95 z28 suspension springs coming unseated
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95 z28 suspension springs coming unseated
Hi y’all made a new thread not too familiar with the forum, been a member for awhile now. I have a 95 z28 which is lowered slightly ive owned the car for 6 years and it’s always had this problem where the rear driver side suspension coil will come unseated and rub against the frame.... sometimes I’ll jack it up and re seat it but eventually it will come back unseated and causes a creaking noise. My suspension in the rear also creaks usually I’m thinking bushings but not entirely sure... I don’t have any idea why it would come unseated unless the frame was bent but it’s a clean titled car with no accidents, any info is appreciated I love my car but it’s slowly falling apart it just has bolt ons and the stock 2.73 gears (auto tranny) got 160k on her now. I’d love to build her up someday but for now she’s been my daily driver for 6 years.
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From: Hell was full so they sent me to NJ
Re: 95 z28 suspension springs coming unseated
What exactly happens when the spring becomes "unseated and rub(s) against the frame"?
The top of the spring inserts into a circular opening in the unit body, with a rubber isolator between the to spring coil and the sheet metal. It is nowhere near a frame, because it's a unit body, and there are only "subframe" reinforcements at the bottom of the chassis.
The bottom of the spring sits on a bracket on top of the rear axle housing. There is no isolator - just metal-to-metal contact. The spring is centered on top of the bracket and held there by a round projection on the bracket.
The top of the spring inserts into a circular opening in the unit body, with a rubber isolator between the to spring coil and the sheet metal. It is nowhere near a frame, because it's a unit body, and there are only "subframe" reinforcements at the bottom of the chassis.
The bottom of the spring sits on a bracket on top of the rear axle housing. There is no isolator - just metal-to-metal contact. The spring is centered on top of the bracket and held there by a round projection on the bracket.
Thread Starter
Registered User
Joined: Jan 2017
Posts: 32
Re: 95 z28 suspension springs coming unseated
What exactly happens when the spring becomes "unseated and rub(s) against the frame"?
The top of the spring inserts into a circular opening in the unit body, with a rubber isolator between the to spring coil and the sheet metal. It is nowhere near a frame, because it's a unit body, and there are only "subframe" reinforcements at the bottom of the chassis.
The bottom of the spring sits on a bracket on top of the rear axle housing. There is no isolator - just metal-to-metal contact. The spring is centered on top of the bracket and held there by a round projection on the bracket.
The top of the spring inserts into a circular opening in the unit body, with a rubber isolator between the to spring coil and the sheet metal. It is nowhere near a frame, because it's a unit body, and there are only "subframe" reinforcements at the bottom of the chassis.
The bottom of the spring sits on a bracket on top of the rear axle housing. There is no isolator - just metal-to-metal contact. The spring is centered on top of the bracket and held there by a round projection on the bracket.
I’ll have to jack it up tomorrow or Friday and take a picture. That makes sense. I think like the other guy said that isolator might’ve been removed
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From: Hell was full so they sent me to NJ
Re: 95 z28 suspension springs coming unseated
This question reminded me of a question/answer in the 4th Gen FAQ, referencing a factory service bulletin for a "clunking" noise:
4th Generation (1993 - Present)
Q: What's that hollow clunking noise from the rear over bumps?
A: A clunk is most likely the rear springs which are "popping" over bumps. If you have squeak, it's probably caused by the metal springs rubbing against their metal perches. In either case, a Technical Service Bulletin (#B005001) calls for the placement of rubber isolators at the bottom of the springs to act as cushion. You can probably do this yourself by wrapping some rubber hose around the bottom coil (down by the axle) of each spring.
A: A clunk is most likely the rear springs which are "popping" over bumps. If you have squeak, it's probably caused by the metal springs rubbing against their metal perches. In either case, a Technical Service Bulletin (#B005001) calls for the placement of rubber isolators at the bottom of the springs to act as cushion. You can probably do this yourself by wrapping some rubber hose around the bottom coil (down by the axle) of each spring.
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From: Euclid,Ohio
Re: 95 z28 suspension springs coming unseated
The rubber isolator not only locates but keeps the spring under tension/slightly compressed so when the suspension is at full extension, the spring stays where it's supposed to be. It acts, along with it's cushioning ability, as a 11/16" spacer (just measured one) on top of the spring.
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