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Harmonic balancer?

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Old Dec 18, 2022 | 01:48 PM
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Default Harmonic balancer?

I had a squeak, that I couldn’t really identify. I sprayed a water stream from a squirt bottle on the belt and the squeak went away for about 30 seconds. I had read this is an easy way to diagnose a worn serpentine belt.
So I just replaced it, spun all the pulleys that I could, no squeaking, grinding. Nothing to dictate I needed to replace any pulleys.
Anyhow, new belt on, still have the squeaking noise! Upon inspection further, it seems to be coming from the harmonic balancer. I have read these are notorious for going bad in corvettes. 2005 base here.
I absolutely dread this needs replacing after watching a few videos. I do all my own work, but damn this looks quite involved!
Can anyone tell if this is the case from the video below? It may not show in the video, but it has a slight wobble 😞
thank you
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Old Dec 18, 2022 | 02:03 PM
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I just bought the Summit SFI rated 25% underdrive balancer for mine, along with 2 new belts About $250 for everything I think. Due to the side effects from my Pfizer vax I have to pay to get it done, but yeah, I watched the videos too and it would probably take me a week now to get this done if I even attempted it.
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Old Dec 18, 2022 | 02:26 PM
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ya i bought a stock balancer and paid to have it replaced. It would take quite an effort to replace myself
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Old Dec 18, 2022 | 06:20 PM
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Originally Posted by ETPhoneHome
ya i bought a stock balancer and paid to have it replaced. It would take quite an effort to replace myself
no sense in replacing a faulty balancer with another faulty one.
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Old Dec 18, 2022 | 07:41 PM
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I am wondering if anyone can tell from my video if it indeed the balancer. I found it odd that the sqeal went away when i shot water on the inside of the belt with the engine on. To me, this indicated a belt issue, not a pulley of some sort.
I suppose it could be the lower AC belt...
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Old Dec 18, 2022 | 07:59 PM
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In time, others will chime in with their thoughts. I’m not so sure it is the HB.
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Old Dec 18, 2022 | 08:23 PM
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Sounds more like metal contact than belt

you can drop cradle and raise engine for clearance, It’s not fun but it’s not impossible to swap if it is the damper
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Old Dec 18, 2022 | 08:30 PM
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raise the engine? damn.. i don't want to get into that mess.
Any tests to confirm what it is?
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Old Dec 18, 2022 | 08:57 PM
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Is it wobbling? Squeaky or not, if it's wobbling, it's recommended to be replaced.
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Old Dec 18, 2022 | 09:21 PM
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Originally Posted by JasonAndrew
Is it wobbling? Squeaky or not, if it's wobbling, it's recommended to be replaced.
Very slight wobble, like maybe deflecting 1/16" maybe

Last edited by ShadowVampyre; Dec 19, 2022 at 07:45 AM.
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Old Dec 19, 2022 | 12:48 AM
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Did you try running it with the belts off?
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Old Dec 19, 2022 | 07:57 AM
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No I haven't, I wasn't sure i could do that. I suppose just for a few seconds or since the water pump isn' running, it won't affect anything, right?
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Old Dec 19, 2022 | 04:01 PM
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Originally Posted by ShadowVampyre
No I haven't, I wasn't sure i could do that. I suppose just for a few seconds or since the water pump isn' running, it won't affect anything, right?
On a cold engine it will not hurt anything to run for 30 seconds with no belt
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Old Dec 19, 2022 | 08:31 PM
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either raise engine/lower cradle, or pull the rack.

Wobble looked very minor, I don't think it's the damper.
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