I just bought a 91 Rx7 and has a 2JZ swap I need to get lil parts for the engine but I want to know what other things i am going to need to wire the car and mounts. Any help would be awesome.

 

I suppose it depends on exactly what you need, but if the engine is already in there I vote for proceeding with the swap. If the engine is not in the car and the car is stock, then you should decide what is the best balance of cost, time, and what you want from your car.

Generally speaking, provided the engine and trans are already in there and mounted, you mostly just need wiring and fluids.

So:

- Standalone to control the engine (maybe stock ECU, don't know if a Supra ECU is happy when put in a car that isn't a Supra).

- Fuel, coolant, oil lines, heater hoses if you want a heater. Upgrade fuel pump. Hopefully stock rad and an e-fan fit, otherwise you have more work to do. If this is a 2JZ-GTE then you need an intercooler as well.

- Custom driveshaft to mate to the Rx7 rear-end, if this isn't done already.

- Any of the "little bits" that you mention are missing.

- Custom exhaust solution

- Possibly cut the hood or replace with aftermarket. Inline six engines are very long and relatively tall, whereas the 13B is very short and almost squarish (which is why V8 is the usual go-to).

- Oil pan? An I6 will definitely need a custom pan to clear the subframe and steering rack.

That should be most of it but I guarantee you will find lots of little things along the way that also need to be changed.

P.S: I'm not a person who inherently dislikes swaps, but the 2JZ is long and heavy enough that some of the weight will certainly end up in front of the front axle-line. The Rx7 from the factory is a "front mid" arrangement where the engine is in the front but remains entirely behind the front axle. With this new arrangement you're certainly going to find the car is front heavier than before so be careful when driving it for the first time.

I'm not quite sure how it will change from the way a stock Rx7 handles (I suspect you will find it has a tendency to understeer a bit) but there will definitely be a difference.

 

We need more details about what you already have.