6 Rotor RX-4
01-12-2012, 12:09 PM
#30
It's over a year old thread ....
But FWIW I thought I would post a link to it ..
http://www.rx7club.com/showthread.php?t=935195
But FWIW I thought I would post a link to it ..
http://www.rx7club.com/showthread.php?t=935195
01-12-2012, 12:10 PM
#31
Registered
It wouldn't be that hard to find an ecu to run it if they build it much like a flat plane crank V8. In those engines they essentially have two 4 cylinder engines running a the same time since 2 pistons fire at the same time. This is why Ferrari V8's sound so neat. If they did this engine the same way by always having 2 rotors fire at the same time it wouldn't be any different than running a 3 rotor except that the ecu is firing and fueling 2 rotors at a time. It doesn't know that though. Not a very big problem to overcome. If they build the eccentric shaft where each rotor fires independently of another one then they are going to need at least 2 ecu's and a few bottles of aspirin.
My biggest concern for this is cooling. It is going to take several loop lines to evenly flow coolant and even then it will need a special separate water pump to do it. It will have to go dry sump to get the capacity and a larger radiator and oil cooler setup also need to be fit in. The exhaust will definitely be a nightmare but if they do the crank the way I propose they should then it would be nothing more than a dual exhaust with 2 headers that never collect with each other. Again, simple. Intake is open for interpretation and doesn't have to be complicated. Due to the length I personally wouldn't use just one throttle body and plenum.
There is a lot to work out with this whole setup. Fitting it in the car may be the easy part.
My biggest concern for this is cooling. It is going to take several loop lines to evenly flow coolant and even then it will need a special separate water pump to do it. It will have to go dry sump to get the capacity and a larger radiator and oil cooler setup also need to be fit in. The exhaust will definitely be a nightmare but if they do the crank the way I propose they should then it would be nothing more than a dual exhaust with 2 headers that never collect with each other. Again, simple. Intake is open for interpretation and doesn't have to be complicated. Due to the length I personally wouldn't use just one throttle body and plenum.
There is a lot to work out with this whole setup. Fitting it in the car may be the easy part.
01-16-2012, 01:40 PM
#41
Life begins @ 30 psi
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That is bad ***... just to see someone do what hasn't been done before. It will sound like armageddon when it idles too, because it will be running like two simultaneous 3-rotor motors.
01-17-2012, 03:30 AM
#42
Super Moderator
What about Tension Bolt Lengths!!
Another WOW!!!!!!!!!!!!
Another WOW!!!!!!!!!!!!
01-17-2012, 10:05 AM
#43
Registered
I can tell you with 100% certainty that if only longer tension bolts are going to be used to hold the engine together that it will not work regardless of the bolt or stud type used. This engine absolutely needs to have a complete structural cage of some kind built around it or it WILL come apart.
01-23-2012, 02:22 AM
#46
I can tell you with 100% certainty that if only longer tension bolts are going to be used to hold the engine together that it will not work regardless of the bolt or stud type used. This engine absolutely needs to have a complete structural cage of some kind built around it or it WILL come apart.
Or I hope they video the first start up...
01-23-2012, 09:35 AM
#47
This looks like it should work they will just be firing 2 rotors at the same time jumping down the line I would assume. My guess the timing would go something like this Rotors # in order ( 1, 2, 3, 4, 5, 6) 1 + 4 fire then 2 + 5 fire then 3 + 6. That's just my guess i could be wrong. But in all i want to drive it and watch everyone cry in my rear view mirror. LOL
