broken bolt...grrrr

ChrisBushell · 13-Jun-2013, 08:26

If you have got any of the stud showing, then a stud extractor and a lot of heat prior to trying to turn it may work.

Safest bet is remove barrel/head (2/4 stroke option) and give to an engineering shop. They will remove on a mill, using an end mill that wont wander like a normal drill.

Bad news is if you use an Eziout and it snaps of (the small ones are very brittle) then the only way to get it out is with spark erosion.

I learn't these lessons the hard way!

Chris

dunlop0_1 · 13-Jun-2013, 13:24

Also of you do not have access to a helicoil etc.

Drill the old stud out M7
Drill the hole to 8.5
Tap the hole to M10 with a taper tap only
File an M10 bolt to a blunt point.
With thread lock screw the bolt in tight
Cut the bolt off at face level
Drill and tap the new bolt to M7

Bit long winded but really does work if you have a limited budget or access to tools.

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