Originally Posted by Alperovich
why would coupes and sedans be different? its the same engine, unless its a typeII.
however, i don't know the answer to that questions.
Yup, did some research and found the following:
All coupes have an oil cooler stemming from the oil pump housing, the only difference being that type I and type II cooler "caps" (where the hoses get connected) have the water hose nipples at slightly different angles.
91' and 92' sedans have an oil cooler as well, same "caps" as the type I coupes.
93' thru 95' sedans do not have an oil cooler they just have a plain "cap" with no hose nipples at all, however, the GS sedan(both 94' and 95') has an oil cooler and has the same "cap" as the type II coupe.
With this information and using deductive reasoning, I would say with an oil cooler you would use the water pump with two ports and without an oil cooler would be the water pump with one port.
Anyone else feel free to do your own research, but I'm confident that this should be the difference.
BTW don't usually do this but
+1 for me