his example the final rear ride height with a 1.4 is 25 9/16″.
By my reading, using my red tape measure which is ~3″ (7.62cm), a front of 59.8cm + 7.62 = 67.42cm. After install of a 10mm drop, the front reading should be 58.8cm. So a rear ride of 68.58-7.62=60.96cm on the tape and after a 10mm drop, should be 59.96cm.
BTW, this calculator is great at converting goofy fractions to decimals or metric measurements.
Finally step, go get it pro aligned. Remember to bring your specs with you!
Oh and one more thing, manual says after an alignment…
When the wheel alignment has been adjusted, perform “VDC sensor midpoint setting mode” of the VDC. <Ref. to VDC-16, ADJUSTMENT, VDC Control Module and Hydraulic Control Unit (VDCCM&H/U).> —- And it was
7) Perform reinitialization of the auto headlight beam leveler system. (Model with auto headlight beam leveler) <Ref. to LI-17, REINITIALIZATION, PROCEDURE, Auto Headlight Beam Leveler System.>
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