is it possible to add a rotor to this engine? like possible make it 2.0L 3 rotor. cuz i seen a video of this toyota corola with an engine swap of a 7 motor with 3 rotors in it and if you can then would it be efficiant and what would be the parts need to make this work?
thanks for all the answers....

 

There is a 3 rotor engine (known as the 20B). It is found in the Cosmo, which is/was not sold in the US. So, in that case, you would not need to add a rotor to the FD engine. Just swap the Cosmo engine into the chassis.

You can add another rotor to the FD engine. But that costs money.

Do a search for keywords:

Cosmo engine and 20B. That will help you get your answers.

BTW, there is a 20B section in this forum. Find it and check the archives section. You will learn a lot.

Also, please check out the newbies thread near the top of this page. It will direct you to some very useful links. (It may help you w/ the 3 rotor question).

Also, check out www.3rotor.com

 

Moved over to the 20B forum...

 

With a machine shop and a great deal of skill you can make just about anything. Here is a link of a custom-assembled 3-rotor engine with some parts made from scratch.
http://www.hitman.hm/rx7.htm

 

Here's a theoretical question then, for the experts...

Now I'm aware of the 4 rotor engine used in the 787B, but what are the technical challenges when making a 4 rotor engine out of 2 smaller 2 rotor engines? I've seen a shop take 2 13BREW engines and mate them together and was wondering if a small shop can do it and still have it fit in the engine bay, why isn't this done more? Is it too much of a challenge to fabricate an eccentric shaft to power the 4 rotors, or is that just one of the many problems that need to be overcome to make this engine work? Are the power gains negligible when in comparison to what you could get with a boosted 13B or 20B? Or is the fuel consumption just too great to make it a feasible concept?

The way a rotary engine looks, it almost looks like you could just keep adding more rotor housings and more rotors to make a longer and bigger engine. What's stopping someone from mating two 20Bs together?

No flames please, just asking out of curiousity and not out of some dumb notion of doing it without knowing the amount of financial and technical commitment such an undertaking would be...

 

Technicaly nope, there is no end to how many rotors you can add to an engine. it just gets expensive real quick. If you seach a couple of months back there was a thread about some extreamly large rotary engines (6 rotors i belive)

 

Was that in this forum? Thanks!

 

i think this is the thread

https://www.rx7club.com/forum/showth...ong+box+pickup

 

Thanks CrackHeadMel! Good reading, if it weren't for the pissfest...

 

http://www.hurleyrotary.com/ used to have a picture of a 6-rotor motor.