Harmonic options
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
Harmonic options
need a little info long term LT1 owners...
I purchased the ATI 917269 with a 69A hub
there is no way to install the balancer without A lifting the motor or B un-installing the rack and pinion... this is un-acceptable.. I have a lunati race crank, brand is irrelevant but as we know it's keyed... I just installed the engine and trans... who has a quality keyed non fluid balancer
that will install & remove like OE
thank you, Stuart
I purchased the ATI 917269 with a 69A hub
there is no way to install the balancer without A lifting the motor or B un-installing the rack and pinion... this is un-acceptable.. I have a lunati race crank, brand is irrelevant but as we know it's keyed... I just installed the engine and trans... who has a quality keyed non fluid balancer
that will install & remove like OE
thank you, Stuart
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
OK fellows ATI is a joke great product very poor hub fitment
has anyone tried Jeg's
http://www.jegs.com/i/JEGS-Performan...oductId=757291
balancer with this 92 - 95 hub
http://www.jegs.com/i/JEGS-Performan...oductId=757291
appears to be very close to OE hub fitment
has anyone tried Jeg's
http://www.jegs.com/i/JEGS-Performan...oductId=757291
balancer with this 92 - 95 hub
http://www.jegs.com/i/JEGS-Performan...oductId=757291
appears to be very close to OE hub fitment
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,002
From: Texas
Why is the hub fitment poor? ATI states pretty clearly that their hub needs a final hone to fit on the crank.
It's been very well documented on this forum and others that you can't install the ATI balancer with the engine in the car.
I'll admit I'm curious....why install the engine before installing the hub and balancer? The nice thing about the C4 is that you can install the engine fully dressed, including the intake, headers, ps reservoir, plug wires, tensioner, AIR system if you retained it, etc.
It's been very well documented on this forum and others that you can't install the ATI balancer with the engine in the car.
I'll admit I'm curious....why install the engine before installing the hub and balancer? The nice thing about the C4 is that you can install the engine fully dressed, including the intake, headers, ps reservoir, plug wires, tensioner, AIR system if you retained it, etc.
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
Why is the hub fitment poor? ATI states pretty clearly that their hub needs a final hone to fit on the crank.
It's been very well documented on this forum and others that you can't install the ATI balancer with the engine in the car.
I'll admit I'm curious....why install the engine before installing the hub and balancer? The nice thing about the C4 is that you can install the engine fully dressed, including the intake, headers, ps reservoir, plug wires, tensioner, AIR system if you retained it, etc.
It's been very well documented on this forum and others that you can't install the ATI balancer with the engine in the car.
I'll admit I'm curious....why install the engine before installing the hub and balancer? The nice thing about the C4 is that you can install the engine fully dressed, including the intake, headers, ps reservoir, plug wires, tensioner, AIR system if you retained it, etc.
Last edited by THE 383 admiral; Sep 27, 2011 at 03:09 PM.
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Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
OK now for the ridicules. kicker. The jegs house brand balancer is 100% identical to ATI.. sold at summit.. but jegs has the correct OE billet hub... why is this ATI could not accomplish this??? with the "SUPER" damper
Le Mans Master
Joined: Mar 2001
Posts: 7,999
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From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
Cruise-In IV Veteran
St. Jude Donor '12
I bought the ATI balancer and hub from Summit as a kit.
I went from the press fit 92 crank snout to a keyed crank snout on my 383.
My mechanic installed it on the 383 before installing the engine so I don't know how it would go on with the engine in.
It does look like it fits like the stock one - IIRC it has different bolts to hold it on the ATI hub.
I went from the press fit 92 crank snout to a keyed crank snout on my 383.
My mechanic installed it on the 383 before installing the engine so I don't know how it would go on with the engine in.
It does look like it fits like the stock one - IIRC it has different bolts to hold it on the ATI hub.
Pro
Joined: Aug 2009
Posts: 725
Likes: 4
From: Plano, TX
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
the hub is a great find... I received the 555-51606 10% balancer... mis-drilled holes can only use 2... next it will not line up with the rest of the pulleys.. to short around .500
unless ATI really hosed this part... is there anyone anymore?? that makes parts or does a job that I do not have to fix or modify
unless ATI really hosed this part... is there anyone anymore?? that makes parts or does a job that I do not have to fix or modify
Pro
Joined: Aug 2009
Posts: 725
Likes: 4
From: Plano, TX
the hub is a great find... I received the 555-51606 10% balancer... mis-drilled holes can only use 2... next it will not line up with the rest of the pulleys.. to short around .500
unless ATI really hosed this part... is there anyone anymore?? that makes parts or does a job that I do not have to fix or modify
unless ATI really hosed this part... is there anyone anymore?? that makes parts or does a job that I do not have to fix or modify
I'll bet the balancer is for an F body. It looks alot like my old firebirds balancer. Do you think that billet hub will work with a stock corvette balancer?
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
100% for now I'm using my stock balancer, with the billet hub.. till a vender gets there yard stick calibrated..
Tada no engine lifting or removing rack. just had to drill a pilot hole.. the hub has a roll pin
Tada no engine lifting or removing rack. just had to drill a pilot hole.. the hub has a roll pin
Last edited by THE 383 admiral; Oct 1, 2011 at 11:26 PM.
Melting Slicks
Joined: Nov 2008
Posts: 2,765
Likes: 5
Removing the Rack & pinion steering unit to install your ATI Super Damper would be the easy way to do it with a 2- post car lift or a drive on 4 -post lift.
Borrow a friends shop work bay for the evening if you can.
Borrow a friends shop work bay for the evening if you can.
Pro
Joined: Aug 2009
Posts: 725
Likes: 4
From: Plano, TX
Ok. Cool. One piece of advice. Take that hub and balancer to a shop to have it balanced. They are zero balanced from the factory but with the new hub it might change balance.
Here is an ASP 22 percent underdriven option for you.
http://www.summitracing.com/parts/ASP-945800/
Here is an ASP with a separate alternater pulley
http://www.summitracing.com/parts/ASP-945803/
Here is an ASP 22 percent underdriven option for you.
http://www.summitracing.com/parts/ASP-945800/
Here is an ASP with a separate alternater pulley
http://www.summitracing.com/parts/ASP-945803/
Last edited by 93VettePilot; Oct 2, 2011 at 08:29 AM.
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
when something goes wrong... the BS begins...
Thread Starter
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
Ok. Cool. One piece of advice. Take that hub and balancer to a shop to have it balanced. They are zero balanced from the factory but with the new hub it might change balance.
Here is an ASP 22 percent underdriven option for you.
http://www.summitracing.com/parts/ASP-945800/
Here is an ASP with a separate alternater pulley
http://www.summitracing.com/parts/ASP-945803/
Here is an ASP 22 percent underdriven option for you.
http://www.summitracing.com/parts/ASP-945800/
Here is an ASP with a separate alternater pulley
http://www.summitracing.com/parts/ASP-945803/