GTS engine specs versus S4!
#31
Addict
Rennlist Member
Rennlist Member
The pistons have 8 holes, which are round in shape, and not oval like on some GTS pistons and go all the way through the material - just like on earlier S4/GT pistons. The pistons do have Porsche Part Nrs on them, however I don't know what material they are made of, since Porsche installed dry liners in my block in the factory. Remember, my engine is one of the very last ones. The liners' material seems to be steel, but I cannot be sure.
#32
Rennlist Member
The mystery deepens even more - they don't have an extra groove... See the pic