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Help with ATI damper

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Old Dec 14, 2005 | 09:32 PM
  #1  
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From: Tinker till it blows... then back it off a notch, maybe!!
St. Jude Donor '08
Default Help with ATI damper

I just received my ATI damper with aluminum shell.

Firstly for all those stating that the alu shell is too light, it weighs more than the stock damper (between 1 and 1 1/2 lbs. more)

My problem with it is that the hub is too long, so that the front pulley sits almost 1/2" further forward than the OEM.

I wonder if they sent me the wrong hub.

Hub is pn 6032 (steel)
ac pulley is 6734
Alu. shell is supposedly 7074 CS (on packing slip, but stamped on the shell is 916601 (maybe serial number?)

The kit is a 917266

Anyone have problems like this?

OEM damper is off 01 C5 6 speed.
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Old Dec 15, 2005 | 12:09 AM
  #2  
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0Tony Mamo @ AFR
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I used an ATI dampener on the 383 I just finished recently. Didn't have any problems similar to what you described. Mine came in essentially three pieces and had to be bolted together (hub, rear pulley, front main assembly). Perhaps something isnt lined up properly, rear pulley backwards causing a problem....just shooting in the dark here. Obviously you might have gotten the wrong parts. I would call ATI tomorrow....speak with JC....Super sharp guy. He will get it straightened out for you I'm sure.

Good Luck....Let us know how you make out.

Tony M.
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Old Dec 15, 2005 | 12:44 AM
  #3  
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Originally Posted by RJW
I just received my ATI damper with aluminum shell.

Firstly for all those stating that the alu shell is too light, it weighs more than the stock damper (between 1 and 1 1/2 lbs. more)

My problem with it is that the hub is too long, so that the front pulley sits almost 1/2" further forward than the OEM.

I wonder if they sent me the wrong hub.

Hub is pn 6032 (steel)
ac pulley is 6734
Alu. shell is supposedly 7074 CS (on packing slip, but stamped on the shell is 916601 (maybe serial number?)

The kit is a 917266

Anyone have problems like this?

OEM damper is off 01 C5 6 speed.
Part number is right. i jsut installed that same dampner on my 97 c5. You may have it bolted together wrong, the long side of the snout should go into the motor and seal up against the front cover oil seal.
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Old Dec 15, 2005 | 06:26 AM
  #4  
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I found the A/C pulley was easy to reverse and that the assembly should be done off the car the first time to understand how it went together. I agree, sounds like maybe it has been put together incorrectly. Which pulley doesn't line up, the A/C?

Also, did you need to hone it per the instructions?
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Old Dec 15, 2005 | 09:41 AM
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The AC pulley can be put on backwards so that it won't line up right, the damper has to be removed and the pulley reversed. I made the same mistake. No honing was needed.
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Old Dec 15, 2005 | 11:06 AM
  #6  
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From: Tinker till it blows... then back it off a notch, maybe!!
St. Jude Donor '08
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My local supplier swapped out the hub and now everything is Ok

Installation seems to be AC pulley with its hub facing front, followed by steel hub and then shell.

I haven't checked the new hub as far as fit goes. Instructions call for around .0008" press fit. (Glad I didn't hone the other hub )

Thanks Everyone

I thought that I was missing something...
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Old Dec 15, 2005 | 12:01 PM
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Mine came out perfect without honing, 0.0009 interference. I also pinned the crank with their kit while I was in there
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Old Dec 15, 2005 | 12:08 PM
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From: Tinker till it blows... then back it off a notch, maybe!!
St. Jude Donor '08
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Originally Posted by vettenuts
Mine came out perfect without honing, 0.0009 interference. I also pinned the crank with their kit while I was in there
The crank is on the bench, so it will get a keyway.
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