Guest rick458 Posted April 17, 2005 Share Posted April 17, 2005 I found the Manifold bolt closest to the fire wall Broken in the head, it is broken off 2 threads into the head and I plan on using a reverse drill bit, and a tap to ensure good threads SOOO exactly what thread size do I need to drill and tap it.. I thought it was a 1.25MM but that is a bit bigger than the Manifold bolts and the Drill and tap set has no M# Quote Link to comment Share on other sites More sharing options...
burntz Posted April 17, 2005 Share Posted April 17, 2005 The bolts are 8 X 1.25. To find the best bit to drill before you tap, insert different size bits into the holes of the studs you did remove and find the largest one that will fit into the hole. Be carefull and make sure that you drill exactly in the center of the broken stud. If it starts to go off to one side there is a chance you will damage the treads on the head. Stop and use a smaller bit to prevent this. Quote Link to comment Share on other sites More sharing options...
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