BC ER, SPL Install and Adjust

sandersd

Recently installed BC ER Type coil overs with the Swift spring upgrade (12k fr 10k r) along with SPL endlinks, front lower link (camber arm) and radius rod (traction links).

First of all - Love it! This is my first car with coil overs. The handling around corners blows away the stock Nismo setup as well as the Swift Sport lowering springs. The ride is smooth and comfortable, the turns are absolutely flat with the compression and rebound set at the middle as shipped.

I haven't had it aligned yet. The shop I wanted to take it to was closed this week so they could man their booth at the auto show. I still need to have the ride height equalized. I'm shooting for 27" at the center of the wheel arch. Anyone with suggestions based on their own experience please feel free to offer your thoughts.

I have noticed the bumps are a bit "thunky" - it sounds like hitting the underside of the car with a rubber mallet, mostly on very low speed small bumps. Is this typical of lowered coil over setups?

The other issue is the end links will not stay straight. I don't think this is the cause of the thunky sound but I would like them to stay straight and not bind. When I installed the car was on the ground with the bar loose. I installed one side with the link vertical as recommended by SPL, then adjusted and installed the other side to match. The links were vertical and centered on the ball joint.

I took some pics today with the car on the ground and as can be seen the links are twisted to the limits of their travel with the exception of the right rear.

Left front
IMG_0848.JPG

Right front
IMG_0850.JPG

Right rear
IMG_0853.JPG

Left rear
IMG_0854.JPG

They can be easily rotated back to their proper orientation and do not bind throughout their full range of travel. I'm not sure what criteria I should use to set the overall length of the end link. When I went to install the first I grabbed the bar and of course it rotates. I felt like the fat guy in Jurassic Park when he hits the sign with his Jeep and doesn't know which fork in the road to take. I couldn't find any direction of how to determine the proper location for the end of the bar but figured is should be tucked up rather than extending down lower where it could hit something.

Perhaps the rotation of the end link is normal and unavoidable.

Any advice on fine tuning the end links is appreciated.

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2014 370Z NISMO -- HKS Hi-Power Exhaust -- Swift Springs -- BC ER Coilovers -- SPL Suspension Components -- Nismo R-Tune Intake -- Seibon BD CF Hood