C3 Vette Registry - The Best Resource on the Net for C3 Vettes! C3 Vette
Forums -> C3 Driveline Components
Not Logged In! Login or Register!  Users Online: 12 / Help 
Features  Find C3 Parts on ebay in only 2 or 3 clicks!  | Add YOUR C3 to the Registry

Supporting Vendors
VetteBookStore.com
Bair's Corvettes
Mid America Motorworks
Volunteer Vette Products
CorvetteClothing.com

C3 of the Month
None Current
Enter Yours Today!
Online C3 Show
13
C3s are Registered

Vanity Plates
MYMSTRS
Easy Rider
Featured Links

Buy Now
Kindle
Kindle


Corvette by the Numbers
Corvette by the Numbers


Corvette Fuel Injection & Electronic Engine Control: 1982 through 2001
Corvette Fuel Injection & Electronic Engine Control: 1982 through 2001


The Corvette Dynasty (Hardcover)
The Corvette Dynasty (Hardcover)



| Hide Signatures and Profile Pics

 New Topic New Topic Post Reply Reply New Poll New Poll Search     Search Page [1]  
9/2/11 6:55pm - Original Message: 'is this normal in an independent rear suspension?'
hmel '74
Former Member
- Send Private Message


Carlisle, PA - USA

Vette(s):
1974 mille miglia red with oxblood interior 355ci, 320hp

Joined: 9/4/2005
Posts: 533
Im thinking its not.
when I am crawling at idle (taking foot off brake pedal and just the idle is pulling the car) it sometimes feels like one, or both of the rear wheels are rocking back and forth a bit.  I guess that's the best way to describe it.
almost as if the wheels are loose. (and before anyone asks, I checked, they aren't loose Wink).
However, once I get moving, it straightens out and its fine.

does this sound like worn universals?  the driver's side is tight as a drum all around.  the passenger side has a tiny bit of play in the wheel end universal joint but nothing extremely bad (yet)
 Reply Reply  Quote Reply w/Quote
 
Support C3VR!
Suport our advertisers
9/2/11 7:25pm - Reply: 'Re: is this normal in an independent rear suspensi'
indy99
Standard Member
- Send Private Message


Newport, MI - USA

Vette(s):
1980 L-48 still in the middle of a frame-off.

Joined: 6/9/2005
Posts: 923
Check your tires.  Sometimes a broken belt will do that side to side thing.  I had that on another car.

____________________________________

Corvettes and women are the same...You want to make love to them but they keep breaking down.
 Reply Reply  Quote Reply w/Quote
9/2/11 7:37pm - Reply: 'Re: is this normal in an independent rear suspensi'
VETTENUT Lifetime Member
Lifetime Member
- Send Private Message



Vette(s):
1974 Stingray and 2004 Six-speed Convertible

Joined: 1/27/2003
Posts: 52

Do you hear rear tire noise at speed or is it quiet? Have you had someone walk/run beside the car at idle to see if they hear any grinding or friction noise from either side? I concur with Indy that you can get that "wobbling feeling" from a damaged side-wall belt.

 Reply Reply  Quote Reply w/Quote
9/2/11 10:31pm - Reply: 'Re: is this normal in an independent rear suspensi'
Adams' Apple Lifetime Member
Lifetime Member
Moderator
- Send Private Message


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: 19449
Too much camber can cause that, but if that was the case, you would hear the half-shafts binding up, and it wouldn't go away as you speed up. I'm in agreement with the other fellers...I'd be looking at the tires....soon!

____________________________________
Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
 Reply Reply  Quote Reply w/Quote
9/2/11 11:22pm - Reply: 'Re: is this normal in an independent rear suspensi'
hmel '74
Former Member
- Send Private Message


Carlisle, PA - USA

Vette(s):
1974 mille miglia red with oxblood interior 355ci, 320hp

Joined: 9/4/2005
Posts: 533
Well, here's the kicker. Tires can't be the issue. I've rotated them 2 or 3 times since I've had the car. So its done it with different tires.

____________________________________

(click to see a larger version)
 Reply Reply  Quote Reply w/Quote
9/3/11 6:22am - Reply: 'Re: is this normal in an independent rear suspensi'
yostusota
Former Member
- Send Private Message


York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Does it rock side to side or front to back....a test drive friday would have eliminated all this..can it wait till next weekend..maybe we can meet up.. Rich

____________________________________

My first parade at Carlisle 2010
 Reply Reply  Quote Reply w/Quote
9/3/11 8:14am - Reply: 'Re: is this normal in an independent rear suspensi'
hmel '74
Former Member
- Send Private Message


Carlisle, PA - USA

Vette(s):
1974 mille miglia red with oxblood interior 355ci, 320hp

Joined: 9/4/2005
Posts: 533
Rich - it rocks from side to side. Yeah, maybe we can meet up one of these days next weekend. It can certainly wait (it's done this for 5 years, what's one more week) ;)

____________________________________

(click to see a larger version)
 Reply Reply  Quote Reply w/Quote
9/3/11 10:57am - Reply: 'Re: is this normal in an independent rear suspensi'
Adams' Apple Lifetime Member
Lifetime Member
Moderator
- Send Private Message


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: 19449
Moving tires around MAY not necessarily eliminate one(or more) as the cause. A slipped belt on a tire will rock the car side/side regardless of if it is on the front or the rear.
That being said, I'm sure you're satisfied that the tires are in good shape.
That leaves only an issue with the halfshafts, or the spindle bearings. Either of those SHOULD have a noise associated with it.
What does the rear spring look like, if you look at it from the rear? Straight, bent up slightly, or down slightly?
Are the rear tires perpendicular, as in, straight up/down, or do they lean in at the top or bottom?(or does one lean more than the other?)
You didn't mention if there was any noise associated with the rock, but is there?

Of course, a bent rim would do this, too....


____________________________________
Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
 Reply Reply  Quote Reply w/Quote
9/3/11 9:14pm - Reply: 'Re: is this normal in an independent rear suspensi'
hmel '74
Former Member
- Send Private Message


Carlisle, PA - USA

Vette(s):
1974 mille miglia red with oxblood interior 355ci, 320hp

Joined: 9/4/2005
Posts: 533
I believe Ive found the problem. I think it is tire related like you've all said. Ill explain more tomorrow when I can get on my home computer.

____________________________________

(click to see a larger version)
 Reply Reply  Quote Reply w/Quote
9/3/11 11:23pm - Reply: 'Re: is this normal in an independent rear suspensi'
yostusota
Former Member
- Send Private Message


York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Glad you have found it..wonder if it was the tire you bad patche up..got to be really careful with those.. Rich

____________________________________

My first parade at Carlisle 2010
 Reply Reply  Quote Reply w/Quote
9/4/11 9:18am - Reply: 'Re: is this normal in an independent rear suspensi'
hmel '74
Former Member
- Send Private Message


Carlisle, PA - USA

Vette(s):
1974 mille miglia red with oxblood interior 355ci, 320hp

Joined: 9/4/2005
Posts: 533
I'm thinking the problem lies in the way my tires are worn.
The back tires were up front for a long time and I need front A-arm bushing badly. 
The front tires tend to get worn on the outside first while the inside of the tire is still practically brand new.  (worn at a side to side angle)
And with the tires so big (255/60's) thats a lot of width to be angled like that.  so Im thinking since the tires arent "flat" across the bottom, they end up basically being on one edge and not necessarily flat on the ground when mounted on the rear.  I think I can just feel this unevenness more when im crawling at idle speed
does this make sense?

____________________________________

(click to see a larger version)
 Reply Reply  Quote Reply w/Quote
9/4/11 9:28am - Reply: 'Re: is this normal in an independent rear suspensi'
yostusota
Former Member
- Send Private Message


York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
It could be...there would have to be highs and lows in the tire not just flat across..usually cars that are really in need of an alignment will wear the tires like you describe.. but to really feel it they should have a wave appearance to the tread..not just worn on the outside and tons of tread on the inside..meaning the tread is uneven all over the tread pattern..if you run your hand over the tire does it feel like a wave or is it smooth tread all the way across..kinda hard to explain..maybe a pic of the tire from the side would help.. Rich

____________________________________

My first parade at Carlisle 2010
 Reply Reply  Quote Reply w/Quote
9/4/11 9:50am - Reply: 'Re: is this normal in an independent rear suspensi'
hmel '74
Former Member
- Send Private Message


Carlisle, PA - USA

Vette(s):
1974 mille miglia red with oxblood interior 355ci, 320hp

Joined: 9/4/2005
Posts: 533
no, tire is smooth all across. Just a lot more tread on the inside than the outside.
I was thinking that when I moved them to the rear, only the "high" side is essentially touching the ground until it gets worn. im exaggerating this a bit, but each tire doesn't sit as flat (side to side) in the rear as it did in the front now


____________________________________

(click to see a larger version)
 Reply Reply  Quote Reply w/Quote
9/4/11 12:54pm - Reply: 'Re: is this normal in an independent rear suspensi'
Adams' Apple Lifetime Member
Lifetime Member
Moderator
- Send Private Message


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: 19449
Makes sense IF the rear alignment is off a little. The tire may be trying to slide off in different directions due to a toe in-out problem, and the sorta snapping back....that could give you the sensation you feel, since the tires are worn like you describe...
Kinda like a shopping cart with a screwed up wheel....I know ya'll know what I mean...LOL


____________________________________
Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
 Reply Reply  Quote Reply w/Quote
9/4/11 3:10pm - Reply: 'Re: is this normal in an independent rear suspensi'
Jaws79 Lifetime Member
Lifetime Member
- Send Private Message


Sykesville, MD - USA

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

Joined: 4/27/2008
Posts: 4211
I HATE gettin' carts like that!!!!!
 
Barry
 
Angry


____________________________________
"Down on the Boardwalk...

(Click image to see a larger version}
 
Lifetime Member #181
 Reply Reply  Quote Reply w/Quote
 New Topic New Topic Post Reply Reply New Poll New Poll Search     Search Page [1]  
 Forums -> C3 Driveline Components
(Moderator: Adam Wartell, Norsky, Adams' Apple)
 

 
Official C3 Vette Registry Community:
Home | Forums | Email | Who's Online | Clubs | Events | Member Stats

Other Official C3 Vette Registry Areas:
Members | Research | Shop | My Account | About C3VR
 

Corvette is a registered trademark of the General Motors Corporation(GM) & Chevrolet Motor Division. Vette Registries, LLC is responsible for all site content (except for member submitted content or where otherwise noted) and does not claim or imply that Chevrolet or GM is responsible for Official C3 Vette Registry content. Vette Registries, LLC is independent from GM and is not affiliated with, sponsored or supported by GM.  Copyright/trademark/sales mark infringements are not intended, or implied and are in fact used to support GM, Chevrolet and Corvette

Official C3 Vette Registry content is Copyright 2001-2017, Vette Registries, LLC. Content may not be reused without written consent. All Rights Reserved. NS

Corvette (Vette) Model Years on this site: 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 30