Topic: Broken bolts in original mufflers. Now what?

[remcoseegers]

Does somebody know the best solution for this? I don't know if this is somehow welded at the inside or that I can get them out making it hot. Thanks! By the way, 500 Four K0/1/2 muffler.

[bryanj]

Were they not welded in studs originally?

[remcoseegers]

Were they not welded in studs originally?

What do yo mean? I can also just weld the brackets on but that is rather dirty... I don't know if these are broke bolts or broken studs. And, in case of studs, should I be able to get them out by heating and welding something on the studs to turn carefully?

[bryanj]

What i meant was i think they are originally studs but welded to the bracket and not sctewed in. You could just drill out the bits and welf in new studdedbar

[remcoseegers]

Ok thanks. Looking around for images I find them all with studs. The only thing I hope is these were just bolted in without any welding from the inside. I will try to get one out. If impossible I put the bracket on and weld it on the bit.

[remcoseegers]

Well, impossible to get them out. All welded from the inside. I managed to drill the 7.5mm hole and made some M8 inside. I guess some copper welding around the inserted stud should do the job. I hope.

[pjlogue]

I think I would try to drill out and re-tap or use Helicoils.  This is providing you can get a bolt lined up from the back side without frame/etc obstructing it.  Trying to weld a stud will probably screw up the chrome finish.

-P.

[remcoseegers]

Finally I drilled them out with 4,5mm and tapped M6 inside. When drilling out bigger there is no "flesh" left for tap. The M6 worked very well and I don´t think they will fall off :-)