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broken cylinder head stud
#14
If put the head on as a guide spot the end of the stud with the largest drill that will go down the hole.This will give you a centre.then drill down through with say a 5 mm drill ,if you have a helper get them to "eye up" that you a still drilling square.
Check that the drilling you have made looks central,if so ,with or without the head on drill out to 6.8mm.
If the hole is true you should have reduced the stud to a spiral down the hole.
With a plug tap try to pick up the existing thread,this is where it gets tricky,sometimes I've used a tiny chisel to pick up the start.You have to be really careful,bit at a time.
If all else fails providing you don't break the tap in it,you can helicoil it back to size
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Messages In This Thread
broken cylinder head stud - by ollie cox - 11-11-2017, 12:47 AM
RE: broken cylinder head stud - by Bob Culver - 11-11-2017, 01:50 AM
RE: broken cylinder head stud - by Charles P - 11-11-2017, 09:03 AM
RE: broken cylinder head stud - by Robert Leigh - 11-11-2017, 11:16 AM
RE: broken cylinder head stud - by John Raeburn - 11-11-2017, 09:34 AM
RE: broken cylinder head stud - by Chris KC - 11-11-2017, 11:18 AM
RE: broken cylinder head stud - by AustinWood - 11-11-2017, 01:58 PM
RE: broken cylinder head stud - by Chris KC - 13-11-2017, 06:42 PM
RE: broken cylinder head stud - by James Anderson - 11-11-2017, 05:31 PM
RE: broken cylinder head stud - by Jeff Taylor - 11-11-2017, 06:37 PM
RE: broken cylinder head stud - by James Anderson - 13-11-2017, 04:55 PM
RE: broken cylinder head stud - by GK5268 - 11-11-2017, 07:20 PM
RE: broken cylinder head stud - by Colin Wilks - 12-11-2017, 10:37 AM
RE: broken cylinder head stud - by Charles P - 12-11-2017, 11:15 AM
RE: broken cylinder head stud - by ollie cox - 12-11-2017, 01:02 PM
RE: broken cylinder head stud - by Austin in the Shed - 12-11-2017, 02:37 PM
RE: broken cylinder head stud - by AustinWood - 12-11-2017, 03:03 PM
RE: broken cylinder head stud - by Adrian Payne - 13-11-2017, 01:49 PM
RE: broken cylinder head stud - by Burky - 18-11-2017, 09:38 AM
RE: broken cylinder head stud - by Bob Culver - 18-11-2017, 09:12 PM
RE: broken cylinder head stud - by Burky - 18-11-2017, 10:35 PM
RE: broken cylinder head stud - by orbiter418 - 18-11-2017, 10:52 PM
RE: broken cylinder head stud - by Burky - 19-11-2017, 10:32 AM

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