Hello everyone, I'm new to this forum and new to the EA827 engines. I've been rebuilding a 1988 Audi 80 B3 with my father, a 1.8S supposedly. About 3 years ago, the previous owner shot the engine so we swapped it from a donor 1.9, but kept the 1.8 head and the carburetor. We bought it a couple of months ago, rebuilt the engine, put it all together. Not one of us thought of examining the engine codes before putting it back in the car. I found the dotted PP between 3rd and 4th cylinder, which I found to be a 1.6 engine. The block is dated early 1990, the head is late 1987. After searching for clues online I'm even more confused as there are so many versions. That's why I'm looking to get some more insight from you guys. I got some info that might or might not be helpful. - Engine code PP is dotted, but all other codes I saw are stamped - The pistons heads have shallow holes in them for the valves. - Piston and valve collide if timing is not correct (we found that out when replacing hydraulic lifters) Sorry for a long read, I really hope someone has an answer to this as I'm stumped and my dad doubts it's a 1.6.