Re: Exhaust Manifold - Somewhat OT

Posted by Andy Martin on September 20, 2006 at 05:28:32 from (63.123.95.201):

In Reply to: Exhaust Manifold - Somewhat OT posted by Michael Sheik on September 20, 2006 at 04:55:07:

First, try it while the engine is hot. They may be easier then.

Otherwise I soak them with a penetrating oil for a few days and then twist them off if they won't come. Then weld nuts on the studs and back them out. It works every time although I had an M recently that the stud came out hard all the way and I had to weld four different nuts on it. that is the exception, the stud was too long and had been bottomed out so the end threads were damaged.

An alternate method is to cut or split the nuts to attempt to save the studs but if the stud is about corroded into anyway you waste a lot of time getting the nut off and still have to pull the stud.

Also, I have noticed if you heat a joint red after you have penetrating oil in it you may burn the oil and make the joint tighter again. I did this on a big turnbuckle once that I had coming apart as it was cooling but I let it sit a few days and it was frozen again when I got back to it. More heat did not help and it really froze up tight.

Replies:

• Re: Exhaust Manifold - Somewhat OT Michael Sheik 05:49:18 09/20/06 (1)
  • Re: Exhaust Manifold - Somewhat OT Andy Martin 09:23:46 09/20/06 (0)

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