4AC-4AGZE swap

[Mux213]

Hey Matt,

Do a search! <grin> nah just kidding, you wont find enough on what you are looking for

Okay one thing you may wanne do is check the thread above/below this one with efvan42 who's searching around on details on doing a silvertop swap into his 4AC powered hachi. You two guys are gonne be able to help eachother alot. You are going to have face alot of similar problems. Yes the silvertop and 4AGZE are different powerplants (he's not going to have to deal with intercoolers and superchargers) but at the same time the swap has alot in common aswell (power increase, carb to EFI, etc).

The added difficulty from swapping 4AC to 4AGZE compared to 4AGE to 4AGZE is in the fact that the 4AC is carbed so you have serious short commings on your fuel system and there is the shortcommings in the electrical system.
For fuel system best option is probably swapping the whole system out for a GT or custom making it. That means fuel pump, fuel lines, filters, the works, it don't have to cost much, but you do have to do it. Keep in mind that the stock 4AG fuel pump probably does not supply enough fuel for a 4AGZE. If you've swapped all the other GT bits over an Mazda RX7 FC TII is supposed to be a direct fit and those pumps deliver plenty of fuel.

For electrical system, I truely have no clue The only 2 SR5's I've seen in my live got swapped to GT or Silvertop specs before I ever touched them. I can imagine though that with a total lack of EFI they miss all the electrics that you need and what electrics they have are probably not up to the demands you are going to place on it. Now probably with the 4AGZE swap you'll be using the 4AGZE wireloom anyways so probably this wont be a big problem allthough joining it togethr with the 4aC wireloom (that you do need for the normal bits like lights) might be a nice challenge

Another thing that is very important to realize is that the 4AC axle is gonne kill itself if you hammer it with the full potential of the 4AGZE, same story as with the silvertop. These axles are not ment to take more then 100hp or so. You need to atleast swap to a GT or hiace axle even if you keep the drumbrakes (easier swap then going to full disk brakes).

Last but not least, and I forgot to mention this to efvan.. Don't forget your brakes! Brakes are a sensative subject with hachi's from the start. Given that with fresh GOOD pads, good rotors, new brake lines, good booster these brakes are great for normal driving and last for your average track days, but for serous track days they simply leave alot to be desired. Add 30% or so hp by supercharging you'll increase your demand on the brakes on the circuit (you'll be going faster, you'll be braking more), you'll get into more trouble if you keep the stock brakes.
Not as much of a problem if you're building a drift car. But if you're going for a track car upgrading your brake system is a must if you're going for more hp (and drumbrakes are gonne be a no no then).

Note: I've NEVER done a swap in my whole live. Above is the general picture I've gotten from what I've read on this and other boards and from my own research from wanting to do a 4AGZE swap some day if they are still available by then...

I really hope you succeed in doing this, PLEASE LOADS OF PICS! Document every step of the way in full details, then I will owe you big time