things get a bit tricky when boring a pocket for the glow plug and the plug wrench. in the 10mm, you just can't go deep enough from the top to get the plug down to the level even with the bottom of the adapter without cutting THRU into the 10mm threads and cutting the adapter in half!!!!!!! the pocket from the top can only be cut deep enough and only down far enough to leave enough material for integrity of the adapter. so you have to cut a pocket from the bottom so the plug becomes un-shrouded.

on the 14mm to 1/4'' adapters the top pocket can be machined deep enough but the pocket CAN NOT exceed 11mm or a cut thru will result!!!!!! so what i recommend is either grinding down a nut driver as noted, or using a fox 4 way wrench (thinnest i have found) and taking off material on the plug end, just enough to get down to the plug for tightening and removal. i cut mine down on my lathe.

making these little parts takes time and care in order to make them right and ones that will seal and not leak!!!!!!!


see post #455 & #463 and click on the you tube links, take note of the adapter in that engine, then P.M. me if interested.