Harmonic balancer
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Instructor
Joined: Sep 2010
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From: Leavenworth Somewhere over the Rainbow
Harmonic balancer
I need to get a new one. I see there are many threads, some very old, on this already that jump all around on the issue and I don't want to wade through all of them. What is a good replacement and why? I'm stuck on Powerbond vs ATI. Are these the best or are there others just as good? I think I saw SLP and BBK. Anyway, mines a 2005 with 65k on it.
Safety Car
Joined: Jan 2013
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From: Missouri
St. Jude Donor '13-'14
There are many good units. Anything that isn't OEM should do just fine. Before I sold my '07 I was looking at a beautiful unit from Summit. Beware under drive, by the way. Lots of residual problems can occur. As far as the ATI? Overpriced, a.k.a. voluntary Corvette tax. You can find a fine unit from $160-$275 and it will perform just as well as the ATI.
Tolero Apto Victum
Joined: Jul 2007
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From: Woodlands TX
OP: Please check out these three threads https://www.corvetteforum.com/forums...-balancer.html & https://www.corvetteforum.com/forums...ey-issues.html & https://www.corvetteforum.com/forums...ould-i-do.html
As always each to their own, as for me I like ATI. But, as ProfessorDeath stated, anything is better then the OEM unit IMO.
Good Luck.
As always each to their own, as for me I like ATI. But, as ProfessorDeath stated, anything is better then the OEM unit IMO.
Good Luck.
Safety Car
Joined: May 2011
Posts: 3,807
Likes: 508
From: Oshawa, Ontario
There are many good units. Anything that isn't OEM should do just fine. Before I sold my '07 I was looking at a beautiful unit from Summit. Beware under drive, by the way. Lots of residual problems can occur. As far as the ATI? Overpriced, a.k.a. voluntary Corvette tax. You can find a fine unit from $160-$275 and it will perform just as well as the ATI.
Former Vendor
Joined: Dec 2011
Posts: 1,475
Likes: 29
From: Salt Lake City Utah
The ATI is a really nice piece; we use it or Innovators West (for the bling) in most of our builds. Though the price may be a little higher, you get what you pay for in this instance in my opinion.
We underdrive most naturally aspirated Vettes we build, and usually don't have a problem, but we usually don't go over 12% underdriven. 25% under is way too far, and problems often occur at this level.
Though I don't have documentation to prove it, I'm pretty sure the SLP and PowerBond balancers are the same thing.
Feel free to call, email, or PM us anytime with questions!
- Jeremy
Click HERE to send me a PM | Sales@jdpmotorsports.com | www.jdpmotorsports.com | JDP Facebook | 888.308.6007
We underdrive most naturally aspirated Vettes we build, and usually don't have a problem, but we usually don't go over 12% underdriven. 25% under is way too far, and problems often occur at this level.
Though I don't have documentation to prove it, I'm pretty sure the SLP and PowerBond balancers are the same thing.
Feel free to call, email, or PM us anytime with questions!
- Jeremy
Click HERE to send me a PM | Sales@jdpmotorsports.com | www.jdpmotorsports.com | JDP Facebook | 888.308.6007
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Thread Starter
Instructor
Joined: Sep 2010
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From: Leavenworth Somewhere over the Rainbow
Thread Starter
Instructor
Joined: Sep 2010
Posts: 128
Likes: 0
From: Leavenworth Somewhere over the Rainbow
The ATI is a really nice piece; we use it or Innovators West (for the bling) in most of our builds. Though the price may be a little higher, you get what you pay for in this instance in my opinion.
We underdrive most naturally aspirated Vettes we build, and usually don't have a problem, but we usually don't go over 12% underdriven. 25% under is way too far, and problems often occur at this level.
Though I don't have documentation to prove it, I'm pretty sure the SLP and PowerBond balancers are the same thing.
Feel free to call, email, or PM us anytime with questions!
- Jeremy
Click HERE to send me a PM | Sales@jdpmotorsports.com | www.jdpmotorsports.com | JDP Facebook | 888.308.6007
We underdrive most naturally aspirated Vettes we build, and usually don't have a problem, but we usually don't go over 12% underdriven. 25% under is way too far, and problems often occur at this level.
Though I don't have documentation to prove it, I'm pretty sure the SLP and PowerBond balancers are the same thing.
Feel free to call, email, or PM us anytime with questions!
- Jeremy
Click HERE to send me a PM | Sales@jdpmotorsports.com | www.jdpmotorsports.com | JDP Facebook | 888.308.6007
"AlohaC5" Senior Member
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From: Madison, AL
Team Owner
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From: Far NW 'burbs of Chicago
St. Jude Donor '13
Not to be a killjoy, but if you participate in NCCC speed events like autocross, they require you to run the stock HB. Bummer.
Since there is no performance advantage to the aftermarket HBs, I don't thinks it's really cheating, but rule book geeks would disagree.
Sorry.
Perhaps a careful repaint job before installation...???
Since there is no performance advantage to the aftermarket HBs, I don't thinks it's really cheating, but rule book geeks would disagree.
Sorry.
Perhaps a careful repaint job before installation...???
Thread Starter
Instructor
Joined: Sep 2010
Posts: 128
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From: Leavenworth Somewhere over the Rainbow
Not to be a killjoy, but if you participate in NCCC speed events like autocross, they require you to run the stock HB. Bummer.
Since there is no performance advantage to the aftermarket HBs, I don't thinks it's really cheating, but rule book geeks would disagree.
Sorry.
Perhaps a careful repaint job before installation...???
Since there is no performance advantage to the aftermarket HBs, I don't thinks it's really cheating, but rule book geeks would disagree.
Sorry.
Perhaps a careful repaint job before installation...???
I've heard that I'm taking a big risk going with another OEM replacement balancer. I'm going to go ahead with the ATI. After I get this fixed I'll install the headers and the Vararam I ordered awhile back and get it all tuned.
Team Owner
Joined: Sep 2000
Posts: 25,009
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From: Far NW 'burbs of Chicago
St. Jude Donor '13
With that combo, you would be in some kind of modified class and the HB won't matter.
My previous post was not quite correct, you must use the factory HB to run in the Stock classes. AFAIK, Modified can use any HB.
My previous post was not quite correct, you must use the factory HB to run in the Stock classes. AFAIK, Modified can use any HB.
Thread Starter
Instructor
Joined: Sep 2010
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From: Leavenworth Somewhere over the Rainbow
Looking on different websites, I'm wondering if I need ATI 917246 or 917266? One is steel and the other appears to be a mix. Does anyone know if I will need different belts for this too, or will the stock ones fit?
Le Mans Master
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From: Chino CA
Instructor
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From: Cypress Texas
Thread Starter
Instructor
Joined: Sep 2010
Posts: 128
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From: Leavenworth Somewhere over the Rainbow
So I ordered the ATI and it appears that it doesn't come with a crank bolt. Would an OEM crank bolt work with the ATI as a replacement for the old one? If not, any recommendations?
I may get the seal replaced at the same time. I'll see what the mechanic says.
I appreciate everybody's input on this so far. I really had no idea how much there was to do with replacing one.
I may get the seal replaced at the same time. I'll see what the mechanic says.
I appreciate everybody's input on this so far. I really had no idea how much there was to do with replacing one.
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I've been around a lot of motor builds....modifying and such....and have never seen any "residual" problems that could be called regular from an under-drive system. The slight difference in pulley speed shouldn't effect any accessory in a negative way....unless of course that particular accessory is faulty to begin with.