| Recommended with most ProCharger kits
Serpentine Series Super Damper Applications
The ATI Serpentine Super Damper contains grooves for serpentine belts machined into the outer damper shell. The dampers come standard with 6 outer grooves for standard OEM drive systems. 8 & 10 grooves are available for supercharger or turbo applications.
We currently have dampers for the Ecotec, LS1, LS7, LT1 and LT4 GM engines, Ford modular 4.6 engine, and the Toyota JZ80 and 4YE engines. Double serpentine pulleys dampers are also available for 1998 and later F or Y body, LS-1 equipped vehicles with A/C
The dampers are available in OEM 7.5" diameter, 6.75" diameter for 10% under-drive on accessories, and 5.5" outer shell diameters. Crank hubs may be fitted with a 6 groove serpentine pulley to drive external oil pumps or vehicle accessories at 60% crank speed.
The Serpentine Series dampers fit all ATI GM-front crank hubs and can be adapted to many engine combinations providing maximum flexibility. The dampers are available in steel or lightweight hard-coated aluminum and come with laser engraved 360° timing marks. Exceeds SFI 18.1 specs.
Installation
Tools needed:
- Damper installation tool
- Torx T-40 Plus bit
- Torx T-45 Plus bit
- 3/8" 12pt socket
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If you are installing one of the following dampers:
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| P/N: 917060 |
P/N: 917062 |
P/N: 917080 |
P/N: 917740 |
P/N: 917780 |
| P/N: 917781 |
P/N: 917788 |
P/N: 918598 |
P/N: 918599 |
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DO NOT disassemble the damper for installation. Install as a complete damper!
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Assembling the damper to the hub:
NOTE: The hub to damper fit is held to an extremely close tolerance!
1. Align the indent dimples on the hub and damper. The indent dimple on the damper is marked by the offset hole arrow on the damper decal.
2. Start three 12-point bolts in front of the damper in the three holes that are not countersunk. Use 242 Loctite (blue). Do not pull down tight on the damper!
3. Start the six (6) countersunk flathead screws in the remaining six holes. Use Loctite 242 on these six screws. Draw the damper assembly onto the hub evenly. Torque the 3 12-point screws to 30 ft./lbs. They must be installed and torqued even if no pulleys are used.
4. Torque the 6 flathead screws to 16 ft./lbs.
5. For 5 1/2" dampers, the six 1/4-20/28 bolts must be torqued to 120 in/lbs and Loctite used.
Installing the Damper and Hub assembly to the crankshaft:
1. Inspect your crankshaft for burrs, nicks and imperfections and file them down.
2. Stone or file a slight radius on end of the crankshaft snout to break the sharp edge.
3. Inspect your key and replace if necessary.
4. Apply anti-seize lubricant on the crankshaft before hub installation.
5. Press the Damper & Hub assembly onto the crankshaft. If you wish to install the hub onto the crankshaft first, use the proper puller installer.
6 . Install the crank bolt and torque to the manufacturer's specifications. Longer bolts used to retain drive mandrels stretch when they get hot and should not be used.
7. Set the damper to desired timing position. The zero timing mark is keyed exactly as the OEM part.
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