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Author Topic: 13b Swap?????!!!!  (Read 11973 times)

Offline Paul

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13b Swap?????!!!!
« Reply #20 on: 12:26:06 AM / 17-Sep-06 »
to run a 20B in an S12 you would need a standalone ECU

the stock ECU will not work without the automatic trans from the Cosmo, They work together as one unit and they will not work apart.

I had always had the crazy Idea Of a 20B mid mounted into a '67 Corvair corsa lol I will do it eventually when I have 9K to spend on a motor swap
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Offline rage

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13b Swap?????!!!!
« Reply #21 on: 04:10:56 AM / 22-Sep-06 »
Quote from: abunaiS12
they can be had for about 3000 problem is usually they come with the tranny thats auto but ...i found one with engine only so u can put a manual on it for only 2250 at flashoptions.com a really cool website with the cheapest engine prices ive seen yet

rotary engines are superior engines and they only get better in my opinion the new renesis engine is the best engine ever made
hahahahaah, do a search on flashoptions

and n/a rotaries are reliable as hell
they just get finicky when a turbo is modded

TX > CA

Offline Nameless

13b Swap?????!!!!
« Reply #22 on: 01:17:39 AM / 18-Oct-06 »
Just remembered this pic, lmao  This is how a rotary engine works.



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Offline Smalltar_The_Impaler

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13b Swap?????!!!!
« Reply #23 on: 02:48:53 AM / 18-Oct-06 »
Haha, awesome... that's rotaries in a nutshell.

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Offline sam31183

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13b Swap?????!!!!
« Reply #24 on: 09:00:33 PM / 19-Oct-06 »
i love rotary engines and i still think that is fuckin hilarious!!!

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Quote from: Kustamogen
  haha me modding would be a disaster.....Id get all power hungry and  demand n00dz from everyone. Then make all the canadian s12er's come here  and massage my feet and make me jello pudding.

Actually....mod powers plz?!?!?!  0:)

Tedious?  This coming from a person who uses the word twice in a sentence?  I laughed repeatedly...


Offline Equinox

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13b Swap?????!!!!
« Reply #25 on: 11:37:47 PM / 19-Oct-06 »
go for it man  swap that rotary in there, however you should know for any rotary engine one of the first things that had to be done is a street port  if you don't do that you might as well not bother swapping it in. Other then the port rx7's can be powerhouses, a friend of mine in vegas has an older rx7 91 or 92 i think running around the 330-350hp range on the TT motor.  Good Luck witht he swap

Offline abunaiS12

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13b Swap?????!!!!
« Reply #26 on: 01:59:36 AM / 20-Oct-06 »
thats a funny ass picture, the 13brew has 260 something horsepower or maybe its 280 i dont remember with stock boost, i think the best way to go would be to get the 13brew and be kind to it and run low boost on it. those sequential turboes are genius. the 13b s4 and s5 that are in the fcS i think would have a direct relationship with that diagram though but the fd engines are much stronger. 13b-rew 1600 bucks thats cheaper then an sr20det.

Offline Nameless

13b Swap?????!!!!
« Reply #27 on: 06:22:51 PM / 20-Oct-06 »
Lol no they are not, The twin turbo 13b i just a tempermental as the single turbo 13b. Rotary engines go pow from people that dont know what they are doing. Just adding a full exhaust can add over 40 hp S5 rx7, This extra boost can cause tons of boost creep from the tiny waste gate flapper on the turbo.

 I love rotary engines, if i swapped one i would get one from an s5 rebuild it, Buy a new turbo, injectors, fuel pump,frount mount intercooler, rad, fuel cut defenser, a boost controller, and a haltech standalone. Then find a good tuner you can trust. If its tuned well, there is no reason you should be blowing your engine, as long as you take care of it. Remember oil changes are frequently needed on modified rotary engines, spark plugs also.

The 13b-rew has way to many vacuum lines that are prone to leaks and failures, because of the twin turbos. So you would want to swap to a single turbo setup. You might as well just buy a 13b from a turbo II rx7, abd upgraded from there. Same engine, just as much gains to be had.

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Offline abunaiS12

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13b Swap?????!!!!
« Reply #28 on: 06:00:20 PM / 24-Jan-07 »
yea except for that they aren't the same engine, there the same basic design and size but the 13btt was built with stronger apex seals and more tolerance

Offline sam31183

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13b Swap?????!!!!
« Reply #29 on: 03:27:46 PM / 25-Jan-07 »
yah, but you should replace the apex seals anyways.

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Build Thread Hatch CA18DET Eventually a Track Whore
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Quote from: Kustamogen
  haha me modding would be a disaster.....Id get all power hungry and  demand n00dz from everyone. Then make all the canadian s12er's come here  and massage my feet and make me jello pudding.

Actually....mod powers plz?!?!?!  0:)

Tedious?  This coming from a person who uses the word twice in a sentence?  I laughed repeatedly...


Offline falkhen

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13b Swap?????!!!!
« Reply #30 on: 08:20:10 PM / 17-Jul-07 »
there is absolutly nothing wrong with rotory engines.


pro:less moving parts.
con:suppose to mean less maintence, engine runs on total loss oiling system. you have add oil weekly or your motor is fucked.

Pro: motor is light weight to its power ratio
con: there isn't enough mass to distribute the heat, requires a large 3plus row radiator. (when moded)

pro: its relitivly cheap to have rebuilt.
con: if its ported forget a rebuild. find another block
the chrome side walls wear out on ported motors becuase they run relitivly rich ported. Under these conditions and that in turn cuases oil scavenging, reducing the amount of protective lubricant on the side walls.


if your staying N/A and going and going to Port it don't go any further then a J or bridge port(this only applies for NON-PP engines)
reliablity is out the window at that point.

there is lots of other shit you can do, but hey its your car i don't really care...


Offline TalkingGoats

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13b Swap?????!!!!
« Reply #31 on: 08:54:36 PM / 17-Jul-07 »
 Nice revival

If you want somthing that will make people shit its so loud go N/A and throw a corksport exhaust on it. That makes you sound like a chainsaw.... a really big chainsaw.
I'd rather be a matchstick than a lighter.

Offline JuneBug

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13b Swap?????!!!!
« Reply #32 on: 09:09:47 PM / 17-Jul-07 »
Quote from: DeathAndMajesty
Nice revival

If you want somthing that will make people shit its so loud go N/A and throw a corksport exhaust on it. That makes you sound like a chainsaw.... a really big chainsaw.

lol, I googled corksport rx7.  That sounds hilarious

Offline falkhen

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13b Swap?????!!!!
« Reply #33 on: 01:10:02 AM / 19-Jul-07 »
yeah i watched that too.. Kinda reminded me of a 74 Rolla with Monster ported 13b. That SOB was so loud it was mortifying. and i was directly behind it when they pulling off the trailer and it exploded its muffler. that event disquilified it from Street class racing. this is way back when IHRC was still around.  that little car went from thumpy rumble to terriable rapy crackly tsunamie of nosie.. i can't describe how loud it was....i remember it was idling at 2700rpms 100psi oil pressure, it smelled like race gas, and i couldn't hear my self scream...

that was in 97 later in 98 there was a pair of FD's posting 9's one exploded its rear end, the other almost lost control and hit the wall.

that was when me and eddy where running 95 Hyndai Lantra with 75hp shot of NOS and moded center force clutch(no body made shit for that car) we posted an 14.7 et. in 4 door grocery getter...


ok enough of me im up in the clouds..

Offline TalkingGoats

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13b Swap?????!!!!
« Reply #34 on: 08:44:15 AM / 19-Jul-07 »
If you watch the corksport youtube/google video for the N/A That car sound like a weedeater.... I still love rotaries but if i slapped a fart can on one my neighbor would probably slit my tires....
I'd rather be a matchstick than a lighter.

Offline gadget1382

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13b Swap?????!!!!
« Reply #35 on: 10:22:49 PM / 19-Jul-07 »
i love the revability of them...

It's a consideration for the track car. Light Powerful and wicked noise... would even out the front to back weight too.

Anyone know how good they are when run on gas (LPG) ?

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Offline falkhen

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13b Swap?????!!!!
« Reply #36 on: 02:56:35 PM / 31-Jul-07 »


Roy Lockhead somthing or that matter..
 i can't remember. what i do remember is that he was on the cover of TURBO magazine and his rx7 was propane powered. runing 9's

Offline Kooneon

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13b Swap?????!!!!
« Reply #37 on: 08:11:28 PM / 04-Feb-08 »
Quote from: fc3sdrifter121
wow, there is alot of people in here saying alot of hear say about rotarys , unless you own one you prolly don't know what you are talking about,

I think it would be a sweet swap.

go for it.

and there is ALOT of people in the states who can port a rotary,
I am one of them,

I ported my ols s4 n/a motor, and made 160whp w/ only intake exhaust and a small street port,

if you know what you are doing you can easily/safely get a 13b n/a to around the 250whp range.

but if you are doing a full custom swap I say find a 13bt motor!

250whp on a NA setup is hard to do and wont be streetable. But having owned a lot of rotaries, i say go fo it. I got a whole gsl-se waiting for some action. I might put the motor in my s12 as well. GOOD THINKING!
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Offline VG30_S12

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13b Swap?????!!!!
« Reply #38 on: 10:14:04 PM / 04-Feb-08 »
im kinda split on this one... I'm a big rotard... I'm also a now a big S12 fan... my heart says that id love to see it happen but honestly even though its completely pheasable, i don't know if it would be logical...

if you got the body sorted out(reduced the weight, get a good, non confused suspension under it, and pretty much just balance the car out)It would make a killer track car.. with the rotary's small compact design, it would fit further back and lower in the engine bay, AND on a track, most of the time, your in your higher RPMS anyway, that is where the rotary shines as a performance engine... Rotary engines make all of there power north on the powerband, and they have been proven over and over again, that they can handle overreving and high rpms longer.

As a streetable car? Its doable, thought i cant figure out why youd wana go through the trouble... LSDs and aftermarket for our cars are non-existant (cept for bartco) RX7s have a much more abundant aftermarket and lsd are plentiful... on top of that, i love my s12 as much as anyone on here, but is there anyone here, that could honestly  chose an S12 over an FC on looks alone?

I didn't think so...

as a cool factor, ice cold... but honestly with the money spent, id rather set up an FC. NOW if we were talking about that RaceSilvia guy with the red widebody S12 in finland, should he decide to go 13BT or NA 20B, I would just lose it

btw, if you end up doing, congrats and good luck, but imo your wasting your time trying to build an NA motor and 20Bs are about 10k to put into an FC. go 13BT and push "enough" boost, don't go crazy with 500hp or some crazy number... great rotarypowered cars are tuned with the balance of the body, not with the engine... and besides, boost kills rotary engines, but moderate boost with tunning can be reliable

na... if ya realy want some good rotary porn, go to youtube and look up Bridgeported and PeripheralPort NA motors, those are the ones that sound like pissed off chainsaws

and as always, go to RX7Club.com for cool vids, support and lots of flaming
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Offline ericclopein

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Re: 13b Swap?????!!!!
« Reply #39 on: 07:39:10 PM / 27-Aug-11 »
soooo did this ever happen or no?????