The left hand engine mount on the S-type version is a large bulky affair. It is mounted over the engine blocks original oil filter mounting face and so it contains oil passageways and new mounting faces to relocate both the filter and a small coolant cooled oil cooler.
Left Hand Engine Mount.
The middle (upwards pointing) face is for the small coolant cooled oil cooler. The end (downwards pointing) face is for the spin-on oil filter.
Mount removed revealing the original oil filter mounting face.
Fortunately we are in luck, the two items, as expected, are connected in series but: 1) The centre oil passage way of the original oil filter mounting face is still connected directly to the centre oil passage way on the relocated oil filter mounting face. 2) The outer oil passage way (ring) of the original oil filter mounting is connected directly to the centre oil passageway of the oil cooler mounting face. This means that the outer rings on the relocated faces on the mount are only connected to each other and so can be removed, turning the oilways within the mount into nothing more than glorified pipe extensions.
Oil filter portion cut off.
Viewed from below to reveal feed and return ports.
If you have space and wanted to retain the small oil cooler you could tidy up the cut ends, tap them and fit the unions now.
I then spent a considerable amount of time with various grinders and files (but evidently without a camera) removing the outer ring of the oil cooler mount.
The blue connector is screwed directly into the original oil cooler connection. The other connection required the passage way opening up and tapping to match the connector. It was then taken to a local engineering shop where it was welded in place.
Obviously this is just a case of buying one from the aftermarket suppliers. I did manage to find this tidy all-in-one filter head incorporating a thermostatic valve and connections for an oil cooler. However, it is both un-tested and unbranded so I can't tell you where to get one from or how good it is.
The contents of this website are purely a reflection of my own experiences and knowledge gained whilst working on my various projects. Anything you do based on what you have read here is done so entirely at your own risk. Personally I wouldn't trust someone like me with a lawn mower! You have been warned! Flapper-bat!