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Old 12-26-2007, 04:30 PM   #1
SGMRUX
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Default rotary swap

im lookin for some input, my wife wants a 11k motor and ive done some looking and ive been thinkin about using a 4 rotor 26b to swap in my gc but i dont know much about that motor or rotary engines,is there anyone who can help enlighten me on this or point me in the right direction where i can find the info im looking for?


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Old 12-26-2007, 04:32 PM   #2
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it's not gonna work without a lot of custom work... it'll all end up costing more then a new rx8
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Old 12-26-2007, 04:48 PM   #3
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im ok with it being costly. ill do as much work as i can. im fairly skilled with auto. i just might need the direction on how to and then i can take it from there,when i get stuck i have a many outlets and patience to do it right. im just getting my feelers out there to give my wife an idea of what it would take.
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Old 12-26-2007, 07:15 PM   #4
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I don't know that much about rotary engines,,,, how about droping some inline 4 engine and make it rwd?? say like the 3RZ-FE and it's 5MT
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Old 12-26-2007, 09:45 PM   #5
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Default 26b?

Dude, you do realize that the "26b" doesn't exist right? The 26b 4 rotor was to the best of my knowledge never built by mazda except maybe for a Lemans car. It is two 13b's bolted together with a new eccentric shaft. If you want to do this you will first need a really awesome machinist to make you an eccentric shaft. Then you'll have to figure out your engine management, remember you'll have 8 spark plugs firing for 4 "cylinders." So you're looking at custom wiring harness, engine internals, gaskets, manifolds, EM, and pretty much everything. I have to admit that it would be totally awesome for you to do this, but the headache and cost are prohibitive to basically everybody. Not to rain on your parade or anything, but it'll be very difficult, expensive, and may not even work.

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Old 12-27-2007, 02:02 AM   #6
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Quote:
Originally Posted by amoebaman View Post
Dude, you do realize that the "26b" doesn't exist
thanks brian. i realized that when i ran into a forum that said just what u told me. ive talked with my wife about her options she wants a 4 rotor but she said if i cant find a person to fab the shaft for me then to look at other rotary motors. so i pitched to her using a 20b with one large turbo instead of the stock tt's and using the rx7 turbo 2 tranny because of the stock tranny for the 20b is a auto.but well see it might be my long term project.
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Old 12-27-2007, 03:39 PM   #7
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Quote:
Originally Posted by qtr_wrx View Post
I don't know that much about rotary engines,,,, how about droping some inline 4 engine and make it rwd?? say like the 3RZ-FE and it's 5MT
or an rb25 or sr20. THAT BE SICK!
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Old 12-27-2007, 06:00 PM   #8
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couldnt you save a lot of time and money by using the platform the rotary was designed for? I understand its not as unique and what not, and people have put rotary's into GC's already, but why? a 3 rotor swap with a monster turbo could probably get the job done
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Old 12-27-2007, 11:21 PM   #9
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Default 4 rotor swap

The r26b was never put into production, It was used for mazda's 787b race car, it was a sick engine and there is a company that makes the eccentric shaft for mating 2 1.3's together......they also make a complete engine, but its spendy.....I have a FC3 that I wanted to put a 4 rotor in, but the shaft is $6k and the complete engine is $20k....btw the company is Yashiro engineering or Hurley engines.....I always wanted to take the same coupling they use to mate the 1.3's to each other and try it with 2 3 rotors for a total displacement of 3.9L.
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Old 12-30-2007, 09:01 PM   #10
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I agree with what Arora said above you can always hit up racing beat and Mazdatrix both out there in Cali in the L.B.C Signal Hill area I was goin to get a FC3S before I got my GC8 ( BIG MISTAKE) but worth it. The cheapest I place know to get a rotary engines in the L.A area. Just for stock Blocks. Thats if you can do the work yourself, would be Rex's off of Main Street and Compton Blvd I believe. You would go North from the 91 Freeway 0n Main St. and it would be on the left. Cant remember the address cause I havent been down there for about a year and a half (due to moving to Vegas) that would at least be the cheapest for a stock 12a or 13b short block that I would know in working order.
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Old 12-30-2007, 09:04 PM   #11
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may i inquire as to why your considering a mazda heart? im all for hybrids and swaps but im just wondering why consider this one? good luck with it though, sounds pretty crazy.
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Old 12-30-2007, 09:32 PM   #12
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His wife wants a 11k revving engine besides a Bike engine the Rotary is the next step unless he builds the hell out of the one he has but whats the likely hood it would live for more than a few months unless its a Japanese Shop car. Just being realistic why not got hybrid with the Rotary.
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Old 12-30-2007, 10:09 PM   #13
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I remember seeing a picture from I think tokyo auto salon where someone put a turbo rotary in a GC body, so it has been done.

For the money it's going to cost you to do this, I'd just look at getting an actual TT RX-7.
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Old 12-30-2007, 10:48 PM   #14
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Why hasn't anyone asked why his wife could possibly want an engine that revs to 11,000rpm? It seems like an unusual request for an engine build/swap to me.
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Old 12-30-2007, 11:07 PM   #15
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mm i rather have a RB25 all done up then a rotary any day
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Old 12-30-2007, 11:39 PM   #16
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That 4rotor stuff is crazy!! 700 hp N/A rotor would be sick especially with EFI and what not...Speed cost money "How fast do you wanna go..."
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Old 12-31-2007, 12:52 AM   #17
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Quote:
Originally Posted by DeMoe Aurelius View Post
His wife wants a 11k revving engine besides a Bike engine the Rotary is the next step unless he builds the hell out of the one he has but whats the likely hood it would live for more than a few months unless its a Japanese Shop car. Just being realistic why not got hybrid with the Rotary.
what's funny is that the rotary engine counts combustion events as rpm. SO 11k is only 3666.66666666 rpm...
I'll be aing for 12k on my next EJ motor (drysump build)...and that engine works with my car

current build is shooting for 10k on "factory" oil pump and crank...
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Old 12-31-2007, 02:17 AM   #18
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retarded much?
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Old 12-31-2007, 11:45 AM   #19
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retarded much?
um...who are you talking to? and in regards to what?

really a pointless post you have there.
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Old 01-02-2008, 04:11 PM   #20
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people build 1jz cars that rev to 11k all day long, why don't you look into that
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Old 01-02-2008, 07:45 PM   #21
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do you plan on keeping this thing AWD? if not, that opens a lot more options for driveline and suspension. a while ago there was a built outback wagon with a 350z tranny in it, strictly rear wheel drive. in the front, he used rx7 front hubs, dont really remember what he used in the rear.
rotary swap FTL, 1jz or 2 jz would be ideal. but if you are sold on a rotary make sure its a 20b, NA or turbo they are decent.
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Old 01-02-2008, 07:59 PM   #22
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good luck fitting a 1jz or 2jx into the engine bay...we have issues fitting 3 cylinders in a line much less 6

that is unless you want to move the firewall back about a foot.
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Old 01-03-2008, 03:18 PM   #23
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How about another EJ series motor. If you are interested in a high revving motor, do some research on the EJ18. I know that some people have very high revving ej18, maybe not quite 11k but high enough. Easy to turbo, you already have a great community here to help you out, and its a Subaru motor, so its a direct bolt in.

Also, why do you want a high revving engine? If you can get the power you want, out of something which is lower revving then why not? What are your power goals? Chances are there is a EJ solution that is far more reliable, easier to install, and doesn’t sound like a blender.

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Old 01-03-2008, 05:05 PM   #24
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there are lots benefits to a high revving motor but I wouldn't do a rotary, personally. And that's not just because I'm a subie head. I don't like them because; they are too expensive to build to make power, they break easily, they are fickle, need specialty shops for them, horribly innefficient and don't belong in a subie

What EJ18 have you seen spin anywhere north of 7k? no doubt a head swap was involved if this ever did happen. Also, an old EJ18 isn't really anybetter at high rpm's than an EJ20.
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Old 01-03-2008, 05:21 PM   #25
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this is a 100% "WHY?" thread.
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