RBP

Would anyone know where to obtain and who publishes the correct specifications for piston ring gap when installing new rings. I have a 964 video which just shows the Goetze Rings out of the box going on the pistons. Other information sources seem to indicate that one needs to make sure there is a proper gap on all the rings.

Churchill

If you go to www.google.com and type in "porsche 993 piston ring gap" it's the first result.

cscrogham

The proper ring end gap is a function of the total circumference of the cylinder, ie not the same application for every engine. Very good info is on the Mahle website.