Are my rear springs dead
#1
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Are my rear springs dead
When I go over speed bumps the rear of my IROC just drops with no spring to it. Is that a sign that I need to replace my springs. I am confused because when I back up I can feel and see the back of the car bounce as if it has some spring to it. I have to replace the panhard bar, because the bushing is worn out. I just recently replaced my rear shock with Monroe, so I know I do not need shocks. What is anything am I missing? Thanks
#2
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Springs are dirt cheep, and you can change them yourself in like 5 minutes or less, especially if the shocks have just been replaced since the hardware won't be all rusted up.
Try it and see. I think it'll answer your question. Use the CC635 set.
Try it and see. I think it'll answer your question. Use the CC635 set.
#4
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Car: 88 camaro
Engine: 355
Transmission: 700R4
Axle/Gears: 3.73 posi
UMM, if your car is bouncing and bottoming out I think your shocks are done
how long ago did you change them?
To check, push down on the rear of the car and try to bounce it. If it bounces around then you need to get warranty on your shocks
It should just rebound back to normal with no bouncing at all.
I'm not disputing that your springs might be shot cause pretty much all of them are but you shouldn't have any bouncing.
how long ago did you change them?
To check, push down on the rear of the car and try to bounce it. If it bounces around then you need to get warranty on your shocks
It should just rebound back to normal with no bouncing at all.
I'm not disputing that your springs might be shot cause pretty much all of them are but you shouldn't have any bouncing.
#5
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Thanks for all the replys about the springs. I guess I be getting new ones. I will keep you guys posted when I change them out. Will the CC635 set restore it back the the orginal ride height?
#7
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Re: Are my rear springs dead
I need to know which rear spring CC635 or 565 will restore it back to the orginal ride height? I have heard different stories on both set, just need a clear answer from someone that have replaced them.
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#11
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Car: 92 B4C/1LE CHP camaro 06 vette LS2,
Transmission: iroc, 700r4, auto
Re: Are my rear springs dead
i'll sell you a set out of an 89 iroc Z28 for 50.00 shipped from bakersfield, ca. email ron09517@aol.com
#13
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Car: 91 RS
Engine: 350 TBI
Transmission: WC T5
Axle/Gears: 3.42 Posi
Re: Are my rear springs dead
Use these pics as a reference. Check out my ride height, fender well clearance, etc. This is my car is it sits now with the STOCK RIDE HEIGHT replacement IROC springs from spohn. As far as I know this is what thirdgens are supposed to look like, most have just sagged over the years because the springs get worn out.
I hit speedbumps and driveways all over town and I never even scrape my air dam.
http://img168.imageshack.us/img168/5449/p1010005py6.jpg
http://img257.imageshack.us/img257/2386/p1010006wf1.jpg
http://img405.imageshack.us/img405/8642/p1010007gz2.jpg
JamesC - you're about to have the exact same setup as me. Koni reds, Spohn's IROC springs. I installed NAPA Chassis strut mounts too at the same time.
I hit speedbumps and driveways all over town and I never even scrape my air dam.
http://img168.imageshack.us/img168/5449/p1010005py6.jpg
http://img257.imageshack.us/img257/2386/p1010006wf1.jpg
http://img405.imageshack.us/img405/8642/p1010007gz2.jpg
JamesC - you're about to have the exact same setup as me. Koni reds, Spohn's IROC springs. I installed NAPA Chassis strut mounts too at the same time.
#14
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Re: Are my rear springs dead
Did you every get you Spohn's IROC-style replacement springs yet? If so have you installed them yet? I brought the 5665 rear springs from Summit and I will be installing them this weekend. I will let everyone know how is goes.
#15
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Re: Are my rear springs dead
Hey, Dark,
Are you still running the Konis on the highest setting?
JamesC
Last edited by JamesC; 04-27-2007 at 04:55 PM.
#16
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Car: 91 Trans am
Engine: built 360 TBI
Transmission: built 700r4
Axle/Gears: 10bolt/3.23
Re: Are my rear springs dead
I put Husky variable rate springs and since, even loaded the rear never tuches the ruber absorbers over the speed bumps.
It is now 4weeks and the rear is still 1" higher then the front unless the fuelthank and the trunk are full.
I also put 4tgen isolators but the old one would still have been fine.
It is also a great improvement for driving fast, the rear hops less around.
It is now 4weeks and the rear is still 1" higher then the front unless the fuelthank and the trunk are full.
I also put 4tgen isolators but the old one would still have been fine.
It is also a great improvement for driving fast, the rear hops less around.
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Car: 91 Trans am
Engine: built 360 TBI
Transmission: built 700r4
Axle/Gears: 10bolt/3.23
Re: Are my rear springs dead
Before buying the springs and the isolators I did read some tgo treads about the isolators, and they stated the new ones 4tgen are 1" taller. But I compared them wen installig and there is no real difference maybe 1/2 inch and the conception, they were softer with holes. But in 16 years i really doubt they are going stay as tall as the old ones.
I bought the new ones because the way my rear end hopped and dropped was a real nightmair and was affraid that just changing springs wasent anough.
Changing the rear springs was the cheapest, quickest (3bolts) and efectivelyest upgrade I did on my trans am.
#20
Member
Thread Starter
Re: Are my rear springs dead
Use these pics as a reference. Check out my ride height, fender well clearance, etc. This is my car is it sits now with the STOCK RIDE HEIGHT replacement IROC springs from spohn. As far as I know this is what thirdgens are supposed to look like, most have just sagged over the years because the springs get worn out.
I hit speedbumps and driveways all over town and I never even scrape my air dam.
http://img168.imageshack.us/img168/5449/p1010005py6.jpg
http://img257.imageshack.us/img257/2386/p1010006wf1.jpg
http://img405.imageshack.us/img405/8642/p1010007gz2.jpg
JamesC - you're about to have the exact same setup as me. Koni reds, Spohn's IROC springs. I installed NAPA Chassis strut mounts too at the same time.
I hit speedbumps and driveways all over town and I never even scrape my air dam.
http://img168.imageshack.us/img168/5449/p1010005py6.jpg
http://img257.imageshack.us/img257/2386/p1010006wf1.jpg
http://img405.imageshack.us/img405/8642/p1010007gz2.jpg
JamesC - you're about to have the exact same setup as me. Koni reds, Spohn's IROC springs. I installed NAPA Chassis strut mounts too at the same time.
#22
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Thread Starter
Re: Are my rear springs dead
Good for you JamesC. I will be installing mines this weekend. I hope everything goes well. By the way what springs did you install? Did you run into any problems during your install that I should look out for? Thanks for all of your help.
#24
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Thread Starter
My springs are no longer dead
I must say to everyone who help me trouble shoot this problem it is now fixed. I install my new springs this weeked and the only thing I can say is wow. The rear feels like brand new and I no longer bottom out when I go over speed bumps. It was just like you guys told me it would be all of a 15 minute install. I am sorry I waited so long to replace them. for all the advice.
#25
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Re: Are my rear springs dead
Did you change your front springs yet? If so which front spring did you get and where did you get them from? Thanks
#27
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Car: 1987 Camaro SC, 1999 Z28
Engine: GMPP 350HO, LS1
Transmission: Built 700r4/EDGE 3200, T56
Axle/Gears: 3.42 Eaton 7.625, 3.42 Zexel Torsen
Re: Are my rear springs dead
my sport coupe looks sweet w/ the zr1's and the iroc springs, i absolutely love it. probably should look into getting rid of the gr-2s though...and maybe some 285's out back...
#28
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Car: 1984 Trans Am WS6
Engine: Minirammed 385, 396 RWHP
Transmission: T56
Axle/Gears: 3.73 Moser 12-bolt
Re: Are my rear springs dead
Um, guys....
For what it's worth:
It's a myth that springs wear out. They are pushed beyond their fatigue limit and then they change their mechanical properties, one of which is loss of spring rate. If you don't push them into resonance or overload them, they will generally settle into a set ride height, and stay there for life. I've had heavy duty KONIs on my car since 1990, and the WS6 springs have never sagged, even after 23 years. That's one of the reasons I've stuck with them all this time. The other is that they work so darned good on the autocross course that I can't bear to get rid of them!
For what it's worth:
It's a myth that springs wear out. They are pushed beyond their fatigue limit and then they change their mechanical properties, one of which is loss of spring rate. If you don't push them into resonance or overload them, they will generally settle into a set ride height, and stay there for life. I've had heavy duty KONIs on my car since 1990, and the WS6 springs have never sagged, even after 23 years. That's one of the reasons I've stuck with them all this time. The other is that they work so darned good on the autocross course that I can't bear to get rid of them!
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