yes, they are no fun, when old.
heat it up and try. glove on hands , incase you slip. (leather gloves)
jog it back and forth.
use a real 02 socket drive. for max purchase and force. hex deep wall or hex crow foots.
id wreck the 02 ,before the manifold. but doorman make a cheap 8v manifold. $79 . in like the 16v $300+
one other trick
is hit it with a torch, turn it off and PB it, and let the cooling action, suck in the PB.
as it cools the threads get a micro vacuum there... sucking it in. sometimes.... if lucky.
lots of patience... you will win !
ive even cut the o2 flush at top of hex.
then drilled the guts out until the thread shell is like 1/16" thick or 1/8" to less.
then its very weak thread shell.
then as i unbolt it ,the threads collapse, and it comes out and i use a thread chaser to clean man. treads.
last resort... "last chance garage" lol.
heat it up and try. glove on hands , incase you slip. (leather gloves)
jog it back and forth.
use a real 02 socket drive. for max purchase and force. hex deep wall or hex crow foots.
id wreck the 02 ,before the manifold. but doorman make a cheap 8v manifold. $79 . in like the 16v $300+
one other trick
is hit it with a torch, turn it off and PB it, and let the cooling action, suck in the PB.
as it cools the threads get a micro vacuum there... sucking it in. sometimes.... if lucky.
lots of patience... you will win !
ive even cut the o2 flush at top of hex.
then drilled the guts out until the thread shell is like 1/16" thick or 1/8" to less.
then its very weak thread shell.
then as i unbolt it ,the threads collapse, and it comes out and i use a thread chaser to clean man. treads.
last resort... "last chance garage" lol.
http://www.fixkick.com