Harmonic balancer ??
Thread Starter
Drifting
Joined: Jul 2006
Posts: 1,840
Likes: 7
From: no. jersey Photo by Stro
St. Jude Donor '08
Harmonic balancer ??
Has anyone noticed how much their HB wobles. I think mine is a little shakey
Any ideas about this. The dealer said its ok.
TIA David
UPDATE:
I just came from on old friends whom is a mechanic and not a shade tree type. Vic took one look and in .50 of a second he said" %^$&^. That is no good". He explained that maybe the key is already worn and maybe the crank would need to be replaced.
Any ideas about this. The dealer said its ok.
TIA David
UPDATE:
I just came from on old friends whom is a mechanic and not a shade tree type. Vic took one look and in .50 of a second he said" %^$&^. That is no good". He explained that maybe the key is already worn and maybe the crank would need to be replaced.
Last edited by theVcar; Oct 1, 2008 at 01:07 PM.
Race Director
Joined: Jun 2005
Posts: 10,909
Likes: 2,701
From: Phila Suburbs 2023 C8 & 2013 650ix
Many have noticed how much the pulley wobbles. Try a search and you will find a lot of threads.
What I learned from my experience with a failed flexible coupling in the harmonic balancer is that there isn't a hard and fixed limit for pulley wobble. Usually, it's only when the belt starts chirping that people realize something is wrong and needs replacement. The repair is the same as the "loose crank bolt" problem. Replace the harmonic balancer. A full day job. When I checked mine to see how it's running after about 10,000 miles since replacement and it was still running dead true. The ribs on the pulley should look still while running.
What I learned from my experience with a failed flexible coupling in the harmonic balancer is that there isn't a hard and fixed limit for pulley wobble. Usually, it's only when the belt starts chirping that people realize something is wrong and needs replacement. The repair is the same as the "loose crank bolt" problem. Replace the harmonic balancer. A full day job. When I checked mine to see how it's running after about 10,000 miles since replacement and it was still running dead true. The ribs on the pulley should look still while running.
Melting Slicks
Joined: Sep 2005
Posts: 2,670
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From: merritt island fl
C1 of Year Finalist (stock) 2019
2016 C1 of the Year Finalist
2015 C2 of the Year Finalist
My C-5 had a little wobble but wasn't chirping or throwing the belt. My '07 with 15Kmiles runs dead true.
Thread Starter
Drifting
Joined: Jul 2006
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From: no. jersey Photo by Stro
St. Jude Donor '08
Race Director
Joined: Jun 2005
Posts: 10,909
Likes: 2,701
From: Phila Suburbs 2023 C8 & 2013 650ix
Car should be running. Get a good flashlight and from the passenger side shine the light down on center of the rotating pulley where the belt rides. The pulley has parallel ribs in it and they should look stationary as the pulley rotates in a best case scenario.
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Thread Starter
Drifting
Joined: Jul 2006
Posts: 1,840
Likes: 7
From: no. jersey Photo by Stro
St. Jude Donor '08
Thread Starter
Drifting
Joined: Jul 2006
Posts: 1,840
Likes: 7
From: no. jersey Photo by Stro
St. Jude Donor '08
TIADavid
UPDATE:
I just came from on old friends whom is a mechanic and not a shade tree type. Vic took one look and in .50 of a second he said" %^$&^. That is no good". He explained that maybe the key is already worn and maybe the crank would need to be replaced.
Last edited by theVcar; Oct 1, 2008 at 11:09 PM.
Melting Slicks
Joined: Sep 2005
Posts: 2,670
Likes: 134
From: merritt island fl
C1 of Year Finalist (stock) 2019
2016 C1 of the Year Finalist
2015 C2 of the Year Finalist
Not familiar with that. I only know what a HB is. What is this upgrade and 10% assc? some one explain please
TIADavid
UPDATE:
I just came from on old friends whom is a mechanic and not a shade tree type. Vic took one look and in .50 of a second he said" %^$&^. That is no good". He explained that maybe the key is already worn and maybe the crank would need to be replaced.
TIADavid
UPDATE:
I just came from on old friends whom is a mechanic and not a shade tree type. Vic took one look and in .50 of a second he said" %^$&^. That is no good". He explained that maybe the key is already worn and maybe the crank would need to be replaced.
We need to be careful with the advice of people who are not familiar with the LS series engines. They are different in a few areas.
Guest
Posts: n/a
Not familiar with that. I only know what a HB is. What is this upgrade and 10% assc? some one explain please
TIADavid
UPDATE:
I just came from on old friends whom is a mechanic and not a shade tree type. Vic took one look and in .50 of a second he said" %^$&^. That is no good". He explained that maybe the key is already worn and maybe the crank would need to be replaced.
TIADavid
UPDATE:
I just came from on old friends whom is a mechanic and not a shade tree type. Vic took one look and in .50 of a second he said" %^$&^. That is no good". He explained that maybe the key is already worn and maybe the crank would need to be replaced.
Thread Starter
Drifting
Joined: Jul 2006
Posts: 1,840
Likes: 7
From: no. jersey Photo by Stro
St. Jude Donor '08
[QUOTE=WoodChuck2;1567344017]
I have 06 man
Has anyone noticed how much their HB wobles. I think mine is a little shakey
Any ideas about this. The dealer said its ok.
TIA David
Crank pulley NEWSFLASH. b/dates & Vins
THIS WAS POSTED BEFORE, CRANK BOLT PROBLEM
Per Corvette Brand Quality Mrg. Corvettes built before 12/13/04 and VIN #s before5511039 will need to have the PI 3288A performed.
This info has not been released yet but is the correct window and will make print very soon. Manual or auto will make no difference they will will both need repaired
Remember You heard it first at "Corvette Forum"
ms/z51/auto #10985
Any ideas about this. The dealer said its ok.
TIA David
Crank pulley NEWSFLASH. b/dates & Vins
THIS WAS POSTED BEFORE, CRANK BOLT PROBLEM
Per Corvette Brand Quality Mrg. Corvettes built before 12/13/04 and VIN #s before5511039 will need to have the PI 3288A performed.
This info has not been released yet but is the correct window and will make print very soon. Manual or auto will make no difference they will will both need repaired
Remember You heard it first at "Corvette Forum"
ms/z51/auto #10985