Suspension Setup

[RockfordBoi]

Hi,

I will apologize in advance as this is not going to be easy to explain.

I have converted my car from a live rear axle to independent rear. The independent rear was for a R32 Skyline, have taken the whole rear sub-frame and made mounts on the car to mount the sub-frame to it and have had a wheel alignment done and is within spec. The concern I have is that do I need to buy some adjustable traction arms as the only thing we didn't take into consideration was rake of the sub-frame in the skyline. Is it the case that because the arms are all attached to the sub-frame that if the front of the sub-frame was higher or lower at the front sub-frame mounts that no geometry has been changed?  I Have drawn a picture to try and explain what I mean and it is a exaggeration as i do believe we are close to where it should be. Car is not tuned yet and want to get it legal before I can test it on the street.

Edited January 28, 2018 by RockfordBoi
accidently hit enter

[djr81]

No is the short answer.

by changing the way the subframe itself is located you change he amount of anti squat you have.

[GTSBoy]

....... for example, you can buy kits of uerthane pineapple rings or alloy collars that can be used to change the tilt of the subframe on the car (on the Skyline, obviously) to alter the behaviour.  You can make it hook up in a straight line a little better (more squat) or you can add a little more anti-squat to kinda help lateral grip.  These are pretty bloody small changes around the stock tilt angle.  If you have it at a rather larger difference to the original angle, it could be quite weird.  You should probably get under an R32 over a pit and measure the heights of the front and back of the subframe relative to the ground to find out if you've got it close or dropped a clanger.