So the tensioner is mounted with 2 bolts and a stud that comes off the block which a nut goes to. The two bolts are the same: 1 1/4" - top of bolt head to end of threads 1" total shaft length 7/8" - of actual threaded or usable shaft (washers take up 1/8") 12mm bolt head 1.25mm thread pitch I THINK (I measured but still) M8 I THINK (again I measured)
The bolts have 1 standard washer and 1 lock washer which take up basically 1/8" combined. These washers cannot be removed from the bolt.
"torque gets you off the line...& hp gets you over the line." - TTKeeper