Top washer on front Motor Mount - proper orientation question

[AbingdonNerd]

Does the washer sit with the concave side facing the rubber mount (as I found it) or does the concave side face upwards towards the bolt (see cross section drawing)?

I’ve read some posts about this but wasn’t sure.

I also wondered if anyone supplies the shouldered/flanged washer that sits above the lower bushing. This is missing on my current project - I just have the flat washer that rests against the bottom of the lower bushing and is held in place by the sleeve nut.

One last question, how tight should the bolt and sleeve nut be? I know there needs to be some give in the bushings in order to absorb the engine vibrations- and isolate these from the chassis frame.

Thanks in advance for any assistance,

Jeff

[Will]

Definitely concave up. If the other way it will bite into the rubber.
Regarding how tight, I found that if the sleeve nut was tightened enough to get the lock nut on, the whole assembly was too compressed and therefor would not function. The manual warns about this. I used Loctite on the sleeve nut and did not bother with the lock nut.
I would think FTFU has the sleeve nuts.

[Steve Simmons]

Agreed on the washer, concave side up. I set the assembly snug but not super tight. It needs to prevent significant movement but the tighter you go, the less vibration will be absorbed.

[Duncan M]

The metal shoulder washer (that the factory included) to protect the lower rubber piece makes perfect sense from an engineering standpoint. It keeps the plate from digging into the rubber. There is no resaon for it to be excluded on overpriced repop parts. Negligence, really. Few people seem to care about inferior replacement parts.

I fabricated my own rebound rubbers and re-used the original shoulder washers, which were still in excellent condition.

Early flip phone pic below-