Bigger Engine
I realize that the rotary is sectional heres my question I have two 13b's is there any way to build them together to have a quadruple lobe engine i understand alot of fabrication would need to be done .
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That would be a psuedo R26B, and it has been done. You need a custom multi-peice eccentic shaft and manifolds to say the least.
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whoa i didnt even know about something like this... thats some crazy stuff...
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4 rotor or maybe 3 rotor. You'll probably need the 3 rotor intermediate plates.
Some people have estimated over 25k to build an engine like this. I have only seen one 4 rotor and it was at Sevenstock 6 in a red FD. Sorry to say this but if you have to ask then don't. Also to help answer another Q. A 3 rotor will got you 10k at the minimun to put into a FC. |
Grannys speed shop did a motor like this, you should contact them, just search for "grannys speed shop" in google.
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i remeber someone posting a vid of a white fd from japan with a 4-rotor it sounded badass. more power to you if you want to take it on as a project. just dont count on getting it in a car anytim soon and i hope you have engineering level design and fabrication skills. good luck tho it would be realy cool to see the approach to making one.
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Have the two engines totally seperate, but join them together via a seperate shaft between the front plate, and the rear plate
It'll be huge, but you'll have your 4-rotor engine :D |
A school bus or a boat would be good candidates for two 13Bs hooked together. :D
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Or if you were to use a custom frame and shell to put them in, you could always use two engines, two gearbox's (with linked shafts) and have split diferentials at the rear - one engine powering each rear wheel
well, its different!!! |
I think the 4-rotor FD you're talking about is from Scoot. I've still got the vid and it sounds like some mutant bike engine. :D The other one can be found here Granny's and includes an excellent tech writeup on how they did it/how to do your own.
Also, Blue TII recently posted a couple of threads on an Australian 4-rotor PP FC. Talk about badass! Remember that a 4-rotor will be LONG and HEAVY! You won't fit that in any RX7 engine bay without EXTENSIVE modifications. |
Let's figure out an easy way to build a FWD rotary. Put one 13B up front, and one 13B in the rear hatch of a small FWD car. Link both shifters, clutch cylinders/cables and throttle cables together. Viola! AWD 4 rotor powered econo box. :D
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or get the entire drivetrain from a 4WD car, and lob a rotary engine on it
You won't fit that in any RX7 engine bay without EXTENSIVE modifications. |
dam... a 3 rotary engine's good enough for me. but if u have the money, then by all means go for it.
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I'd love to make a 4-rotor like Granny's. It'd look sweet in the back of my trike!!!
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Scoot 4-Rotor FD (pictures, specs, videos)
https://www.rx7club.com/showthread.p...hreadid=261572 Here's another site that's around, but pretty slow progress and not much to see. www.4rotor.com Jim Downing has been doing 4 rotors for years I think. Jeff Bruce (new zealand, or is it australia?) makes custom eccentric shafts. He makes the shafts for many top drag racers. A 2 or 3pc shaft is another option. That's all the info I got. $$$$$$$$$$$$$$$$$$ |
sorry all have been away for a while thanks for the help I have a friend at a machine shop that is going to help me but i still need to figure out how to fit this beast into my car
any ideas on that one (p.s. like the four wheel drive idea!) |
The AWD idea? Me too. :D
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good luck, I hope your machine shop guy gan make a good strong e shaft for it that should be the biggest problem
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