Thanks buds. I'm curious about that too. I was looking around but can't find the installed measurement of the original lower mounts either (if anyone knows and can post measurements / pics, that'd be grrreeeeeaaaat). I wanted that to determine the universal installed height. I know the originals are around 7/8" uncompressed, but there's no real physical "stop" to keep them from being crushed smaller...hence the sinking to the frame when they get bad. I was thinking that that may be the reason a lot of people recommend the "1 or 2" threads on the lock nuts, to keep the mounts from any more pressure (or to increase the rebound with less clamping force)...i dunno.
I have two 1/2" ID x about 1/8" thick washers on the top of the upper bushing. They push the top bushing down below the stop of the center steel bushing. It seems to only crush the upper bushing more and not affect the lower height much, if at all. The bolt is cranked all the way down to the shank also. As they are right now, they're probably as tight as they can get. That should give me a lot of release space if I feel i need to loosen them up. I stood on the cradle to see if they would sink. They didn't budge much with 170 lbs on them, figure the ~120 lbs motor shouldn't move them at all.
edit: I notice that my snubber spacing is at least 1/4" too high. I don't believe my frame or bars to be bent and I think the snubbers are original parts (another measurement for snubber thickness needed?). I think the snubber-frame spacing is supposed to be .06-.12". I might have twice that.
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