Corroded exhaust manifold studs - easily replaceable??
 

Hi folks, hoping to follow the advice of the good folks on this forum and put unequal length manifold on our impreza classic sport.

I have had a look at the exisiting manifold and its in good shape but the studs are toast, one whiff of a spanner and they will dissolve..see pics below.

So, are these doable without resorting to helicoils and machine shops and all that, or should I leave my well attached manifold alone?? Surprised there is nothing on a search about this..cheers!

Attachment 68690

Attachment 68691

Chap a smaller 6 point socket on them, usually the full stud comes out, easy to replace with new studs and nuts, run the engine for a few min to get a bit heat in them.
Jay

That should be easy enough to sort, Get the nuts off and use a good quality stud extractor.

Thanks fellers, I feel a bit braver about it now.. Any suggestions for the best source for replacement studs?

hopefully you wont strip the thread in the aluminium head. Not had this happen on a scoob, but on my old saab i stripped 3 threads out (also an alu head).

To keep cost down any M10x1.25 thread bolt long enough & cut the head off to make your own studs.