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Registered
Join Date: May 2006
Posts: 36
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Broken Dilavar stud removal
Has anyone had any luck mig or tig welding a nut to a broken dilavar stud for removal?
If a dilavar stud breaks flush on the engine, has anyone got them out? what methods? thanks |
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06-10-2006, 04:31 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Wil:
I've had excellent luck with TIG welding a nut to the stub of a broken stud and then heating the case to back it out. If it breaks off flush with the case that results in nothing to weld to, the only way you can get it out is by EDM machining.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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06-10-2006, 05:54 PM
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Registered
Join Date: Dec 2005
Location: Mount Airy, MD
Posts: 4,299
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There is an excellent technique where you rosette weld a washer to the flush stud, then weld a nut to the washer. I have never used this technique (knock on wood - cause I have never been there) but have heard good things.
Good luck! tadd
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1967 912 with centerlocks… 10 years and still in pieces! |
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06-10-2006, 07:21 PM
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Try not, Do or Do not
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All good methods. One thing to remember is that if you weld the nut on a very short stud piece be very careful not to damage the piston spigot.
It also helps to strike the welded nut with a mallet after it is welded in place. This helps the threads to release in the case.
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Henry Schmidt SUPERTEC PERFORMANCE Ph: 760-728-3062 Email: supertec1@earthlink.net |
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06-11-2006, 11:15 AM
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Porsche
Retor 911
Scarab
Riley
