I'm trying to get exhaust manifold bolts out, I've sprayed them with pb blaster for 2 weeks and welded a nut on the bolts but they keep breaking off, any ideas other than drilling them out?
Thanks
Thanks
Do not I repeat do not try to use a bolt extractor.
Everytime I have tried to use one of those they beak off in the head. Once this has happened good luck trying to drill it out. The extractors are much harder than the original bolt and head and harder than most drill bits.
you are better off just drilling it out and retapping it.
What do you mean by harden bolts?
Thanks
Probably grade 5 or grade 8 bolts for higher strength.
Do not I repeat do not try to use a bolt extractor.
Everytime I have tried to use one of those they beak off in the head. Once this has happened good luck trying to drill it out. The extractors are much harder than the original bolt and head and harder than most drill bits.
you are better off just drilling it out and retapping it.
There is way too much taper in an extractor for that to work. Plus with my luck I would be in the water jacket for sure