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What I can say is that if the springs have a flat-spring damper between the coils, do NOT run ti retainers on the street. The damper will wear a groove into the retainer.


FWIW, my ti retainers had maybe 5K worth of street & strip time when I inspected them and found the damage from the dampers. Not sure how prepping the ends of the dampers would have made much difference since they're going to be rubbing up against the underside of the retainer regardless.

I just make it a rule of thumb to not use ti retainers w/ that style of spring as the result, especially because I know I'm not the only person who has experienced this. I've no problems w/ ti retainers on the street w/o flat-spring dampers and will be running new ti parts w/ the PAC springs Dwayne provided me for use w/ my .650" roller cam.