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Topic: Corvettes' clunks, clacks, rattles, and squeaks

in Forum: C3 General Discussion


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Corvettes' clunks, clacks, rattles, and squeaks (1/12)
 11/9/11 1:09pm
glassic
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Roanoke, VA - USA

Vette(s):
Former--1979 L-48 auto, dark blue, oyster cloth Current--1979 L-82


Joined: 10/20/2011
Posts: 36

A Car & Driver test of a C2 Corvette once said, "It has plenty of squeaks and rattles, but they come standard." lol
 
Driving my latest C3 home for the first time at highway speeds, I couldn't believe the clatter coming from the dashboard. I e-mailed the previous owner about it, and he said it happens mostly in hot weather and at high speeds, which has turned out to be my experience too.
 
There's an occasional clunk in the drivetrain, understandable in a 30 + year old car. And there's a noise underneath that only shows up when going over road imperfections. At first I thought it was the exhaust scraping, but I now attribute it to the rear suspension compressing. Could the rear spring (I have a composite replacement) be causing this, and if so could something be done about it pretty easily since it's external?
 
I still love my 'glass and hope to have it for many years, but the stiff suspension combined with all the squeaks and rattles can be aggravating on roads that didn't seem rough until I went over them with a C3. *chuckling* Smooth roads are a pleasure, though.
 
How bad are the noises on your C3 and do you just tolerate them as part of the trade-off or have you tried to chase some down and eliminate them?
 
Bill
 
 


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Whoever dies with Jesus in his heart wins.

  
Click for larger images: 12 or 3
 
1979 L-82, close-ratio 4 spd, 3:70 gears
Rebuilt to 300 HP
Holley double-pumper, Edelbrock intake, headers
Upgraded suspension, American Racing S200 wheels
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Re: Corvettes' clunks, clacks, rattles, and squeaks (2/12)
 11/9/11 2:49pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
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You can expect a few moans and groans from an older vehicle, for sure....just like me! But...any abnormal noise is a sign of excessive wear, or damage. The under-car noise you hear is most likely a suspension bushing that has deteriorated into oblivion. I would raise the car up and have a look-see at all of the suspension components, including the shock bushings, and the shaft u-joints.
These old gals have some miles on em now, but they were never whisper quiet. Guys at the dealerships always HATED to see a Corvette come in with a noise complaint, since there was usually never a solution.
The dash noise might not be a "normal" noise....most don't have noises in the dash, unless there is a definite problem.
We would need more info, and a more detailed description of the noise(s) to help pin-point an area to check.

Besides....that's why they put radios in them, and made the roofs removable!!!LOL


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Re: Corvettes' clunks, clacks, rattles, and squeaks (3/12)
 11/9/11 6:53pm
Jaws79Lifetime Member
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Sykesville, MD - USA

Vette(s):
1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops


Joined: 4/27/2008
Posts: 4238

Mine doesn't have many squeaks or rattles, and after the new weatherstripping very little wind noise! A lot of those noises in the dash are probably the results of "Bubba" doing work on it!
 
Barry
 
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Re: Corvettes' clunks, clacks, rattles, and squeaks (4/12)
 11/9/11 7:28pm
glassic
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Roanoke, VA - USA

Vette(s):
Former--1979 L-48 auto, dark blue, oyster cloth Current--1979 L-82


Joined: 10/20/2011
Posts: 36

Well, the shocks are new and the undercarriage looks really clean but, yes, I'll have a mechanic look at it when it's in the shop for something else.
 
And the dash or bezel noises are really strange. You wouldn't think noises would come from there. I know the radio has been replaced, and that might've loosened things up.
 
I got a quote of 1,000 bucks installed for a basic CD stereo with 2 in dash and 2 rear speakers, and that's before the recommended bezel replacement (another $200 thru Ecklers). I passed. It wouldn't even have been that great a system, and for 1K? No way.


______________
Whoever dies with Jesus in his heart wins.

  
Click for larger images: 12 or 3
 
1979 L-82, close-ratio 4 spd, 3:70 gears
Rebuilt to 300 HP
Holley double-pumper, Edelbrock intake, headers
Upgraded suspension, American Racing S200 wheels
Re: Corvettes' clunks, clacks, rattles, and squeaks (5/12)
 11/9/11 9:42pm
corvette440hpLifetime Member
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That's why Corvette put on side exhaust..............(eboEvil Smile made me say this........again!!!!)Wink

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Re: Corvettes' clunks, clacks, rattles, and squeaks (6/12)
 11/9/11 11:29pm
lukesvetteLifetime Member
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HOWELL, NJ - USA

Vette(s):
1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.


Joined: 5/18/2004
Posts: 6812

Simple cure for those noises - the roar of a powerful motor!!! Evil Smile
Re: Corvettes' clunks, clacks, rattles, and squeaks (7/12)
 11/9/11 11:40pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20129

Being clean underneath won't preclude it from having worn or damaged bushings....always worth a look-see. Could also be the exhaust loose somewhere and rattling when you hit a dip/bump...not that that would EVER happen in a Corvette...
Have you checked to see if you have a spare tire back there? If not, the tub could be bouncing around, making noises.
So many possibilities...so little time...

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Re: Corvettes' clunks, clacks, rattles, and squeaks (8/12)
 11/10/11 1:04pm
DaveMLifetime Member
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Flanders, NJ - USA

Vette(s):
1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.


Joined: 1/27/2004
Posts: 2552

I'm sure mine has lots of sqeeks & etc. but between the side pipes and the stereo I wouldn't know Thumbs Up.
Dave


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Re: Corvettes' clunks, clacks, rattles, and squeaks (9/12)
 11/13/11 4:02pm
glassic
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Roanoke, VA - USA

Vette(s):
Former--1979 L-48 auto, dark blue, oyster cloth Current--1979 L-82


Joined: 10/20/2011
Posts: 36

Adams' Apple said: Being clean underneath won't preclude it from having worn or damaged bushings....always worth a look-see. Could also be the exhaust loose somewhere and rattling when you hit a dip/bump...not that that would EVER happen in a Corvette...
Have you checked to see if you have a spare tire back there? If not, the tub could be bouncing around, making noises.
So many possibilities...so little time...


It does have the spare tire intact, yes.

______________
Whoever dies with Jesus in his heart wins.

  
Click for larger images: 12 or 3
 
1979 L-82, close-ratio 4 spd, 3:70 gears
Rebuilt to 300 HP
Holley double-pumper, Edelbrock intake, headers
Upgraded suspension, American Racing S200 wheels
Re: Corvettes' clunks, clacks, rattles, and squeaks (10/12)
 11/22/11 5:28am
voiceoftjLifetime Member
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Glendale, CA - USA

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1978 Red w/oyster


Joined: 9/15/2011
Posts: 42

I simpathize, mine makes more noise than a busted chainsaw, I intend to track down and kill every rattle, creak, groan and bang.

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Re: Corvettes' clunks, clacks, rattles, and squeaks (11/12)
 11/22/11 11:14am
MikeMc71
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Tucson, AZ - USA

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Ahhhhhh....I do my C-3s...........

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Re: Corvettes' clunks, clacks, rattles, and squeaks (12/12)
 11/22/11 2:46pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20129

voiceoftj said: I simpathize, mine makes more noise than a busted chainsaw, I intend to track down and kill every rattle, creak, groan and bang.


Man...that's gonna be a daunting task......LOL


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Joel Adams
C3VR Lifetime Member #56    

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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

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