Everything needed for Harmonic Balancer change (help)
Thread Starter
Burning Brakes
Joined: Apr 2004
Posts: 1,032
Likes: 197
From: Atoka, TN
Everything needed for Harmonic Balancer change (help)
So my base 2012 C6 balancer is failing and I am putting my parts list together so I can order everything today and need some help/clarity.
ARP bolt needed: https://www.summitracing.com/parts/arp-234-2503
angle guage (is it needed?): https://www.summitracing.com/parts/otc-4554
balancer choices:
-Powerbond https://www.summitracing.com/parts/pbb-pb1117ss
-Summit https://www.summitracing.com/parts/sum-c2501
-ATI https://www.summitracing.com/parts/a...ette/year/2011
I’m a bit lost on which balancer. Lots of sheared bolt posts on ATI, several on Powerbond being hard to install, and crickets on Summit Racing’s.
Is there a tool to help drive the Powerbond HB?
Someone recommended a chrysler balancer puller, but didn’t respond to which one specifically. I’ve never seen Chrysler’s, just the universals.
Do I need to pin the new HB? Is there a preferred pinning kit? (My car is mostly stock but will only ever be a cam/header car, at most).
I’m a retired military aircraft mechanic and have done numerous engine builds on HD’s so I sure this job will be within my limits. Just having a small issue in finding what works best so this can be a once and done job.
Thanks in advance,
Chris
ARP bolt needed: https://www.summitracing.com/parts/arp-234-2503
angle guage (is it needed?): https://www.summitracing.com/parts/otc-4554
balancer choices:
-Powerbond https://www.summitracing.com/parts/pbb-pb1117ss
-Summit https://www.summitracing.com/parts/sum-c2501
-ATI https://www.summitracing.com/parts/a...ette/year/2011
I’m a bit lost on which balancer. Lots of sheared bolt posts on ATI, several on Powerbond being hard to install, and crickets on Summit Racing’s.
Is there a tool to help drive the Powerbond HB?
Someone recommended a chrysler balancer puller, but didn’t respond to which one specifically. I’ve never seen Chrysler’s, just the universals.
Do I need to pin the new HB? Is there a preferred pinning kit? (My car is mostly stock but will only ever be a cam/header car, at most).
I’m a retired military aircraft mechanic and have done numerous engine builds on HD’s so I sure this job will be within my limits. Just having a small issue in finding what works best so this can be a once and done job.
Thanks in advance,
Chris
Le Mans Master
Joined: Dec 2004
Posts: 5,491
Likes: 806
From: West coast CA
So my base 2012 C6 balancer is failing and I am putting my parts list together so I can order everything today and need some help/clarity.
ARP bolt needed: https://www.summitracing.com/parts/arp-234-2503
angle guage (is it needed?): https://www.summitracing.com/parts/otc-4554
balancer choices:
-Powerbond https://www.summitracing.com/parts/pbb-pb1117ss
-Summit https://www.summitracing.com/parts/sum-c2501
-ATI https://www.summitracing.com/parts/a...ette/year/2011
I’m a bit lost on which balancer. Lots of sheared bolt posts on ATI, several on Powerbond being hard to install, and crickets on Summit Racing’s.
Is there a tool to help drive the Powerbond HB?
Someone recommended a chrysler balancer puller, but didn’t respond to which one specifically. I’ve never seen Chrysler’s, just the universals.
Do I need to pin the new HB? Is there a preferred pinning kit? (My car is mostly stock but will only ever be a cam/header car, at most).
I’m a retired military aircraft mechanic and have done numerous engine builds on HD’s so I sure this job will be within my limits. Just having a small issue in finding what works best so this can be a once and done job.
Thanks in advance,
Chris
ARP bolt needed: https://www.summitracing.com/parts/arp-234-2503
angle guage (is it needed?): https://www.summitracing.com/parts/otc-4554
balancer choices:
-Powerbond https://www.summitracing.com/parts/pbb-pb1117ss
-Summit https://www.summitracing.com/parts/sum-c2501
-ATI https://www.summitracing.com/parts/a...ette/year/2011
I’m a bit lost on which balancer. Lots of sheared bolt posts on ATI, several on Powerbond being hard to install, and crickets on Summit Racing’s.
Is there a tool to help drive the Powerbond HB?
Someone recommended a chrysler balancer puller, but didn’t respond to which one specifically. I’ve never seen Chrysler’s, just the universals.
Do I need to pin the new HB? Is there a preferred pinning kit? (My car is mostly stock but will only ever be a cam/header car, at most).
I’m a retired military aircraft mechanic and have done numerous engine builds on HD’s so I sure this job will be within my limits. Just having a small issue in finding what works best so this can be a once and done job.
Thanks in advance,
Chris
Whatever bolt and balancer you use, I would install a diamond washer like the factory does. It goes between the back of the balancer and the cam gear. That was GM's solution to the problem of balancers falling off of early-production C6s. I don't see anything about the ATI hub that makes this washer any less necessary. In fact, the ATIs I've measured have a bigger I.D. than the OEM balancer, which if anything makes it more necessary.
I wouldn't pin it if you don't have to. It makes it difficult to re-install the same balancer and very difficult to install a new one without drilling another hole in your crankshaft.
Get a flywheel locker. Life is difficult enough.
Instructor
Joined: Aug 2012
Posts: 161
Likes: 40
From: Griffin GA
Everything Torque tube said...plus
make sure to replace the front cover seal.
Also since you will have access to the front of the engine, it is a good time R&R any power steering hoses, belts, or motor mounts if needed.
make sure to replace the front cover seal.
Also since you will have access to the front of the engine, it is a good time R&R any power steering hoses, belts, or motor mounts if needed.
Thread Starter
Burning Brakes
Joined: Apr 2004
Posts: 1,032
Likes: 197
From: Atoka, TN
Good call. I’ll check those consumables over tomorrow so they can be ordered if needed. Thank you.
Instructor
Joined: Jun 2021
Posts: 129
Likes: 71
From: Wiesbaden, Germany
This is what I am changing on mine. 2007. I should be doing this at the end of the month, waiting on parts.
Summit 2501 Pulley
ACDELCO 6K798 Belt $ 17.09 $ 0.00 1 $ 17.09
ACDELCO 4K410 Belt $ 9.71 $ 0.00 1 $ 9.71
ACDELCO 38462 Belt Tensioner $ 49.79 $ 0.00 1 $ 49.79
ACDELCO 38328 Belt Tensioner $ 69.99 $ 0.00 1 $ 69.99
ACDELCO 36348 Idler Pulley $ 38.79 $ 0.00 1 $ 38.79 GM
GENUINE 29602 (296-02) Crankshaft Seal $ 14.99 $ 0.00 1 $ 14.99
GM GENUINE 12557840 Harmonic Balancer Bolt $ 4.55 $ 0.00 1 $ 4.55
Crunk Pin Kit
Check PS lines, you may need to replace those since you are in there.
PS fluid to replace lost fluid
Tools you may need
Chrysler Pully Puller
Flywheel lock
Pulley install bolt
250ft lb torque wrench.
Summit 2501 Pulley
ACDELCO 6K798 Belt $ 17.09 $ 0.00 1 $ 17.09
ACDELCO 4K410 Belt $ 9.71 $ 0.00 1 $ 9.71
ACDELCO 38462 Belt Tensioner $ 49.79 $ 0.00 1 $ 49.79
ACDELCO 38328 Belt Tensioner $ 69.99 $ 0.00 1 $ 69.99
ACDELCO 36348 Idler Pulley $ 38.79 $ 0.00 1 $ 38.79 GM
GENUINE 29602 (296-02) Crankshaft Seal $ 14.99 $ 0.00 1 $ 14.99
GM GENUINE 12557840 Harmonic Balancer Bolt $ 4.55 $ 0.00 1 $ 4.55
Crunk Pin Kit
Check PS lines, you may need to replace those since you are in there.
PS fluid to replace lost fluid
Tools you may need
Chrysler Pully Puller
Flywheel lock
Pulley install bolt
250ft lb torque wrench.
Last edited by MKR_DmD; Oct 15, 2021 at 02:19 PM.
Burning Brakes
Joined: Aug 2014
Posts: 1,239
Likes: 257
From: Tampa FL
Understand if you use OEM damper bolt. there is a special torque sequence, used on that bolt
Flywheel tool
https://www.ebay.com/sch/i.html?_fro...+tool&_sacat=0
seal tool
Flywheel tool
https://www.ebay.com/sch/i.html?_fro...+tool&_sacat=0
seal tool
Safety Car
Joined: May 2016
Posts: 4,633
Likes: 1,818
From: Erlanger, Kentucky
I like the ARP balancer bolt as it is re-usable and it is a simple torque spec (245 lb-ft, if I remember). The GM bolt tightening sequence is frankly scary: Torque old bolt to 240 lb-ft, remove old bolt, install new bolt and torque to 37 lb-ft, then turn an additional 140 degrees. Ask anyone who has done this and they will tell you it feels like you are going to sheer it off in the crank.
Look up a YouTube channel called Toys4Life. He just did a 3-part video series on replacing an HB on a C5 Corvette. Pretty much everything is applicable to the C6.
As for the HB, I would go with the Powerbond.
Look up a YouTube channel called Toys4Life. He just did a 3-part video series on replacing an HB on a C5 Corvette. Pretty much everything is applicable to the C6.
As for the HB, I would go with the Powerbond.
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Thread Starter
Burning Brakes
Joined: Apr 2004
Posts: 1,032
Likes: 197
From: Atoka, TN
This is what I am changing on mine. 2007. I should be doing this at the end of the money, waiting on parts.
Summit 2501 Pulley
ACDELCO 6K798 Belt $ 17.09 $ 0.00 1 $ 17.09
ACDELCO 4K410 Belt $ 9.71 $ 0.00 1 $ 9.71
ACDELCO 38462 Belt Tensioner $ 49.79 $ 0.00 1 $ 49.79
ACDELCO 38328 Belt Tensioner $ 69.99 $ 0.00 1 $ 69.99
ACDELCO 36348 Idler Pulley $ 38.79 $ 0.00 1 $ 38.79 GM
GENUINE 29602 (296-02) Crankshaft Seal $ 14.99 $ 0.00 1 $ 14.99
GM GENUINE 12557840 Harmonic Balancer Bolt $ 4.55 $ 0.00 1 $ 4.55
Crunk Pin Kit
Check PS lines, you may need to replace those since you are in there.
PS fluid to replace lost fluid
Tools you may need
Chrysler Pully Puller
Flywheel lock
Pulley install bolt
250ft lb torque wrench.
Summit 2501 Pulley
ACDELCO 6K798 Belt $ 17.09 $ 0.00 1 $ 17.09
ACDELCO 4K410 Belt $ 9.71 $ 0.00 1 $ 9.71
ACDELCO 38462 Belt Tensioner $ 49.79 $ 0.00 1 $ 49.79
ACDELCO 38328 Belt Tensioner $ 69.99 $ 0.00 1 $ 69.99
ACDELCO 36348 Idler Pulley $ 38.79 $ 0.00 1 $ 38.79 GM
GENUINE 29602 (296-02) Crankshaft Seal $ 14.99 $ 0.00 1 $ 14.99
GM GENUINE 12557840 Harmonic Balancer Bolt $ 4.55 $ 0.00 1 $ 4.55
Crunk Pin Kit
Check PS lines, you may need to replace those since you are in there.
PS fluid to replace lost fluid
Tools you may need
Chrysler Pully Puller
Flywheel lock
Pulley install bolt
250ft lb torque wrench.
Is this the correct Chrysler tool?
Last edited by cmashark; Oct 11, 2021 at 12:43 PM.
Instructor
Joined: Jun 2021
Posts: 129
Likes: 71
From: Wiesbaden, Germany
Is this the correct Chrysler tool?
https://www.amazon.com/OEMTOOLS-2713.../dp/B0006307WC
https://www.amazon.com/OEMTOOLS-2713.../dp/B0006307WC
Thread Starter
Burning Brakes
Joined: Apr 2004
Posts: 1,032
Likes: 197
From: Atoka, TN
During my search for answers, I saw several people say the could complete this in 4-6 hours. Next time, if there ever is a next time, I am paying someone to do this! I’m on day 2 and still haven’t got this damned steering rack out.
fan is out,
abs bracket is removed
sway bar is hanging
alternator is out
PS pump is loose
cradle is loose
PS rack is not connected anywhere
if I remove the boots and disconnect the inner portions of the tie rods, I wonder if it will drop out the bottom?
fan is out,
abs bracket is removed
sway bar is hanging
alternator is out
PS pump is loose
cradle is loose
PS rack is not connected anywhere
if I remove the boots and disconnect the inner portions of the tie rods, I wonder if it will drop out the bottom?
Safety Car
Joined: May 2016
Posts: 4,633
Likes: 1,818
From: Erlanger, Kentucky
During my search for answers, I saw several people say the could complete this in 4-6 hours. Next time, if there ever is a next time, I am paying someone to do this! I’m on day 2 and still haven’t got this damned steering rack out.
fan is out,
abs bracket is removed
sway bar is hanging
alternator is out
PS pump is loose
cradle is loose
PS rack is not connected anywhere
if I remove the boots and disconnect the inner portions of the tie rods, I wonder if it will drop out the bottom?
fan is out,
abs bracket is removed
sway bar is hanging
alternator is out
PS pump is loose
cradle is loose
PS rack is not connected anywhere
if I remove the boots and disconnect the inner portions of the tie rods, I wonder if it will drop out the bottom?
First time I did a clutch change on a C5 Corvette, people said they've done it in a day. 100% bullshit. It's at least a two day job.
Keep at it, you will get it. Even when you have everything disconnected, the rack still will fight you a bit getting it out.
Instructor
Joined: Aug 2012
Posts: 161
Likes: 40
From: Griffin GA
You can remove the balancer with out removing the steering rack.
You will need to support the engine, and then lower (not remove) the front crossmember
It seems scary, but is not that difficult.
You will need to support the engine, and then lower (not remove) the front crossmember
It seems scary, but is not that difficult.
