I have heard nothing but good things about these dampers in racing applications in fact they're proven on some of the fastest Aussie cars around perhaps fastest GTR's/RB's and 1fzīs, 2jzīs anywhere in the world !
some people prefer this over ati .
http://img10.imageshack.us/img10/8407/dsc0181sd.jpg
METAL JACKET Harmonic Balancers / Crank Pulley Dampers
A World First In Balancer / Damper Design !! Encased Dampener Within Balancers
Introducing a revolutionary development in torsional dampening technology. Utilising the ROSS Tuffbond original elastrometric bonding process to produce the ROSS MetaljacketŪ series harmonic balancers / crank pulley dampers.
Metaljacket Harmonic Balancers/Crank Dampers designed and manufactured by ROSS.
Metaljacket use the highest spec. 6000 series alloys along with aerospace 7075 hard anodised crankshaft hubs.
Metaljacket is designed to be used on race machines that are driven by enthusiasts on the street, strip,circuit or on the water.
The accessary drive pulley ratios are standard unless requested.
These are the worlds best used by world champions.
* 360 timing marks at 1° intervals
* Adjustable timing disc, for TDC accuracy
* Precision CNC machined 40 Tonne tensile alloy steel hub and vibration dampening ring
* Dampening ring and hub permanently bonded together on TWO axis by our exclusive Tuffbond elastrometric bonding process, ensuring maximum harmful vibrations are absorbed.
* balancer is anodized for durability and appearance
* Absorbs more damaging torsional harmonic vibrations
* Quicker engine acceleration
* Increases engine life
* Lifetime warranty, even for racing use - a world first!
* Never requires maintenance or rebuilding - ever!
* Rated to 1500 HP
* Encapsulated MetaL JacketŪ design exceeds AN DRA and SF1 i8.1(USA) requirements
* Fits standard or modified engines
* Affordably priced
From ROSS
"We can make a batch of dampeners to suit the 6G72.
We would need a sample.
Your price for 1 6G72 metal jacket dampener would be $614.25aud +
tooling & freight
x 2 dampener $583.53aud per dampener + tooling & freight
x 3 dampener $552.82aud per dampener + tooling & freight
x 4 dampener $522.22aud per dampener + tooling & freight
x 5 dampener $491.40aud per dampener + tooling & freight"
so it would be 484.5 USD if 5 or more people would buy but remember shipping from Australia might be pretty pricey ... not a bad price at all remember this damper costs up to 600 USD for most applications !
I actually prefer this damper over ATI mainly because it doesnt need maintenance or rebuilding - ever and a lifetime warranty ...