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Harmonic Balancer ???

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Old Feb 27, 2020 | 11:30 AM
  #21  
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Originally Posted by ttx350z
So with both AC and serpentine belt removed it still squeaks? Doesnt sound like a pulley to me since they’re not spinning.

Sounds like a lifter is eating into the camshaft Which is fairly common or a spun bearing.
No internals are quiet as a mouse. No tapping or anything at idle. Idles dead silent.....it’s definitely an external sound that linked to the Crankshaft pulley spinning. Either bolt loose or rubber becoming detached sound that comes alive under load and rpms.

Cannot even hear in neutral revving......only squeals once car in motion under load 3rd gear/4th gear 1800-2000rpms let’s out a screech then above becomes silent again with barely detectable squealing.

will know for sure when it comes out.

Last edited by badass7; Feb 27, 2020 at 11:35 AM.
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Old Feb 29, 2020 | 12:34 AM
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Wouldn’t the sound of lifters eating cam or Rod bearings be a constant noise More of an internal knock or tap and not one associated with rpms And a clear External noise related to Revolutions of the Crankshaft Pulley itself.
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Old Feb 29, 2020 | 12:50 AM
  #23  
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For a collapsed lifter, sure.

But for a lifter roller eating into the cam lobe, it’ll squeak in relation to the crank pulley since the crank mounts onto the crank which is tied to the cam via the timing gear and chain.

Heres an example of the lifter eating the cam in the first minute of the video.

Last edited by ttx350z; Feb 29, 2020 at 12:52 AM.
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Old Feb 29, 2020 | 02:00 AM
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Originally Posted by ttx350z
For a collapsed lifter, sure.

But for a lifter roller eating into the cam lobe, it’ll squeak in relation to the crank pulley since the crank mounts onto the crank which is tied to the cam via the timing gear and chain.

Heres an example of the lifter eating the cam in the first minute of the video.
https://youtu.be/vj_GUubRmHE
Ok, nah that’s def not sound I’m getting. My idle smooth, dead quiet. The only time chirping/screech comes to life is once I am in gear driving and under load and again only in certain spots 1800-2000rpm clear as day. Rest of rpms smooth and nearly inaudible.

After driving for hour or so, high speed the high pitched squeal at 1800-2000rpm turns into a sound of rubber slipping. A more dull sound which leads me to believe that Harmonic balancer is becoming detached and after heating up from driving the pitch in noise I’m getting changes.

Last edited by badass7; Feb 29, 2020 at 10:19 AM.
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