So, I've got the same hard tail to install on my 650 frame. I want to get the frame done before winter. How confident are you that the motor mounts are going to be okay having cut the frame with the motor out?
My motor is already out (was out when I got the bike). I thought about installing the motor and cutting the frame and tacking the hard tail on along with brake stay rear fender and chain tensioner mounts and then taking it back out and taking the frame and having someone do a proper TIG weld job on the joints. But man I'd really only like to have to wrestle the engine once... it's not an easy one man job for sure friggin' thing is heavy.