gt750boy

[quote name='mattyc' timestamp='1300490880' post='20376757']
At work if a bolts shear off in a tapped hole I drill it out to a few mm less than the internal pitch of the bolt. You then can put a stud extractor or knock something like a screwdriver end in and wind it out. If this still doesn't work heat up what's left of the bolt as hot as you can, as it has a hole in it where you have drilled it allows the bolt to shrink when cooling. Try again and you will find it will screw out. This method preserves the tapped hole so you can fit new bolts in.



I think that would probably mess up any tempering of the steel. Yes?

AlyWW

I bought an impact driver off ebay...and ended up drilling the screws out anyway when the impact driver didn't work. After the experience, I should have spent the money on a couple of decent new, sharp dril bits. None of the disks on my car have the fixing screws.

razzele

Have you got the impact driver set to loosen ?

Croc

my mechanic has a special metal stick with tough screw driver head on its tip - he puts it into the screw and than heats on it with a hummer few times.
it released those screws very easily.

mr-pitts

Ive put a BBK kit on my car and have removed every screw with a Hammer and Dot punch,I dont even try any other tools,it doesnt fail.

stu_c

All sorted I drilled out the old screws and just replaced then with genuine Honda ones :-)