I was just looking at the engine I am about to have swapped into my 1992 Civic DX. I was looking on the engine and it's stamped to the right of where the header would be attached P72-1, does that mean it is an OBD1 engine? If so what year would that make it? Also the transmission says S80, does that mean it is a Helical transmission or a LSD? Very confused!!

 

P72 is a minimum of obd1 but could be obd2.

S80 means its an integra tranny. if it has lsd then you are lucky but only came oem on type r's.