Removing complete exhaust

[stuntmangb]

Hi Guys
Its the 1st time I have posted on here, I live in the Uk
Could anyone give advise to remove the complete exhaust on my 111k 1987,911 .
At present it on my mates 2 post lift we have work on the left heat exchanger sheared two studs ,one nut has undone
1st we heated the nut then hammered it ,sprayed plus gas on .
Help!!!

[Flat6pac]

You need a torch that you can heat the nuts red hot then get them off hot.
Youre going to have a problem if you try to drop the whole exhaust all at one time because youre going to bind where the exhaust inserts into the heads.
Bruce

[john walker's workshop]

oxy acetylene torch, heat them red and wait until the allen head nuts go dull red before trying to remove them or you can round them out. i remove the exhaust as a complete unit most of the time. just support it so it comes down evenly.

[stuntmangb]

Thanks for your help I have removed exhaust had to cut it up,will heat studs as you guys have said will need to use a stud removal tool I bought from Frost Restorations as studs are damaged.it they break off will drill them to 6mm and use stud extractor

[porschetub]

Heat and cool with water,spray with lubricant,heat and cool again and again if needed,the expansion and contraction breaks the rust and they come undone.

[JJ 911SC]

If the stud are sticking out, use a in-line stud remover. Check post 9 & 18 of:

Broken Exhaust Stud tool- any lenders?

Take a look at this link if you end up having to do a Timesert:

Time-Serts to the rescue

[stuntmangb]

Thank for the advise all studs now removed only used 3 Helicoils.