Nope. Why? Progressive vs Linear has been discussed at length. Ther'es a combined 500k+ miles from Cobras on here with cut springs and nothing DANGEROUS has ever happened
I have flsfc's and the only problem I have is the rubber bushings or bracketing keeps the IRS from dropping. I thought gravity alone would do it but I had to get a crow bar in between the upper mount and the car to get it to drop.
What I found easiest is jacking the rear up as high as possible and get it on jack stands. Support the IRS in the middle with a rolling jack and disassemble(relieve pressure near the rotors to get the shock bolts out). After thats done use the rolling jack to relieve pressure on the upper IRS bolts. One side comes out no problem but the other was binding so a crow bar was all I needed to get it down.
Even with the binding problem I had, the car was up on stands and back on the ground in less than 45 mins
With the upper bolts removed the rear portion of the IRS swings down. I just dropped mine again last weekend and only had to bring it down 3" to get the springs out. Make sure you are watching both upper mounts because it sounds like its not moving into place but rather catching one of the brackets and lifting the whole car. Get someone to jack the IRS up while 1 or 2 people watch both upper mounts. If that's not your problem then the car is not high enough in the air to begin withAnybody do this with welded in flsfc and have trouble getting the irs jacked back up to get the rear irs bolts back in? I've been having a helluva time with my car. It is so stiff that when I jack the irs assembly up it lifts the car off the rear jackstands and won't come within 3-4" of getting the irs bolts back in
I have flsfc's and the only problem I have is the rubber bushings or bracketing keeps the IRS from dropping. I thought gravity alone would do it but I had to get a crow bar in between the upper mount and the car to get it to drop.
What I found easiest is jacking the rear up as high as possible and get it on jack stands. Support the IRS in the middle with a rolling jack and disassemble(relieve pressure near the rotors to get the shock bolts out). After thats done use the rolling jack to relieve pressure on the upper IRS bolts. One side comes out no problem but the other was binding so a crow bar was all I needed to get it down.
Even with the binding problem I had, the car was up on stands and back on the ground in less than 45 mins
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