Nipples

[totta Crolla]

Now I've got your attention...
I have a problem with a rear caliper bleed nipple (screw) I know it just wants to break off before it unscrews. I have soaked it for ages in penetrating oil but still no joy.
There is no fluid in the system as I have just fitted new pipes so heating it is not a problem, I'm even considering mig welding something to it basically to get plenty of heat. What does everyone think ?
I have a rally imminent and can't afford the time to break it off inside
Thanks

[koh]

i would go for heat,a few times what weve done is get the nipple real hot then spray some wd40 on it,breaks the seal in the thread

not 100% guaranteed to work but 9 out of 10 its worked

[totta Crolla]

I only have a rather large canister type blowtorch, do you think it would work or should I break out the welding gear ?

[koh]

i use a blowtorch, i think welding might distort the thread,then its had it and needs drilling and re tapping

[totta Crolla]

Had a go at it this evening, blowtorch and WD40 and it gave in
a bit scary though, for all the world it looked like snapping off.
Thanks for all advice offered

[koh]

excellent

[Eric]

now put some copper grease on it before re-installing it!