It's a 2nd Generation, and you have an ET2 motor (was renamed to A18A1 in '87). The 2.0Si has a BT or A20A3, which is also found in the 86-89 Accord Fuel Injected models.

In Japan (and a couple other countries) there was a Dual Cam B20A available for the 2.0Si's (it's different from the B20A's from the 88-91 3rd gens)