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VStar650CL »
https://forums.nicoclub.com/vstar650cl-u299034.html
Tue May 14, 2024 4:23 am
Play in motor mounts is a little hard to describe in numbers because it's rotational on three axes. I.e., a bad transmission mount will primarily let the engine rotate on a flat plane around the nose mount and may let it bounce end-to-end, while a bad dogbone mount will primarily let it rotate on the axis of the crankshaft. The sum of all those movements becomes pretty hard to characterize. For that reason, I like to define it in terms of each individual mount. I'd say 3/16" of planar movement at any individual mount is probably a good generic limit, at 1/4" or more the mount is probably shot. They're dampers, but they're not supposed to be jello. Also, the dealer is right that some superficial cracking may be normal, but any "web" which is completely severed means the mount is bad.