Here is something I haven't run into before. The bolts shown are the principle motor mounts on my Swift DB-1. They insert into the bellhousing through the "cups" at the end of the "V" formed by the 3 frame tubes at the bellhousing.{you can just see a sliver of one of the bolts in the photo attached.} As you can see, the washers I used are dished out, and one has worn through. Also, the front top motor mount, where the cross bar bolts to the front of the aluminum head, was also dished out in a nice, neat hole, 1/4 inch deep or so..
My best guess is the washers failed, allowing the engine to "wallow around", resulting in the damage to the front top motor mount. However, the other mounting points seemed okay. [Can't check. Motor still at Rollin's]
I plan to use the AN washer [the new, gold one shown in the photo. It is smaller than the originals, and the center hole is marginally larger] to re-install the motor, but thought I might get other input before I did.
Anyone see anything else to explain this? Any ideas on replacemant washers?
Thanks for the input,