ORIGINAL: shd3920
I measured the distance and I need 1 1/4" long spacers X I figure about 1/2" diameter. And M3 bolts about 1 1/2" - 1 3/4" long. And my motor mount has 4 mounting holes.
No do not use tubing type standoffs a half inch diameter. Yes of course since your mount is a four bolt type you would use four stand offs but they only need to be of sufficient diameter to allow the bolt pass through. Agine they can be made of almost any rigid type tubing. that your bolts, what maybe #6 will just pass through.
John