99'CajunFirehawk157

iTrader: (57)

99% of my rear suspension on my car has been changed out to new stuff and I am pretty sure it is not coming from the rear of the car but sometimes when I hit a nice bump in the road like a speed bump going thru the parking lot, I hear a sound from the area under the passenger side seat, it sounds like a cross member or something hitting under that side of the car...anyone else have this or ever hear this type of noise? I need to get my car on a lift and get under there to check it out....

Drumer919

iTrader: (2)

What do you have for a torque arm and is the bushing good?

99'CajunFirehawk157

iTrader: (57)

Stock.....assume so but its one of the things on the list....

gun5l1ng3r

I hear the same sound when the suspension bottoms out, or is close to bottoming. If is almost like someone hit the rear passanger frame rail with a 15Lb rubber mallet...

RickyMartinZ28

iTrader: (5)

i have this weird *** problem as well

UMI Performance

iTrader: (77)

Todd,

Since you have our SFC's try to re-torque the rear control arm bolts. This sound is common once SFC's are installed that attach at the rear control arm mount. The mount requires much more pressure to compress the bushing with the SFC's installed. Trying tightening them more, up to 100 ft. lbs.

Hope that helps!
Ryan

gun5l1ng3r

Thanks for the suggestion UMI Performance...

Does this happen because the Subframes that I have welded to the rear LCA mounts are trying to bend the sheet metal away from the LCA, making a big gap and alowing them to move and clunk?

UMI Performance

iTrader: (77)

If the SFC "sandwiches" the rear control mount it will now take much more force to collapse the SFC mount and body mount in order to put the correct pressure on the bushing to hold the control arm in place.

Make sense?

99'CajunFirehawk157

iTrader: (57)

Thanks Ryan but my car did this prior to your SFC'c. So, I am hopeing torque arm...