Exhaust header stud broken.

[Edmund]

Has anybody any idea on the length of these studs? as ive lost one. the previous owner did a botch job before so im going to try and drill out existing which I believe is 6mm. But i don’t want to drill to far any input would be gratefully received. Thanks Edmund.

[martin]

I know late reply, If you encounter this problem again, very slow drill speed, the stud has hardened,make your drill sizes small and make gentle size up scale, untill you reach your desired size,then back your drill out,
win or no win. were you succ…did it work ? slow drill speed !!!

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