Originally posted by poncho62
Bolts broken off in aluminum always seems to be harder to remove, due to the reactionj between the 2 different metals. Put lots of penetration oil in there to kill this reaction.
steel bolt stuck in aluminum can be removed chemically I think the chemical is Alum and you build a damp to hold the fluid and soak for several day in alum I believe it can be gotten at some drug stores. It will eat the seat and not the aluminum. This is from what I wrote have not done it mayself, may want to do a search on the alum. Ed ke6bnl