This is how ATI was sizing E46 dampers as of a few months ago:
Originally Posted by mspiegle
I believe one of the threads made a reference to a HP limit for this unit at around 500hp. Is this something to be worried about if you want to make more power than that?
Ricky said a 5.5" damper was good for up to about 500-550 hp.
He said a 6 7/8" one like Adam's would be good for 1000+hp.
He and another sales rep, Chris, were very focussed on max hp determining the damper size.*
RPMwise they had three types of tuned rubber they'd mix and match for the 'inertia ring' depending on the redline and the typical RPM range the damper would experience.
*not saying it's the best way - it's just the approach I saw in action
but fondly remembered...
Technique Tuning Stage 1 Turbo w/ Greddy Profec B Spec II | 3.07 Quaife
ATI Super Damper | Vaio Oil Pump | VAC Pan Baffle | SRE Organic Clutch
Turner Reinforcements | SPC Camber Arms | Powerflex FCABs & SFBs
Turbo Driveability Video
Horsepower vs. Torque
Last edited by McSpeed; 06-10-2010 at 03:54 PM.