666mike666

ok wheni buy my1st gen rx7 i allready know i want to put a 13B in it but i dont know which one to get and put in. 2nd gen 13Tor a 3rd gen 13BETT? help me decide

z-beater

Well...there is a little button called search! Not to be an *** but there have been a couple great threads within the last couple months that have outlined this.

666mike666

well sorry

666mike666

i just been hear ups and down to the different engines mostly the 3rd gen motor

aussiesmg

iTrader: (1)

Go to rotaryshack"s page and ask Robert for a recommendation based on what you use the car for. he seems to be the man.

https://www.rx7club.com/rotaryshack-164/

Tournapart

iTrader: (4)

do you want reliability or performance? with the 2nd gen 13BT you will get a more reliable turbo motor than a 3rd gen 13BTT 13BT=190-200hp at the crank 13BTT=245-255HP at the crank with a smoother boost feel with more kick due to the twin turbo's.

PaulFitzwarryne

Buy the latest you can afford. If its a Gen 3 you have 3 options, either the RX-7 or Cosmo twin turbos or go to single turbo- this has been done by many and there is a forum on this option.

FIBREMAZ

If you have the cash Cosmo or FD block is definitely better than TII block in many ways.

mbaha

Get a V8

aussiesmg

iTrader: (1)

^^^^ sniper...lol

85rotarypower

Go with the 3rd gen engine, just ditch the turbos. They are no good for anything. Switch it to a nice single turbo setup. The TII engine is great, but the 3rd gen engine when done with a single turbo is more reliable, IMO.

razorback

^dont forget GOOD tuning. dont cheap out or you will pay for it.

Nicholas P.

iTrader: (1)

you dont have to get a 3rd gen engine.... you can go with a 12A.......

PaulFitzwarryne

But not if you want maximum power with reliability, the 13B will always outperform the 12A in identical set-ups.

However, I agree with you in one respect. Too many people buying their first RX-7 innediately dream of going 13B turbo, rather than learning about their car and gradually improving their 12A. A well set-up 13BT is costly and you never get your money back. It is a sound investment only if you intend to keep it long term and enjoy its performance. But if your 12A is dying then going 13B is a good choice.

As I said early, get the latest 13B you can afford, and if its a 13BTT think of going single turbo. You lose minimum allround performance but gain reliability.

666mike666

alright want about mounting the engines in was is there to do?

Nicholas P.

iTrader: (1)

Paul I agree with that.

My first RX-7 which I am on now. is a 12A
its a great teacher. carborated and simple. but when my 12A goes out I will stick a 13B in their.

I doubt anytime soon.