Harmonic Balancer
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2004-2007 Cadillac CTS-V General Discussion Discussion, Harmonic Balancer in Cadillac CTS-V Series Forum - 2004 - 2007; Harmonic Balancer walked back and starting rubbing on the engine. I have found some good write-ups on the forums containing ...
  1. #1
    gruvent is offline Cadillac Owners Member
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    Harmonic Balancer

    Harmonic Balancer walked back and starting rubbing on the engine. I have found some good write-ups on the forums containing replacement tips. Here is my question: Is the ATI Super Damper still the way to go? If so, any recommendations on who has the best deal on this part?

    Thanks

    Pully5.jpg

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  3. #2
    ctsv247 is offline Cadillac Owners Enthusiast
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    Re: Harmonic Balancer

    Check ion the performance section eBay had ati Blems right now.

  4. #3
    kyle242gt's Avatar
    kyle242gt is offline Cadillac Owners Member
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    Re: Harmonic Balancer

    There's a few threads on this on LS1tech - some of us got the wrong bolts with our ATI blems - they sent the right ones out, but better to find out before the car's in pieces.

  5. #4
    gruvent is offline Cadillac Owners Member
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    Re: Harmonic Balancer

    What's the correct part number for the LS2? I thought the 10% underdrive was ATI 917278. But I don't see that on ebay.

  6. #5
    Chris Cornett is offline Cadillac Owners Fanatic
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    Just got my blemished balancer just wondering if there is a way to know if the bolts are correct without having the car apart?

  7. #6
    jclayc's Avatar
    jclayc is offline Cadillac Owners Fanatic
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    Re: Harmonic Balancer

    there should be 9 bolts: 6 short, 3 long. the short ones should be 3/8 and thread into the balancer and hub. The long ones should be 5/16 and pass through the balancer and hub and thread into three of the six holes in the AC pulley.

    To install, I loosely assembled the balancer, hub and AC pulley off the car, then popped it in the oven at 200 degrees for like 10 minutes to expand it a bit. that allowed it to slip onto the crank a little bit so I could get my CO Speed tool started on it and tightened down a fair amount. I then torqued the 9 bolts according to the specs printed on the front of the balancer. Finally, I used the factory bolt to torque to 240-245 ft lbs (I think it was), removed the factory bolt, and then lubed up and torqued the ARP bolt to 235 ft lbs (which were the specs given with the bolt)

    BTW, OTC 6667 Harmonic Balancer Puller is the puller I used and it worked fine.

  8. #7
    ctsv247 is offline Cadillac Owners Enthusiast
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    Re: Harmonic Balancer

    Quote Originally Posted by jclayc View Post
    there should be 9 bolts: 6 short, 3 long. the short ones should be 3/8 and thread into the balancer and hub. The long ones should be 5/16 and pass through the balancer and hub and thread into three of the six holes in the AC pulley.

    To install, I loosely assembled the balancer, hub and AC pulley off the car, then popped it in the oven at 200 degrees for like 10 minutes to expand it a bit. that allowed it to slip onto the crank a little bit so I could get my CO Speed tool started on it and tightened down a fair amount. I then torqued the 9 bolts according to the specs printed on the front of the balancer. Finally, I used the factory bolt to torque to 240-245 ft lbs (I think it was), removed the factory bolt, and then lubed up and torqued the ARP bolt to 235 ft lbs (which were the specs given with the bolt)

    BTW, OTC 6667 Harmonic Balancer Puller is the puller I used and it worked fine.
    good info...thanks for posting!

  9. #8
    gruvent is offline Cadillac Owners Member
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    Re: Harmonic Balancer

    I am installing this ATI dampener tonight. (First time messing with an ATI dampener). Question, Do you assemble the whole thing first then put it in the oven? It appears that the bolts that hold on the AC Pulley go thru the entire dampener. So there would be no way to install the AC pulley without putting the whole thing together before the oven? (From user jclayc It appears you put the whole thing assembled into the oven). Just wanted to make sure b4 I screw up a $400 part.

  10. #9
    jclayc's Avatar
    jclayc is offline Cadillac Owners Fanatic
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    Re: Harmonic Balancer

    I put the three parts, loosely assembled, in the oven together. You could probably skip the oven step if you have an installer tool (or just a longer than stock bolt to get things started).

  11. #10
    lollygagger8's Avatar
    lollygagger8 is offline Cadillac Owners Connoisseur
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    Re: Harmonic Balancer

    The longer bolt:
    Fastenal Bolt (for balancer install) #40768 (M16 -2.0 pitch x 120mm long)

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