pfcmooney

Which of these motors is the best to replace the 13b n/a ?

1. 13b TT Cosmo
2. 13b T2
3. 13b TT 3rd gen
4. 20b TT 3-rotor

I thin the 3 rotor would be bad *** to put into a 2nd gen, but how much more harder would this be to achieve than just a 13b TT Cosmo? or the 3rd gen? I'm looking into a motor swap, and i'm not wanting to do a V8 swap, i want to stay with the rotary.....any suggestions?

porsche4786

In the future I want to put in a 3 rotor n/a. Turbo rotary's don't seem to last long.

FirstRotaryExp

iTrader: (3)

Well....it all depends on what you want. Ive heard good things about everything, though its all in the prefereances and wallet size of the owner.

pfcmooney

Really? I didn't know that.....so do you think the 3 rotor n/a would be the best option?

FirstRotaryExp

iTrader: (3)

The 20B is a great option should you want more power than you can shake a stick at, though the swap itself can be a nightmare for those not ready for it. Search the forum for 20B swaps and you can see what it cost them and what it takes to do it. Just a small question though...what car is the choice of powerplant going into?

pfcmooney

a 2nd gen rx-7, is that a good idea or no?

FirstRotaryExp

iTrader: (3)

Will definitely be a sleeper depending on how you make it sound and look.

pfcmooney

What does a 3 rotor n/a run in the 1/4 do you know?

FirstRotaryExp

iTrader: (3)

I am unsure. Though it all depends on whats been done to it, no 2 cars will ever run teh same. But a 20B should be faster than a 13B if the mods are teh same.

pfcmooney

Okay, but i'd have to get a wiring harness and all that for it also wouldn't i? If so, where would i get one of those, and also what car has the 3 rotor in it?

FirstRotaryExp

iTrader: (3)

You could get a wiring harness for it, though like i said, id search for ppl whove done it and see what they had to do. More than likely youll have to run a full EMS for it to get maximum power from it. But i cant recall what car they came in.

pfcmooney

okay, well thanx for the help bud i appreciate it!

FC3S.USD

iTrader: (2)

Just go for a 13bt and spend the money in other places.

U\You will need quite a few things.

FirstRotaryExp

iTrader: (3)

No problem. I know how hard it is on here with all thse guys who all they do is tell us to "Search" Sometimes its a pain to do so, so we just ask away.

theman4444

It's gonna cost you about $20,000 to buy and fully install a 20B in a 2nd gen.

About the same amount to get a 3rd gen engine in your 7 but with a lot less reliability.

About $2,000-4,000 to buy and install a 13BT.

These are all very round figures but should be within the range. How deep are your pockets???

NOPR

high 11's to low 12's in a 2600lb FD.

check www.fc3spro.com for a break down of each of these swaps. for more info on an N/A 20b, check this thread. https://www.rx7club.com/20b-forum-95/my-rx-7-done-cup-holders-3-rotor-semi-p-port-n-setup-stock-subframe-454580/

it really comes down to how deep your pockets are, how much custom fabricatiion you can do and how much horsepower you want. assuming you want maximum horsepower with unlimited budget, a single turbo 20b will get you quadruple digit horsepower.

Jager

iTrader: (10)

Wow, 20,000 for a 20B and a 13B-REW.

I hope YOU searched. Cut that cost down to half or so.

theman4444

I said buy AND INSTALLED in a 2nd gen. That's including everything and having a nice running car at the end. Plus I said it was a very round figure. :P

[EDIT] You can have a really crappy engine and full swap done for half of that. LOL

Jager

iTrader: (10)

Nah actually, I sat down and spoke with a few engine builders about the swaps, they commonly do them for 8-12k. A 20B and a REW aren't that hard for a swap (REW being the later). **** they even make 250$ mounts for the RE engine!

And I'm talking about rebuild and everything. Its overall not that hard or with the expense you claim.

pfcmooney

So, what your saying is i could get a 20b rebuilt and installed for 8-12k? If so i'm definately in on that!

SirCygnus

iTrader: (1)

yup. send it to rotary resurrection and hell rebuild it for less than 2 grand i bet. then you need an engine management solution. then you need to tune it. then fueling. its gonna cost a pretty penny. also the drivetrane 3will need to be swapped out. a beter radiator
basically your looking at around 10 grand for a nice round figure.

Bukwild

20b used complete cores are on ebay all the time for 3k

rebuilt ported and put back together with the best parts money can buy 3k

clutch & flywheel setup 700-800

Custom manifold/header 700-800

motor mounts/rad/fan 1k

full ems with complete tune 1500

someone to install all this stuff for you, add another 2-3k

thats a good round about price line. I think the most important thing to get out of all this crap is the full ems. Because once you have that you can run any engine combo your pockets can handle.

pfcmooney

I've got a stage 3 clutch in my car now, and i converted it to an electric fan, but the only down fall is that i've got a carb setup, and i'm wishing it were fuel injected so i can boost it....i'm going to iraq the 1st of december, so i'll be coming back with prolly right under 30k, so money isn't too much of an issue, but i'd like to redo my body work also, so if i had about 20k, to do everything, what engine and what setup should i do, and i would like to be turbo'd .......which setup????