Originally Posted by SuperTuner12010
Is the stud pressed into the block or is it threaded? What is the easyest/best way to remove it without damage?
It's just threaded in.
If you don't care about damaging the pipe itself, you can unscrew it with vise-grips or a pipe wrench.
If you wish to preserve the pipe (eg: you're going to sell it, along with the cooler, as an upgrade to a 1.6 owner), then use the "double-nut" method:
Remove the nut holding down the factory oil cooler, and then the cooler itself.
Re-install the nut onto the pipe, and thread it down about halfway.
Install an oil filter onto the pipe (one you don't care about) and thread it down about a half-inch or so. Enough that you have full engagement of the threads.
Now run the nut back up against the oil filter. Using an oil filter wrench to hold the filter still, put an open-end wrench onto the nut and tighten it to the filter.
Once the two are locked together, you can use your open-end wrench on the nut in the "unscrewing" direction, and it should cause the pipe to unscrew out of the block.
To separate the nut from the filter and get the filter back off the pipe, just use the filter wrench and open-end wrench in the reverse direction.
If you already have a second nut which fits the pipe (such as from your new kit) then you can use it in place of an oil filter as the "other" nut.