This jig is necessary for drilling out broken exhaust studs on Silver Cloud 6-cylilnder cars with 1/4"-28 UNF screws. This jig is installed on 3 existing studs using the the black guides and included nuts, then use the 4th black guide to locate and drill the broken stud flush with the included 1/4" drill. Replace the black guide with the gold guide and drill the broken stud through with the included .213" tap drill.
The jig should be removed and the hole should be cleaned and inspected. The existing thread may be able to be pulled out with pliers. If not, the jig can be re-installed and the hole retapped through a black guide using the included 1/4'-28 UNF tap.
This jig is based on the design by Norman Geeson as posted on KDA132.com. His instructions will be included with purchase.
SC 6-Clyinder Broken Exhaust Stud Removal Jig
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All British Tool Works tools are guaranteed for life. No receipt necessary. We will be astonished if one fails and we will ask plenty of questions, but it will be replaced post-haste or a refund given - your choice. But honestly, that's not gonna happen.