Re: John's 1935 1201 Coupe for Two or Four Passengers, RHD in Tasmania

Posted by DavidM On 2018/5/10 19:37:02

John,
That drill jig looks fine as long as it takes the required drill sizes. If the drill is smaller than the hole in the jig it will not be held square. Also you need to find a way to clamp it against the face of the block. You can improvise clamps held by bolts into the adjoining threads.
If you need to resort to Heli-coils you will need a drill jig to hold the tapping drill square.