I have a 1991 convertable that i got with 57,000 miles for three throusand in very good conditison. now i dont know much about the car. but i seen another one with a turbo 2 engine in it so i thought that i could do the same. But the one that i saw was a stick mys is a automatic. so not knowing i want and got a twin-turbo from a 3rd gen because it had a automatic set-up. The motor came with wiring, ecu, shaft, intercooler, and auto-tranny. now i cant find anyone to put it in from with people are telling me is that its to hard to do, or it cant be done. now i have been a mechanic at acura for 7 years but never worked on mazda. So can anyone offer any use-full information.

 

read the faqs in the 2nd gen forum... it gives the answer and some good write-ups to answer that exact question...better yet i'll even give you the link.. its in the 3rd-4th page down..

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/frequently-asked-questions-2nd-generation-rx-7-faq-fc-494667/

 

I see nothing in the faq about a automatic set-up at all.

 

The tranny difference isn't mentioned too much. Read this particular passage and look at the links contained therein...

Will a 3rd Gen RX-7 (FD) twin turbo engine (13B-REW) fit in my 2nd gen RX-7?
The simple answer is No! The motor mounts are in different locations as well as other issues; however if you have enough time and money it can be done. Much of the project will be custom fabricating all the systems that attach to the engine such as the exhaust, intercooler setup, cooling system and wiring. A standalone EMS is almost required and it is very difficult to control the sequential turbos. Most people go to a single turbo because of this. In general this swap is not worth the time and trouble unless you plan on making more then 450 HP.

Here is a basic write up: http://fc3spro.com/TECH/SWAP/FD3S/rew.html

There have been many past threads covering swapping the 13B-REW into an FC:
https://www.rx7club.com/forum/showthread.php?t=724758
https://www.rx7club.com/forum/showthread.php?t=721243
https://www.rx7club.com/forum/showthread.php?t=717051
https://www.rx7club.com/forum/showthread.php?t=718967
https://www.rx7club.com/forum/showthread.php?t=636334
https://www.rx7club.com/forum/showthread.php?t=713592
https://www.rx7club.com/forum/showthread.php?t=712829
https://www.rx7club.com/forum/showthread.php?t=710959
https://www.rx7club.com/forum/showthread.php?t=710360
https://www.rx7club.com/forum/showthread.php?t=699306
https://www.rx7club.com/forum/showthread.php?t=690691
https://www.rx7club.com/forum/showthread.php?t=686057
https://www.rx7club.com/forum/showthread.php?t=628090
https://www.rx7club.com/forum/showthread.php?t=681876
https://www.rx7club.com/forum/showthread.php?t=663582
https://www.rx7club.com/forum/showthread.php?t=674513
https://www.rx7club.com/forum/showthread.php?t=672656
https://www.rx7club.com/forum/showthread.php?t=668437


-Mike

 

that sounds like a "Do it yourself" task from hell. good luck.

 

The biggest issue would be if you wanted to use a FD auto tranny in a FC. That would require using a FD ECU.

 

hi there new to all this so bear with me it has taken me three years to build my fd3 1992 iv had it on the road for 6 weeks and a problem has come up on my interment panale rev counter has stop working and so has the speedo and tem an oil go to the top all is ok when egnistion is turned on its only when it starts up it all gos to pot if anyone can help please reply asap as my head cant take no more thanks paul