Using a stud extractor

thedukeofhunslet · Post by **thedukeofhunslet** » Thu Jan 03, 2008 1:31 pm

OK. I'm not doing this work on the boxer but so far I've come across some pretty clued up mechanics on here so here goes.

When I came off the XJR in December I sheared off a protective engine casing. It left two studs embedded in the block.

I have never used a stud extractor before and was about to send it to a garage and then thought...what the hell...for 6.99 for a extractor set from Screwfix I'll give it a go.

Using a stud extractor in an entirly capitvated thread housing looks fairly straight forward but the 6mm stud is held in with thread lock. None of the stud is protruding from the block.

Any advice for using stud extractors in light of the thread lock?

Cobbster · Post by **Cobbster** » Thu Jan 03, 2008 2:20 pm

Hi,
Go with caution mate and you cant go wrong. Stud extractors can be notoriously brittle so the worst case scenario is that you could end up with a snapped stud extractor stuck inside a snapped stud. Not good. So take your time and if the stud is threadlocked in, heat it up first to release it. Loctite turns gooey when its warmed up. A decent hair drier sometimes does the trick.

Cheers, Cobbster.

soggybottoms · Post by **soggybottoms** » Thu Jan 03, 2008 4:10 pm

freeze sprays alternated with heating should break any rust and see off the threadlock - worked for me in the past

Ade B · Post by **Ade B** » Thu Jan 03, 2008 4:56 pm

Unless you have the patience of a saint, mechanical nouse and decent tools, I'd take it to local engineering firm...

I have never had any joy with them and ended up drilling the whole caboodle out and using a bolt or helicoil but then again I have none of the above required attributes.

Having said that, its clearly possible.

Ade

Red Fokker · Post by **Red Fokker** » Thu Jan 03, 2008 6:16 pm

I may be wrong but I seem to recall an article on this very subject in this months Motorcycle and Mechanics

Boxadog 2000 · Post by **Boxadog 2000** » Thu Jan 03, 2008 6:59 pm

Carbon steel stud extractors are a complete pile of shite.

Dont even bother.

If you dont drill the pilot hole EXACTLY in the centre you are buggered.

Take it to an engineering firm.

Bob