Alright, here is my story. I bought a 1983 car last year w/ a normally aspirated 12A in it w/ high mileage. The car runs, but I now have more reliable transportation and would like to make this my project car. I have the means, tools, right connections for parts, etc. but I lack some of the know how when it comes to Rotary power. I am torn. Do I try to go back w/ a 13B? If so, which setup? a Turbo II out of a gen 2 car? (thats what I'd like) If I elect this road, what all does this consist of? Motor mounts wont match up so I've read, thats one issue. I have also seen where it appears to be not much more difficult to shoe-horn in a 5 litre Ford V8. I'd like to keep her rotary powered, but I know my way around a pushrod V8 unlike the rotary. V8 will produce more torque, but it still isnt a rotary. What to do? Input? Experiences? Ideas? Any would be appreciated!

Thanks in advance fellas!

 

so you want a more relieble setup. yet you want to swap in a TII?


when taken care of the 12A is one of the longest lasting rotary engines to date.

 

Okay.....yes, I know this of the 12A, although, I HAVE reliable transportation (as in a 2004 Toyota Tundra) and this is now my PROJECT car (not relying on it to get me from point a to point b on a daily basis) and I'd like to put something under the hood that has a little more umph. Maybe you misunderstood my origional post. Sorry if I was not clear.

 

Do a carbed 4 port 13B with a big street port and a light weight flywheel. I have heard of people getting near 200hp with this setup. Depending on other mods. It would also be a good all around motor.

 

Go with teh 20B ... or the TII if like most everyone else you can't afford it...and straight from the FAQ: https://www.rx7club.com/showthread.p...threadid=65800

 

TII gives you the most bang for the buck if you do all the work yourself and start out with a good engine.If you dont have the knowledge and understanding to convert to EFI,then you better start learning quick,or be prepared to pay a few grand more for a shop to handle it.All the info you need is on this site,if you search for it.This question is asked 3 times a week.
Turbo engines make power and torque in places that most N/A rotaries just cant.....down low.200HP/200lbs torque when bone stock,with another 50HP easily in reach with little/no reduction in longevity.You just have to restrain yourself from f-ing with the boost and exceeding the factory EFI's capabilities.

 

rgrgr that,

yup, I like the TII as far as cost and what I can get out of it. I have found a couple of complete TII engines at decent prices. I'm pretty sure this is the route I want to go, now I need to find out what all the swap consists of. Any cutting, welding, repositioning? what all needs to be swapped besides the engine? what problems I'll more than likely run across, etc. etc.

Thanks for your input amigo, I appreciate it.

 

No welding,only minor tweeking involved to get it mounted.If you swap in all the correct parts from a GSL-SE,then its a drop in affair.

Converting the fuel system to high pressure EFI and wiring for the 2nd gen ECU are the tough parts.Both jobs have been adressed many times here.The wiring isnt too bad,but you HAVE to know what you are doing.There is no hacking or cutting into the stock 1st gen wiring when doing the job.You just have to fab and route some wiring and relays to supply power to the TII coils and ECU.

N/A tranny will work,but its not a good idea.The TII tranny is bulletproof and easy to aquire.It also requires some custom work and some $$ to install,but its not too hard.Again,you just have to know what you are doing.

Also,the 87-88 TII is a cruder engine,but easier to install in the 1st gen because it more closely resembles the 1st gen GSL-SE 13B engine.The 89-92 TII engine is more refined and has more power,but requires a bit more custom work to install, due to its wider use of electronics.

 

hi if you do a v8 swap you will not go back . i finshed my 84 rx7 gsl se about 2 months ago . a 5.0 with gt40 heads f303 cam webfunnel intake with 750 demon crab and a tremec 5 speed trans. the car is super fast and fun.

 

i say 5.0 mustang engine!

 

doesn't sound like you really care and for that reason, i'd have to say go for a N/A 13B. if you plan to keep the car for a long time and you don't want to keep messing with it, i think it would be the choice that brings the least long-term hassle. really no such thing as a "NEW" 12A any more, but you can get a new 13B. you'll spend a little more up front since you'll have to get one intake or another, plus some exhaust work, but if you do it right the first time, you'll never have to mess with it again. with understanding and care it can loast just as long as a 12A.

 

I got an extra 271 V8 Flathead layin around....hehe. But seriously, I gotta give props to the 12A. With just a streetport, carb and exhaust, looking around 175HP, and reliable as you can get.