My understanding of the point of bushings is that the goal is to avoid metal-to-metal contact of same-kind metals. (e.g. in 1/1 scale car engines, brass bushings between steel moving parts is typical.)
So if I use
Lunsford 7311 "quick tune" Titanium Shock Mounts:
Associated 1598 blue aluminum shock tops:
then is it a bad idea to use the
Associated 1780 blue aluminum bushings?:
I could stick with the standard
Associated 6473 plastic bushings:
but I was hoping to use delrin rather than plastic bushings.
The solution I'm thinking of is:
RPM 70181 Delrin Pivot Balls
which have the right I.D. for the Lunsford 7311 but the O.D. of the balls is too large to fit in the shock tops. My plan is to ream out the I.D. on the shock top to fit the O.D. of the RPM balls, allowing just enough slop for free movement.