I am removing the exhaust manaifolds on my 93 vette. I can not get the nuts out of the top of the exhaust manifolds that supply the airhoses. I have soaked them but they won't budge and the nuts which are brass are starting to bend. It is a 22mm wrench which they don't have in a flair wrench size.
Anyone have any suggestions?
Since I am going to be replacing them with LT Headers could I just cut the air tubes?
Thanks
Ken

 

A very careful application of heat with an oxy-acetylene torch around the nut should do the job, try not to heat the nut, concentrate the heat on the manifold. You may be able to remove the manifold first then work on the A.I.R. tubes out of the vehicle.