rear end bounce in tight corners

I have a 2017 GTPP with stock Pirelli P-Zeros and installed the following:

Ford Racing Toe Link bearings
BMR Vertical links
GT350R srpings (all 4 corners)
Steeda fixed valve dampers (all 4 corners)
Steeda rear camber adjusters
GT350R rear sway bar
CB005
Steeda IRS subframe Alignment kit
Steeda Rear Shock Mounts
BMR Rear Sway Bar End Links


I have a bounce when it a tight turn from the rear. I am not sure what is could be other than maybe the rear control arm bushing compressing and releasing maybe???? does anyone else have this or preferably had this issue and resolved it?

Bounce as it up and down motion of the body or wheel hop?

Not wheel hop its like the outer tire is grabbing and releasing or some rubber in the rear is compressing and releasing causing the rear end to bounce move around slightly.

Think like this if you push something heavy across a wood floor you know how it can kind of grab and release and bounce a bit as you slide it. that is kind of what is happening on the back of my car but there is no tire noise and it doesnt feel like its a smooth slide like a loss of traction more like something is well grabbing and releasing then the tire grabs then it happens again

I can't say I've experienced the outer tire acting a fool on my car ever but maybe you're getting LCA bind from still having the bushing. I'd have to feel this myself. You retorque that LCA bushing after dropping the car?

Did this just start after you installed the GT350 rear bar?

You do have a Torsen and I will never understand why they act so weird in slow tight turns. Mine has always felt like it skips or shifts in a way and everywhere I've taken it including a diff shop said that's normal. Maybe that's what you're experiencing, too?

maybe. my 14 didnt do it and I didnt feel it on this one until I replaced all my rear parts and tightened everything up but who knows

keltymd said:

maybe. my 14 didnt do it and I didnt feel it on this one until I replaced all my rear parts and tightened everything up but who knows

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It sounds like a lack of rear compliance in roll. Try disconnecting your rear sway bar on one side just for the heck of it. Is it only under power, or do you get the skipping/bounce at neutral throttle?

It's there under neutral throttle as well

keltymd said:

It's there under neutral throttle as well

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Yeah, try just disconnecting the bar and see if it helps. I get a slight hint of that sometimes and I have the PP rear bar.

Highly recommend not disconnecting just one side of the sway bar. You have a brake line attached to that and disconnecting one side may cause that side to articulate too far.

Disconnect both sides. I've done that to chase a noise a long time ago (wasn't the sway bar end links, it was my stock toe link's sloppy ass inner bearing).

keltymd said:

I have a bounce when it a tight turn from the rear.

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How tight are we talking? A 25mph rated curve on a road going fast, or a 90 degree right turn out of a driveway driving normally?

In the second scenario, these Torsen diff cars will skip around a bit in the rear. Even with stock suspension. Stiffer suspension just makes it more noticeable. Just how it is.

wildcatgoal said:

Highly recommend not disconnecting just one side of the sway bar. You have a brake line attached to that and disconnecting one side may cause that side to articulate too far.

Disconnect both sides. I've done that to chase a noise a long time ago (wasn't the sway bar end links, it was my stock toe link's sloppy ass inner bearing).

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Only potential issue with doing one side on this particular bar setup is that [MENTION=26233]Rebellion[/MENTION] found that the mount bushings are very tight, so it may still add stiffness even with one side disconnected.

My first thought is the sway bars. I notice this less in my auto car now that I've soften up the sway bar rates.