hufamoose

I would rather have a carburater, I know there is a 13a, but not quite sure what it is. Is there a 13 series with a carb? or something bigger than the 12a, with a carb?

nick812

you can carb any 13B with the right intake. Also would need a few other things off a 12A but it all depends on what 13B you puting in the first gen.

vipernicus42

iTrader: (4)

13a, (if it ever existed) would have been something that wasn't in a production car.

Older cars like the Rx3-4 had carb'd 13b engines

Later cars like the '84-85 GSL-SE and 2nd gens had FI 13b engines

The good news is that it's *relatively* easy to get your hands on a carb manifold for your 13b, just don't forget that you also have to change out your fuel pump because carbs expect much less pressure than FI.

Jon

trochoid

iTrader: (6)

74-78 13B had Hitachi carbs. RB offers a carb set up for 13Bs with the Holley, and an upper intake mani for the 2 barrel Mikunis, Dells, and Webers, to fit an SE lim. If you add a Mallory 4309 fpr, you don't have to change the fuel pump or replumb.

Rogue_Wulff

There was a 13A, but it did not work very well. It never went beyond the experimental stage.
As previously stated, any 13B can be carbed, and the early ones were from the factory.

FIBREMAZ

The 13A was in the R130 Luce. only front wheel drive rotary Mazda ever produced.

hufamoose

Nice, thanks for the info.

What kind of horse power could I expect from a stock 13b, with a carb set up?
Any sugestions on were to start looking for a carb conversion?
Can I just convert a 13b to a carb set up, or is it not really worth it?
If the 12a can be turbo'd (real word?).... could the 13?
I thought that an engine could not run a trubo on a carburated intake setup, or is that non-rotary type thinking?

BigJeff

Yeah you don't want a 13a.

Mazda switched from the 13a to the 12a/13b for the Luce after only 3 years of production on the 13a in a single model. The 13a uses a different rotor shape than the other rotary engines and it just wasn't that great apparently.

So, if you can find a 13a, it'll be hella expensive (there were only a couple thousand made, after all) and not really worth much other than as a collector's piece.

For some reason I really love the idea of a carbed rotary (my 12a is carbed), so I say go buy yourself a holly or weber or somethin, get a 13b carb mani from RB and go to town man!

HP bone stock should be in the 130s, and seriously the conversion is like, get a carb, get a manifold, get an fpr, and hook em all together. There's a little more to it than that, but not much.

hufamoose

Thanks guys, I'm getting so psyked, I have been toying with the idea of getting rid of my other toys, to concentrate on this

steve84GS TII

Right before I went with my first EFI turbo engine,I was at the pinnacle of my carb days.HP was around 170 at the crank with no porting and only bolt-ons.

The engine was a stock 76' 13B 4 port with my Yaw Nikki carb and 12A intake manifold.Full direct fire MSD ignition,RB header/exhaust system and light flywheel.It was plenty fun,kept up with my buddies GSR powered Civic and probably could have passed smog if I put all that crap back on at the time.
An even 200HP could have been reached with porting,and even more power could be gained with a more "race" oriented carb.But I liked the streetability of that setup.It started,drove and behaved like stock,except with real torque and 70% more power.I only went EFI/turbo because it became availible to me, and I wanted a more legal/smog friendly setup.

JoeNoble

iTrader: (6)

If you can carburet a 13B then can you fuel inject a 12A? Just curious cuz I have a 12A and was thinking about eventually transplanting a 13B so that I could go turbo.

trochoid

iTrader: (6)

You can, Tweak-it/TWM make throttle bodies. By the time you have it installed and running, it will cost more than you probably paid for the car.

Siraniko

iTrader: (13)

Rene @ RX-3mist.com is currently working on the duece. Its a custom made 70mm throtttle body with turbo hat and it sits on top of a IDA intake manifold. 4 injectors haltek etc etc. Its a 13-B TII streetport built by Sidepex Engineering in CA, large turbo, NOS, he estimated the HP to be above 500hp. He is pushing it so the duece can be dynoed next week. It will be at the Japanese Classic Car Show in Long Beach CA 09/30.

I just dont know how we can get traction with all the ponies.

Siraniko

iTrader: (13)

John meant the RX-4, REPU and Cosmo came equipped with 13-B.

nick812

I read some where that there was also a 13G motor what did it come in?

aa35199

iTrader: (1)

http://cp_www.tripod.com/rotary/pg19.htm

Lotsa info on this very rare and expensive rotary

toyo_kogyo

Experimental stage? My 37 year old 13A engine works very well. It has never been pulled apart. Its got great torque at low rpm

wanklenoob

I'd love to have a carb'd 13b, I don't know how to install a EFI system, so that would save me a lot of hassle.

slayerx7

iTrader: (4)

its all about the 10a

toyo_kogyo

http://nz.youtube.com/watch?v=LzX_X5AZ5dw

http://nz.youtube.com/watch?v=GfkLUMJk44M

orion84gsl

iTrader: (5)

Sam (dj55b) converted his 12A to FI using Fuji Racing throttle bodies, a Megasquirt and a Racing Beat manifold. Goes like snot and sounds evil.

j9fd3s

iTrader: (3)

wow thats rare. mazda brought a restored luce to sevenstock once, but it had no engine

j9fd3s

iTrader: (3)

thats the 3 rotor race engine. its way different from anything else. its got its own irons and rotors, dry sump etc etc.

only "production" piece it uses were the PP rotor housings.

my mazdaspeed catalog says 450ps @8500rpm, with efi

toyo_kogyo

I have sold some 13A parts to Mazda so they can restore the engine to that Luce. Hopefully see it at sevenstock 12

mazdaverx713b

iTrader: (91)

that would be a good video to post....