Manifold Stud Bolt Removal Tool

[nighttrain]

Just thought I would post this for anyone attempting manifold replacement.
Changed all of the corroded stud bolts on my 2004 C4S, two of them snapped as expected. Used this adaptor tool and the broken studs came out with no issues at all, great tool.

[m040]

Interesting !
Can you give more info please.

[battered]

How's it work? Did you need heat?

[nighttrain]

The tool I used was purchased from a popular auction site £15 impact stud extractor 1/2".

If your bolt head is intact, heat the bolt for five minutes, I used a small blow torch and cooled with cold water using a spray bottle, if you can't get a socket on the bolt use a impact driver to try and break the seal, then try and back out the bolt using a ratchet.

If the stud breaks as two of mine did, leave it until you have completely removed the manifold. Once the manifold is out of the way I was left with 5-6 MM. of stud protruding from the block which was enough to put the jaws of the stud extractor on. Heat and cool as before, Then tighten the extractor onto the broken stud using a ratchet and spanner and back it out slowly. As it is backing out the jaws on the extractor get tighter and tighter. You will hear a slight crack sound as the stud frees itself and will then come out easily. I have added a few more pictures so you can see the sizes etc.

I did try other ways which led to much swearing tried to drill the first one out but the stud extractor was the easiest way for me.

This was preventive maintainece as I'm paning to replace the manifolds to stainless steel and now know the bolts can be removed with no issues at all.

[nighttrain]

More pictures....