Carner

what would you spend your $$$$ on rebild a 12a, 13b carb or a 13b turbo? if your starting from a 12a that has 180,000 on it

kettlman

iTrader: (2)

depends on how much money i have. would definatly stick with a 12a though.

Bolox

big port 12a

thats my plan when my current engine (350,000 Km) dies

IanS

iTrader: (4)

12A in my opinion is just a little easier to mess with. Dont have to worry about all the extra computer stuff. Unless you carb'ed a 13B and that would be cool too. Just depends, cuz if you buy a 13b then you would want to mod it and why not just build up the 12a (after rebuild) with all that money? My 2 cents

high-RPM

what have you already done to your 12a
??
if nothing then go 13bt, otherwise stick with 12a and build it up

crossmemebers and mounts have to be played with to go 13b and 13bt
... its probably not as cheap as you think

YapaKanichi

13B carbed SP it too. And don't get a 6-port either.

mcnannay

well if you already got a 12a go for that, but personally i love the 13b, and turbo just equals more fun, really it comes down to the money dude, but you'll find the best power out of the 13b unless you start porting

bkm_rx7

<----damnit, why cant it say "he's stupid"?

My 12a will be faster than my bro's 13b shortly, stick with the good 'ol 12a. And definately SP it and put on a RB exhaust and headers. Cant go wrong with that setup.

^^^ Thats just IMHO.

heb09

12a turbo for sure. Other wise a 13b turbo.

karism

Stay 12A.Play with the porting.Streetport is sounds like a good idea while its opened up

Everything is 13B these days.

Just my 2 cents..

Karis

anthrax

Sticking with the 12A is going to have less problems. Switching to 13BT will have all kinds of dificlulties. If you are interested and doing that talk to some people that have done it. There are lots of threads on the forum.

Just make sure you do your research before going 13BT

Tom

I would consider another big streetported 4port 13B, NA.
That's a fairly well behaved reliable little set-up.

faye x7

Once my 12a dies on me, I am going to go thte 13bT with SP.

Jeff20B

iTrader: (13)

I have nothing but carbed four port 13Bs (some SP, some stock ported). Well, I do have two other engines, each with a 2 in the raised-letter engine designation on the rotor housings, but they're not your typical 12A from '74-'85.