[pimpmcdaddies]

Originally Posted by lxndr

Yes

An '86-'89 D16A1 from an Integra will fit into any '84-'87 Civic or CRX. The '86-'87 D16A1 motors will be the easiest to swap into an '85-'87 SI since the electronics are near identical. The '88-'89 D16A1 motors are a little more involved since they use a VSS (vehicle speed sensor), ELD (electronic load detector), electronic advance distributor, and a different ECU.

In order to swap any of these motors into a carbureted car you will also need a donor wiring harness, ECU, fuel pump and some sort of check engine light (PGM-FI light) to let you know if the ECU is sending a code. Or you could convert the D16A1 to run on carburetors. But be warned, you're on your own for a carbed intake manifold since no one makes them for a D16A1.

There are other differences between the motors as well. For instance, the '86-'87 D16A1 motors use slightly stronger rods and have dished pistons. While the '88-'89 D16A1 motors use slightly lighter rods with domed (interference) pistons. The '88-'89 motors also produce a little more power over the '86-'87 motors (stock comparison) due to the increase in comression ratio and also because of the slightly better flowing intake plenum.

The main difference between the '86-'87 and the '88-'89 motors is in the cylinder head. The cylinder heads are swappable between the years but are not compatable with the different engine management system. Meaning you CAN put a, '88-'89 D16A1 cylinder head on an '86-'87 block, but in doing so you will need to use the '88-'89 ECU, VSS, distributor, etc.

I've got an 89 Teg donor car.So can I use the distributor and ECU from the teg (and engine)on my '87 Si or must I use distributor and ECU from an earlier Teg?