Rear End Bumper Bottom out?

[03Sleeper]

Ok so I took my car to a track today and It was a awsome road track!
With the new springs she handled GREAT..
I only had One Mis hap, That's to say I bottomed the Rear end into the Frame bottom out bumper!!
No damage but I Hit just the same as if I was going over some rail road tracks Is there something I can do to prevent this from hitting like replace the Bumber with a Better yet smaller one? OR put in some Isolators in the rear springs?
All I need is about 1/2" to 3/4" more of play
Any help would be nice..THANKS!

 

[Ron Jeremy]

How did you do that? Did that happen during launch when you accelerated at the track on the starting point? You may need to get some dampers. I don't really know if that's what you call them, but they would prevent your rear end from hitting the underneath frame of your car during quick launches at the track. Maybe someone else in here knows about this more than I do. I never been to the track to race so maybe I don't know what I am talking about here.

 

[03Sleeper]

How did you do that? Did that happen during launch when you accelerated at the track on the starting point? You may need to get some dampers. I don't really know if that's what you call them, but they would prevent your rear end from hitting the underneath frame of your car during quick launches at the track. Maybe someone else in here knows about this more than I do. I never been to the track to race so maybe I don't know what I am talking about here.

No I was going Track racing to check out my New H&R springs i installed and I was doing about 75MPH when I hit a Hump in the track and The font Was Fine but the Rear Bottomed out and the Rear end Hit the Bumper.
You see since I lowered the car I think the stock bumper is too close to the rear end now so i might trim it down?? Or replace it with a Smaller one..
anybody know what I'm talking about??
Please help

Here's the what it looks like
Lowered 2003 Mustang GT 5spd

 

[03Sleeper]

Can I just trim the chunck of rubber "Bumper" down some or will that hurt something?
Since I have a full take that's an extra 120lbs and I think that's why it's hitting now?

 

[nickthegenius]

You car looks good! But... did you get new shocks? I'm wondering if its a problem due to high-performance springs mixed with the stock shocks being underdampened for the H&Rs.

BTW, did you install the new pinion snubber that comes with the H&R springs? The contact could be coming from there too, I suppose if the old snubber is in place.

 

[03Sleeper]

You car looks good! But... did you get new shocks? I'm wondering if its a problem due to high-performance springs mixed with the stock shocks being underdampened for the H&Rs.

BTW, did you install the new pinion snubber that comes with the H&R springs? The contact could be coming from there too, I suppose if the old snubber is in place.

Stock shocks!
You think that's my Problem??
as for the snubber I replaced it.
But I'm using the stock shocks..
What shocks do you recommend.
Thanks
Andy