5th gen
* B16A SiR
* B17A
* B18A
* ZC/D16A6/8/9
* any C-series motor
We don't recommend these motors for several reasons as well. These motors are OBD-0, making it a hard swap into a car wired for OBD-1. It is easier to go backwards (as in, taking a 5th gen motor into a 4th gen chassis) than forwards. Remember, its all about backwards compatibility, not forwards.
While we haven't listed the H-series motors as a non-recommended swap, we would like to say a few words about it. An H-series motor is generally 60-80 lbs heavier than a B-series motor. This adds to the already poor F/R weight distribution of Civics/Integra's. While it can be solved with a set of stiffer springs and tighter shocks up front, it is still not a good choice for an AutoX or road course car. For drag, it excels. It's heavier, putting more weight on the front wheels to help with traction. In addition to the weight factor, the chassis will need to be modified a little bit to fit it. Some things on the fire wall will need to be moved (such as brake master cylinder) off the wall. The drivers side quarter panel will also need to be dented in a little bit so the crank pulley doesn't rub.
6th gen
* B16A SiR
* B16A3
* B17A
* B18A
* 94-95 B18C
* 94-95 B18B
* ZC/D16A6/8/9
* any C-series motor
The reasons for these motors is similar to the 5th gen's, only now we include OBD-1 in the list. When you own an OBD-2 chassis, the easiest swaps are OBD-2 motors.
The same general principles apply for the H-series motors as listed in the 5th gen's explanation.