3 Rotor 13b!!! Not 20b
Thread Starter
Senior Member
Joined: Mar 2002
Posts: 296
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From: Connecticut
3 Rotor 13b!!! Not 20b
i saw this on a site and though id post it and see what people think? has anyone ever heard about people doing this? "13B engine with 3-rotors. Built using a custom manufactured crankshaft and a modified 12A Series 3 centre plate to accept a stationary gear , this is one unique engine."
http://www.hitman.hm/engine.htm
http://www.hitman.hm/engine.htm
Senior Member
Joined: Oct 2002
Posts: 333
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From: Driver's Seat
Yeah I have heard of this before. Pretty sweet. Worth doing? Probably not, other then you getting to say you built a custom 3 rotor which is pretty sweet. Probably no cheaper then buying a 20b though and installing that. I would love to have it though. 
Junior Member
Joined: Feb 2003
Posts: 26
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From: ny
is there an way for me to make my 13b and 3-rotor
just buyin an extra housein and rotor or is there much major parts that i would need
spyhon@aol.com
just buyin an extra housein and rotor or is there much major parts that i would need
spyhon@aol.com
Newbie
Joined: Apr 2002
Posts: 4
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From: GA
there are a monthly series write up about this 3 rotor 12A base engine on Option2 magazine. Its been going on for 3 months so far, and if you guys interested, I will scan some of the pictures of those ariticles.
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Rotary Freak
Joined: Jan 2002
Posts: 1,643
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From: l.a.
i'd like less chamber volume and more rotors personally. the smaller the combustion chamber the more efficient and faster burn you get. a big reason why rotaries comparatively poorer gas mileage and emmissions is because there's so much crevice space for air and fuel to hide and stay unburnt. a small 3 rotor, something like 1.8l, is my ideal. for you guys who think you should make 6, 8, etc. rotor engines, those engines are way too long. the longer you make it the more crank flex and block flex you will get. not to mention all the weight you will add to the nose of whatever car you put it in.
Joined: Mar 2001
Posts: 31,835
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From: https://www2.mazda.com/en/100th/
Originally posted by fdracer
i'd like less chamber volume and more rotors personally. the smaller the combustion chamber the more efficient and faster burn you get. a big reason why rotaries comparatively poorer gas mileage and emmissions is because there's so much crevice space for air and fuel to hide and stay unburnt. a small 3 rotor, something like 1.8l, is my ideal. for you guys who think you should make 6, 8, etc. rotor engines, those engines are way too long. the longer you make it the more crank flex and block flex you will get. not to mention all the weight you will add to the nose of whatever car you put it in.
i'd like less chamber volume and more rotors personally. the smaller the combustion chamber the more efficient and faster burn you get. a big reason why rotaries comparatively poorer gas mileage and emmissions is because there's so much crevice space for air and fuel to hide and stay unburnt. a small 3 rotor, something like 1.8l, is my ideal. for you guys who think you should make 6, 8, etc. rotor engines, those engines are way too long. the longer you make it the more crank flex and block flex you will get. not to mention all the weight you will add to the nose of whatever car you put it in.
mike
Maybe somebody ought to build some 10A rotors with 3 or 2mm seals and single side seals. Don't forget the heat dams. I would love to install 10As in things due to their shortness. A 3 rotor 10A would be even better!
Newbie
Joined: Apr 2003
Posts: 1
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From: Georgia
Some of you people were better off not posting. It's really quite stupid of people to shoot down legit, and VERY POSSIBLE ideas just because they're unheard of thus far. I personally am looking to build a 3 rotor for nothing more than testing and the knowledge gained, and before certain people shoot this down too, I have my reasons, and they are not yours.
spoon!
Joined: Sep 2002
Posts: 1,208
Likes: 50
From: Dousman, WI
Originally posted by lastRebel
Some of you people were better off not posting. It's really quite stupid of people to shoot down legit, and VERY POSSIBLE ideas just because they're unheard of thus far. I personally am looking to build a 3 rotor for nothing more than testing and the knowledge gained, and before certain people shoot this down too, I have my reasons, and they are not yours.
Some of you people were better off not posting. It's really quite stupid of people to shoot down legit, and VERY POSSIBLE ideas just because they're unheard of thus far. I personally am looking to build a 3 rotor for nothing more than testing and the knowledge gained, and before certain people shoot this down too, I have my reasons, and they are not yours.
So really, what the hell? No, you're not going to get shot down for an idea of making a custom 3-rotor... I have some ideas that are even wackier. So why so defensive?
Rotorhead
Joined: Feb 2001
Posts: 9,136
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From: Charlottesville, Virginia, USA
Originally posted by lastRebel
Some of you people were better off not posting. It's really quite stupid of people to shoot down legit, and VERY POSSIBLE ideas just because they're unheard of thus far. I personally am looking to build a 3 rotor for nothing more than testing and the knowledge gained, and before certain people shoot this down too, I have my reasons, and they are not yours.
Some of you people were better off not posting. It's really quite stupid of people to shoot down legit, and VERY POSSIBLE ideas just because they're unheard of thus far. I personally am looking to build a 3 rotor for nothing more than testing and the knowledge gained, and before certain people shoot this down too, I have my reasons, and they are not yours.
Joined: Mar 2001
Posts: 31,835
Likes: 3,232
From: https://www2.mazda.com/en/100th/
Originally posted by Evil Aviator
Welcome to the forum. Please feel free to read some more forum threads so that you can get a feel for the tone of this forum.
Welcome to the forum. Please feel free to read some more forum threads so that you can get a feel for the tone of this forum.
mike
WWFSMD
Joined: Jun 2001
Posts: 5,035
Likes: 4
From: SoCal
Damn, Hitman's setup looks nice.
What were the main differences between Mazda's 13G racing 3-rotor and the production 20B? Well, besides that you can't get a 13G.
Anything of note, like weight or length?
-Max
What were the main differences between Mazda's 13G racing 3-rotor and the production 20B? Well, besides that you can't get a 13G.
Anything of note, like weight or length?-Max
good question.. that is somthing i plan on dooing in the near future.... i'm also looking forward makeing a huge intake mani.. i friend of mine would make both if we could make a small profit... i saw a picture of a 3 rotor with duel 20b throttle bodies now that should breathe...
Lives on the Forum
Joined: May 2001
Posts: 5,097
Likes: 1
From: southern NJ
Originally posted by maxcooper
Damn, Hitman's setup looks nice.
What were the main differences between Mazda's 13G racing 3-rotor and the production 20B? Well, besides that you can't get a 13G. Anything of note, like weight or length?
-Max
Damn, Hitman's setup looks nice.
What were the main differences between Mazda's 13G racing 3-rotor and the production 20B? Well, besides that you can't get a 13G.
Anything of note, like weight or length?-Max
here is my 10a motor.
a PP 3-rotor 10a would be nice!