Originally Posted by
SuperViking
Thanks, I am looking for a nice machined mount for a YS60 and thought the OS factory mount would work for a tiporare 60 I am getting ready to build from plans.
Yes, the 905 OS mount for the FSR/SF/FX 61's and 91's won't work with the YS's. It will work with Rossi and NR though as mentioned. You could probably use it by re-drilling and re-tapping though. I think there is enough clearance between the front bolt on the YS (narrower) and the OS. The problem might be the case width which I haven't compared. They should roughly be the same width though. I actually just picked up some OS mounts today so when they arrive I'll be able to compare and check with different engines.
Not many aluminum motor mounts left out there that I'm aware of.
David