Squeaky Belt?
Thread Starter
Race Director
Joined: Apr 2004
Posts: 16,135
Likes: 5
From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
Squeaky Belt?
Well, I week or so ago I posted about having a squeak/chirp under the hood of my vette somewhere in the belt area, so I replaced the idler pulley and tensioner pulley and now it is worse. It is speeds up when you hit the gas and it is loud. After things have warmed up it goes away!
I did replace the belt(s) and noticed that the main belt has fraid a bit on the edge, the belt was replaced prior to the other components, so I am going to get another belt today and hope that things work out.
I am getting ready to replace everything!
I did replace the belt(s) and noticed that the main belt has fraid a bit on the edge, the belt was replaced prior to the other components, so I am going to get another belt today and hope that things work out.
I am getting ready to replace everything!
Melting Slicks
Joined: Aug 1999
Posts: 3,452
Likes: 3
From: Spring, TX
I am willing to bet your balancer is wobbling. Open up the hood and look at balancer on the end of the crank and see if it has noticable run-out.
My car did this and shortly thereafter my balancer completely failed and caused significant engine damage.
It will probably need to be replaced. I would recommend a good after market pulley from either ASP or ATI. You can go either stock diameter or underdriven. Since this is most of the work in a cam swap. I would look into that as well. That is what I did.
I feel your pain.
My car did this and shortly thereafter my balancer completely failed and caused significant engine damage.
It will probably need to be replaced. I would recommend a good after market pulley from either ASP or ATI. You can go either stock diameter or underdriven. Since this is most of the work in a cam swap. I would look into that as well. That is what I did.
I feel your pain.
Thread Starter
Race Director
Joined: Apr 2004
Posts: 16,135
Likes: 5
From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
Originally Posted by gonbad
I am willing to bet your balancer is wobbling. Open up the hood and look at balancer on the end of the crank and see if it has noticable run-out.
My car did this and shortly thereafter my balancer completely failed and caused significant engine damage.
It will probably need to be replaced. I would recommend a good after market pulley from either ASP or ATI. You can go either stock diameter or underdriven. Since this is most of the work in a cam swap. I would look into that as well. That is what I did.
I feel your pain.
My car did this and shortly thereafter my balancer completely failed and caused significant engine damage.
It will probably need to be replaced. I would recommend a good after market pulley from either ASP or ATI. You can go either stock diameter or underdriven. Since this is most of the work in a cam swap. I would look into that as well. That is what I did.
I feel your pain.
Micah
Racer
Joined: Dec 2004
Posts: 405
Likes: 0
From: Virginia Beach Virginia
Originally Posted by gonbad
I am willing to bet your balancer is wobbling. Open up the hood and look at balancer on the end of the crank and see if it has noticable run-out.
My car did this and shortly thereafter my balancer completely failed and caused significant engine damage.
It will probably need to be replaced. I would recommend a good after market pulley from either ASP or ATI. You can go either stock diameter or underdriven. Since this is most of the work in a cam swap. I would look into that as well. That is what I did.
I feel your pain.
My car did this and shortly thereafter my balancer completely failed and caused significant engine damage.
It will probably need to be replaced. I would recommend a good after market pulley from either ASP or ATI. You can go either stock diameter or underdriven. Since this is most of the work in a cam swap. I would look into that as well. That is what I did.
I feel your pain.
Thread Starter
Race Director
Joined: Apr 2004
Posts: 16,135
Likes: 5
From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
Originally Posted by coast7
I have the same symptoms...which go away after about 10 minutes of driving. If the squeek is from a bad balancer, would it go away after driving a short distance? I think the wobble would be constant...but I'm no mechanic. I looked very carefully and did not notice the balancer wobbling...is the wobble so slight as not to be discernable with the naked eye?
Instructor
Joined: Sep 2004
Posts: 198
Likes: 1
From: Olive Branch MS
Originally Posted by gonbad
I am willing to bet your balancer is wobbling. Open up the hood and look at balancer on the end of the crank and see if it has noticable run-out.
My car did this and shortly thereafter my balancer completely failed and caused significant engine damage.
It will probably need to be replaced. I would recommend a good after market pulley from either ASP or ATI. You can go either stock diameter or underdriven. Since this is most of the work in a cam swap. I would look into that as well. That is what I did.
I feel your pain.
My car did this and shortly thereafter my balancer completely failed and caused significant engine damage.
It will probably need to be replaced. I would recommend a good after market pulley from either ASP or ATI. You can go either stock diameter or underdriven. Since this is most of the work in a cam swap. I would look into that as well. That is what I did.
I feel your pain.
What kind of "significant engine damage"? I ask as I have noticed a chirpping kind of sound. (After insatalling headers) And looking, I noticed, what looked like wooble to me, at the crank location..
Melting Slicks
Joined: Aug 1999
Posts: 3,452
Likes: 3
From: Spring, TX
Originally Posted by DocAcumen
What kind of "significant engine damage"? I ask as I have noticed a chirpping kind of sound. (After insatalling headers) And looking, I noticed, what looked like wooble to me, at the crank location..
It can also slide forward and cut through the steering rack.
Thread Starter
Race Director
Joined: Apr 2004
Posts: 16,135
Likes: 5
From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
Well, things have seemed to turn for the better! 
I took some advice from some of you (I finally did what I was told
) and took my 15mm and loosened the tensioner pulley and as I slowly did so, the squeak seem to disappear...SO, replaced the belt right after I tested the old (knowing the old belt was squeaking as the car idled) and when I got the new belt on, no squeak. 
So, I then called out another set of eyes and had them look at my harmonic balancer crank pulley (thanks EVIL TWIN for the education last night ) and due to coloration on the pulley it gave it the appearance that it may have had a slight wobble, not the case, straight.
SO, I think I worked out my problem. Yes, I feel pretty stupid, but I did learn some great things over the last day!
Thanks everyone, esspecially EVIL-TWIN!
Micah
I took some advice from some of you (I finally did what I was told
) and took my 15mm and loosened the tensioner pulley and as I slowly did so, the squeak seem to disappear...SO, replaced the belt right after I tested the old (knowing the old belt was squeaking as the car idled) and when I got the new belt on, no squeak. So, I then called out another set of eyes and had them look at my harmonic balancer crank pulley (thanks EVIL TWIN for the education last night
) and due to coloration on the pulley it gave it the appearance that it may have had a slight wobble, not the case, straight.SO, I think I worked out my problem. Yes, I feel pretty stupid, but I did learn some great things over the last day!
Thanks everyone, esspecially EVIL-TWIN!
Micah
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