Harmonic balancer
Le Mans Master
Joined: Sep 2014
Posts: 7,001
Likes: 988
From: lake havasu city arizona
They didn't help me and I was out of time by a month on the 5 year limit 
Went with a PowerBond PB1117S done by a local shop and all is good, I'm out about $900 all told with new belts, seal, bolt and balancer
NSF
Went with a PowerBond PB1117S done by a local shop and all is good, I'm out about $900 all told with new belts, seal, bolt and balancer
NSF
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,150
From: SW Florida
2021 C6 of the Year Finalist - Modified
Here is a thought ...
If your going to have the harmonic balancer replaced, that would be the time to spend just a few extra dollars and have the new HB pinned.
At a later date, [if] you ever decide to install a supercharger, you will be so very glad you had your HB pinned while it was being replaced.
A big part of the supercharger install labor is having the HB pinned.
Something to think about ...
If your going to have the harmonic balancer replaced, that would be the time to spend just a few extra dollars and have the new HB pinned.
At a later date, [if] you ever decide to install a supercharger, you will be so very glad you had your HB pinned while it was being replaced.
A big part of the supercharger install labor is having the HB pinned.
Something to think about ...
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,629
Unless you have a extended warranty that will cover the cost of the repair, the OEM HB did what is was supposed to do, being get through the normal warranty period, then fail so you would have to take the car back to the dealer so they can get more money out of you for repairs after the initial sale.
Note; term is called planned obsolescence, and goes all the way back to the first light bulbs.
https://en.wikipedia.org/wiki/Phoebus_cartel
So if you are having to pay for the HB replacement, have a PowerBond PB1117SS (with it's front and back reinforcements to prevent it from wobbling long term) installed that is not going to fail instead.
Melting Slicks
Joined: Aug 2006
Posts: 2,409
Likes: 129
From: Fairview Heights IL
Here is a thought ...
If your going to have the harmonic balancer replaced, that would be the time to spend just a few extra dollars and have the new HB pinned.
At a later date, [if] you ever decide to install a supercharger, you will be so very glad you had your HB pinned while it was being replaced.
A big part of the supercharger install labor is having the HB pinned.
Something to think about ...
If your going to have the harmonic balancer replaced, that would be the time to spend just a few extra dollars and have the new HB pinned.
At a later date, [if] you ever decide to install a supercharger, you will be so very glad you had your HB pinned while it was being replaced.
A big part of the supercharger install labor is having the HB pinned.
Something to think about ...
ATI Performance Products 917266 GM LS 7.480 Harmonic Damper - SFI
ATI Performance Products 918993 Crank Pin Drill Fixture Kit
ARP 2342503 Stud Kit (a.k.a. Big *** Bolt -- better than the one-time OEM bolt)
Optional: Timken 100470 Crankshaft Seal
All four items total $563.43, which is not really that bad since you'll never need to spend another dime on an HB. The OEM HB typically lasts only five years, which is conveniently just beyond the expiration of most warranties.
Last edited by Eritosthenes; Feb 2, 2018 at 11:09 AM.
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