Harmonic balancer
Thread Starter
Le Mans Master
Joined: Sep 2005
Posts: 5,520
Likes: 534
From: Hampshire, IL
Harmonic balancer
I now need a 2nd H B !!! If GM makes crappy ones, is there a better , long lasting one that I should know about to replace it with.
Thanks to all that help.
C6 2006 Z51 44,245 miles driven almost every day.
Thanks to all that help.
C6 2006 Z51 44,245 miles driven almost every day.
Team Owner
Joined: Jun 2005
Posts: 46,295
Likes: 2,596
From: Northern, VA
St. Jude Donor '15
"In honor of jpee"
In your time of need, I hesitate to say "search is your friend," but it is . To shortcut that process, even tho there may be a better GM product, if you don't want to think about it again for say, another 50K+ miles, get an ATI. Again, search on CF C6 Gen and Tech will be your antidote, and may help you decide on GM or ATI.
Melting Slicks
Joined: May 2010
Posts: 2,036
Likes: 331
From: Long Island New York
As AO said, search IS your friend, many many posts in the last couple of months alone. I just bought an ATI balancer and ARP bolt and washer from Summit Racing, ordered on Tuesday and delivered on Thursday, $484 total.
Melting Slicks
Joined: Jan 2013
Posts: 2,576
Likes: 237
From: Murphy NC
My car had two OEM HB's before I bought it.
I did Jegg's which is the same HB which SLP labels. 25% under drive... 266.00 shipped and a six dollar GM OEM HB bolt.
It will last me until I sell the car at 200K miles.
ATI is good but more $$$... But it is your money.
That ARP bolt is close to 30.00.
There is a lot of Harmonic Balancer topics on here.
The search will be difficult but the information you seek is on here.
I did Jegg's which is the same HB which SLP labels. 25% under drive... 266.00 shipped and a six dollar GM OEM HB bolt.
It will last me until I sell the car at 200K miles.
ATI is good but more $$$... But it is your money.
That ARP bolt is close to 30.00.
There is a lot of Harmonic Balancer topics on here.
The search will be difficult but the information you seek is on here.
Race Director
Joined: Apr 2007
Posts: 16,023
Likes: 1,645
From: Toronto, Canada
C7 of the Year - Unmodified Finalist 2021
Burning Brakes
Joined: Apr 2011
Posts: 770
Likes: 2
From: Alexandria VA
My car had two OEM HB's before I bought it.
I did Jegg's which is the same HB which SLP labels. 25% under drive... 266.00 shipped and a six dollar GM OEM HB bolt.
It will last me until I sell the car at 200K miles.
ATI is good but more $$$... But it is your money.
That ARP bolt is close to 30.00.
There is a lot of Harmonic Balancer topics on here.
The search will be difficult but the information you seek is on here.
I did Jegg's which is the same HB which SLP labels. 25% under drive... 266.00 shipped and a six dollar GM OEM HB bolt.
It will last me until I sell the car at 200K miles.
ATI is good but more $$$... But it is your money.
That ARP bolt is close to 30.00.
There is a lot of Harmonic Balancer topics on here.
The search will be difficult but the information you seek is on here.
Any problems with your underdrive? A couple shops said they have idle problems with the alternator...
Also, is there a good non-underdrive HB from SLP? All i hear on CF are ATI or SLP 25% underdrive...
Anyone have a part number for a solid reg HB thats not ATI?
Thanks
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Melting Slicks
Joined: Jan 2013
Posts: 2,576
Likes: 237
From: Murphy NC
I have not noticed any difference going from stock to underdrive.
If you have a decent battery, there will not be any issues with idle.
My alternator still makes 13.5v - 14.0v.
The only thing I have noticed is the chirping and squealing are gone.
The car runs and functions fine. The PS, AC, water pump and alternator are all working within spec.
The pulley should be able to be changed out on the Jegg's/SLP there is a huge C clip holding in place.
You could always ask if there is an OE Size pulley available.
I wanted the small additional fuel savings which the 25% underdrive provides.
Safety Car
Joined: May 2011
Posts: 3,807
Likes: 508
From: Oshawa, Ontario
there is a simple cure for a lot of your belt squeal and harmonic balancer problems that only need done once.look on page 117,118 or 119 of the 2012 GMPP catalog.check the COPO Camaro engines on page 4 and 5 in the 2013 GMPP catalog. what do they all have on them?ATI super damper rebadged as GMPP.when GM goes racing they dont go to lose. ALMS Corvettes run 24 hour endurance races at 7,000 rpm.they all run ATI super dampers . GM will not put up with these failures on their own equipment.trouble is you will have to pay for it yourself once. these genuine GM ATI parts come as standard equipment on several LS3 engines as well as several other GM crate engines. use the appropriate ATI hb for your application. they come in stock replacement size that use your stock belts
Last edited by irok; Mar 1, 2013 at 10:29 AM.
Melting Slicks
Joined: May 2010
Posts: 2,036
Likes: 331
From: Long Island New York
ATI stock replacement is number ATI-917246, that's for the steel replacement unit, you can get a steel/aluminum replacement unit too, I think it's number 917266. ARP bolt is number ARP-234-2503.
Melting Slicks
Joined: Jan 2013
Posts: 2,576
Likes: 237
From: Murphy NC
What if he doesn't want to waste all the extra money on an ATI and ARP bolt?
Other aftermarket HB are just as good.
Because a race team uses something does not mean it is the only solution for a daily driver which may never be parked by a race track much less raced.
Some of us only want an affordable solution to the problem to get us moving again.
In this case anything other than OEM is a good choice.
Yes, I do understand that most on this forum only real the first topic and could care less about any other post below the first one.
Remeber Forest, stupid is as stupid does.
Other aftermarket HB are just as good.
Because a race team uses something does not mean it is the only solution for a daily driver which may never be parked by a race track much less raced.
Some of us only want an affordable solution to the problem to get us moving again.
In this case anything other than OEM is a good choice.
Yes, I do understand that most on this forum only real the first topic and could care less about any other post below the first one.
Remeber Forest, stupid is as stupid does.
Melting Slicks
Joined: May 2010
Posts: 2,036
Likes: 331
From: Long Island New York
The one I listed above is the stock replacement unit, all steel 6 rib and 7.53 in. diameter. I asked about the steel and aluminum unit but the ATI rep said that's more for racing, saves about 3 lbs. I think the stock steel unit weighs in at about 10 lbs., I have it downstairs so if weight is important I'll weigh it for you. And NO underdrive on that HB.
Melting Slicks
Joined: May 2010
Posts: 2,036
Likes: 331
From: Long Island New York
What if he doesn't want to waste all the extra money on an ATI and ARP bolt?
Other aftermarket HB are just as good.
Because a race team uses something does not mean it is the only solution for a daily driver which may never be parked by a race track much less raced.
Some of us only want an affordable solution to the problem to get us moving again.
In this case anything other than OEM is a good choice.
Yes, I do understand that most on this forum only real the first topic and could care less about any other post below the first one.
Remeber Forest, stupid is as stupid does.
Other aftermarket HB are just as good.
Because a race team uses something does not mean it is the only solution for a daily driver which may never be parked by a race track much less raced.
Some of us only want an affordable solution to the problem to get us moving again.
In this case anything other than OEM is a good choice.
Yes, I do understand that most on this forum only real the first topic and could care less about any other post below the first one.
Remeber Forest, stupid is as stupid does.
Pro
Joined: Jul 2007
Posts: 589
Likes: 3
From: Pacifica Ca
All this "the harmonically balanced sky is falling" made me look at my HB yesterday on my lift.
And mine still looks great. I mean, REALLY good with absolutely NO wobble.
I probably just jinxed myself now....
And mine still looks great. I mean, REALLY good with absolutely NO wobble.
I probably just jinxed myself now....
Safety Car
Joined: May 2011
Posts: 3,807
Likes: 508
From: Oshawa, Ontario
Yes, some want an affordable unit and some may want the best, arguably and according to most the ATI unit is the best. Not saying anything is wrong with your unit or it's anyway inferior to the ATI HB but to each his own. And if he doesn't want to "waste all that extra money" he'll buy a cheaper (money-wise) unit. The way I see it the OP is only looking to educate himself to his options and then he'll make his decision, good luck to him.
Last edited by irok; Mar 1, 2013 at 02:52 PM.
