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3 rotor renesis.

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Old 06-17-2020, 12:33 PM
  #26  
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Originally Posted by UnknownJinX
You need this picture...


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LOL! Sounds about right when pursuing a 3 rotor Renesis build. The cost would be mainly building the engine then getting it in the car and running. I still don't see the sense of it, any extra power it could potentially make would be cancelled out by extra weight and mods needed to even get it to work. Doesn't seem worth the effort when you can just do a 13b-REW swap and gain so much more power with far less time and expense. The porting alone will be a nightmare to deal with when trying to tune it. Just seems like a waste to me. Also, didn't Racing Beat build one for the Furai and the car burnt to the ground?

Last edited by CaymanRotary; 06-17-2020 at 12:54 PM.
Old 06-17-2020, 09:07 PM
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the Furai was already discussed in the thread, which implies you aren’t even reading or keeping up
Old 06-17-2020, 10:12 PM
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Originally Posted by TeamRX8
the Furai was already discussed in the thread, which implies you aren’t even reading or keeping up
You never mentioned the car burned to the ground. Another reason why it's best not to try to make a 3 rotor renny.

Last edited by CaymanRotary; 06-17-2020 at 10:17 PM.
Old 06-22-2020, 03:20 PM
  #29  
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This is a big yikes. Mazda spent millions of dollars getting everything out of a N/A two rotor, but you’re going to design a 3 rotor Renesis?
That’s what you’re implying
Old 06-22-2020, 05:52 PM
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I never mentioned the Furai burning down because it's irrelevant to the discussion. The comment about it being another reason not to do this is grossly misinformed. It’s not any more a fire hazard. The Furai was using straight ethanol fuel. Which is extremely flammable, particularly if there’s a leak. As to what actually caused the fire is unknown and it was being tested at a track when the incident occurred. Part of the issue was it being a low key private test for a tv show and they weren’t adequately prepared for a fire situation.
Old 06-25-2020, 05:37 AM
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Originally Posted by TeamRX8
What you still don’t get is that with a Renesis, the center rotor ends up with significantly smaller intake and exhaust ports than the two end rotors. There’s a difference between reading a few things vs. understanding how things work. Just like your output results comments. Even the other guy you’re talking to there still doesn’t have that right either.

It’s only X” longer, except that means it no longer fits where the 2-rotor is. Again, you talk and talk, but you don’t understand. The motor mounts won’t line up unless you move everything to the rear. More talking, no understanding. Not saying it can’t be done. It was already done, except in an FD3 which is an easier fitment than an RX8. It’s not being pursued for good reasons you still don’t get. There aren’t any simple solutions to the issues. The only solution to the Renesis issue is casting and machining new custom plates.

Otherwise you’ll spend the same absurd amount of money to have a subpar excuse of a 3-rotor engine than as if you’d built a proper 20B that will make 350 hp at the rear wheels. You’re not even straight on flywheel hp vs. wheel hp. Most of the 6 port engines on here would probably be under 180 wheel hp if they got on a dyno.

Q: Why are you even convinced to use a Renesis?
A: Because you’re reading a bunch hyped up stuff that doesn’t directly translate to reality.

They stopped making this car/engine 8 years ago. That was after an 8 year production run. Did you honestly expect to swagger in here and show everybody how it’s done? Like nobody else ever had the idea? There’s a lot of things that were done. You don’t see it plastered all over the forum because the results aren’t good. You already look silly talking on without understanding the basics. Most people on here can’t even afford to spend what a proper rebuild requires on a 2-rotor. You won’t be spending 1/3 more than that.

More like $25,000+ USD fully installed for a subpar dyno result. That’s called having more money than sense. You’ll have to rework the drivetrain, it will need a stronger transmission, bigger oil coolers/radiator, subframe/motor mount/steering modifications, a custom intake/exhaust system, custom oil pan, a custom oil pump but everybody used the 2-rotor one, a custom water pump but everybody used the 2-rotor one, an aftermarket ecu, a proper wiring harness/ignition.

I didn’t get into the actual custom engine build modifications, which again nobody supports a 20B Renesis so you’re on your own. The parts don’t just directly swap over, though some can be used with proper modifications if you understand what they are. Some people would say it needs stronger differential and axles, but you won’t have to worry about that because with a Renesis 20B the output level won’t be there.

but it’s been explained to you properly multiple times now. There are other dreamers on here who will be quite pleased to talk nonsense with you all day long though. Have at it.

you can start here on your adventure quest for reality though:

https://www.rx8club.com/series-i-tec...ilation-77031/

.
your very negitive arnt you lol i still dont see what the issue is with building a 3 rotor renesis.
i read what your saying but have you actually done any research or is it just your opinions?
the engine will be cheaper to build than a 20b. Fit in the engine bay easier than a 20b. It will bolt to the factory mounts. No upgrades are needed to the drive train.
i can buy the e shaft off the shelf.
The exhaust ports are all the same size on the inside of the irons.
It looks pretty easy to me
Old 06-25-2020, 06:06 AM
  #32  
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Old 06-25-2020, 06:21 AM
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Originally Posted by SmallPP
your very negitive arnt you lol i still dont see what the issue is with building a 3 rotor renesis.
i read what your saying but have you actually done any research or is it just your opinions?
the engine will be cheaper to build than a 20b. Fit in the engine bay easier than a 20b. It will bolt to the factory mounts. No upgrades are needed to the drive train.
i can buy the e shaft off the shelf.
The exhaust ports are all the same size on the inside of the irons.
It looks pretty easy to me
The issues have been pointed out more than a couple of times now. If you don't see them, I don't know what to tell ya. Go ahead, find out the expensive way?

​​​​​​What research have you done to hold opinions on how easy this will be to build and fit?

Last edited by Loki; 06-25-2020 at 06:26 AM.
Old 06-25-2020, 08:14 AM
  #34  
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Originally Posted by SmallPP
your very negitive arnt you lol i still dont see what the issue is with building a 3 rotor renesis.
i read what your saying but have you actually done any research or is it just your opinions?
the engine will be cheaper to build than a 20b. Fit in the engine bay easier than a 20b. It will bolt to the factory mounts. No upgrades are needed to the drive train.
i can buy the e shaft off the shelf.
The exhaust ports are all the same size on the inside of the irons.
It looks pretty easy to me


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Old 06-25-2020, 08:23 AM
  #35  
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I might put an extra cylinder on my Camry
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Old 06-25-2020, 09:05 AM
  #36  
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Originally Posted by SmallPP
your very negitive arnt you lol i still dont see what the issue is with building a 3 rotor renesis.
i read what your saying but have you actually done any research or is it just your opinions?
the engine will be cheaper to build than a 20b. Fit in the engine bay easier than a 20b. It will bolt to the factory mounts. No upgrades are needed to the drive train.
i can buy the e shaft off the shelf.
The exhaust ports are all the same size on the inside of the irons.
It looks pretty easy to me
If being realistic and helpful means negative then there is nothing more to say. As Loki said, find out the hard and expensive way if you just like to deny common sense.

If you think it's easy and cheap, go right ahead. Just don't expect sympathy(since people have tried to warn you multiple times) when you become one of those "ran out of money to complete the swap" examples we see on Craigslist.
Old 06-25-2020, 10:12 AM
  #37  
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While it is probably equally difficult and not time/money/aggravation worthy, I have thought a 4 rotor Renesis makes more sense than a 3 rotor, at least initially, The port design and intake system seem to make it more sensible to have even numbers of rotors for any Renesis build. That said, I will not be volunteering.
Old 06-25-2020, 11:29 AM
  #38  
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This dude's username and the way he types point to him being a troll or underage. Probably should just abandon the thread at this rate.
Old 06-25-2020, 01:05 PM
  #39  
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Originally Posted by kevink0000
While it is probably equally difficult and not time/money/aggravation worthy, I have thought a 4 rotor Renesis makes more sense than a 3 rotor, at least initially, The port design and intake system seem to make it more sensible to have even numbers of rotors for any Renesis build. That said, I will not be volunteering.
Me either. This car is really meant to be enjoyed close to stock form. If I wanted a drag car, I'd just modify a Honda to make 700+ HP for half the cost of this 3 rotor Renesis Idea.
Old 06-25-2020, 01:32 PM
  #40  
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Originally Posted by CaymanRotary
Me either. This car is really meant to be enjoyed close to stock form. If I wanted a drag car, I'd just modify a Honda to make 700+ HP for half the cost of this 3 rotor Renesis Idea.
well idk about 100% stock. at least decat them. either way this thread is ******
Old 06-25-2020, 02:58 PM
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Originally Posted by 200.mph
well idk about 100% stock. at least decat them. either way this thread is ******
That would count as "close to" yes. Mine decatted and I love it personally. Dogshit thread though yes. Gonna stop bumping it now. By the way, TeamRX8’s first comment is all you need to read.

Last edited by CaymanRotary; 06-25-2020 at 07:44 PM.
Old 06-25-2020, 07:04 PM
  #42  
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^^there’s no need for profanity newb, not that you contributed anything useful any way.


the truth is what it is, your smallpp feelings about the truth and labels for it are irrelevant compared to the reality of it.

.

Last edited by TeamRX8; 06-25-2020 at 07:37 PM.
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Old 06-25-2020, 08:31 PM
  #43  
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Kickerfox, is that you?

https://www.rx8club.com/non-rotary-s...thread-241226/
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Old 06-25-2020, 08:35 PM
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Originally Posted by BigCajun
LOL oh man... this is pure gold!

"A swap will cost me less then $1000. By the way, it's $720 anual savings per 10,000mi@3.20/gal."

-Kickerfox
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Old 06-25-2020, 08:48 PM
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Originally Posted by SmallPP
your very negitive arnt you lol i still dont see what the issue is with building a 3 rotor renesis.
i read what your saying but have you actually done any research or is it just your opinions?
the engine will be cheaper to build than a 20b. Fit in the engine bay easier than a 20b. It will bolt to the factory mounts. No upgrades are needed to the drive train.
i can buy the e shaft off the shelf.
The exhaust ports are all the same size on the inside of the irons.
It looks pretty easy to me
I've seen it explained to you multiple times on multiple forums ............... is it just not sinking in or are you trolling ?
Old 06-25-2020, 08:53 PM
  #46  
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two peas in the newbs-who-never-progressed pod (not you B, snuck in under me, lol), thanks for your completely irrelevant contribution to add clutter to the growing junk heap of unnecessary references to sex toys and inane profanity.

as for my opinion on whether to build one or not; no, I’ll never attempt it with the understanding I have now. Though again, I did consider the idea a decade or more ago. To sum it up perfectly; a smart man learns from his mistakes, but what separates being wise above being smart is the wise man’s ability to learn from other people’s mistakes.

Somebody please put this thread out of it’s misery already.

.

Last edited by TeamRX8; 06-25-2020 at 09:14 PM.
Old 06-25-2020, 09:07 PM
  #47  
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The concept of discussing this is fine... nut or is becoming a behavior problem
please leave the personal attacks and comments out of the thread or it will be closed.

To the OP... just because you dont like the replies doesn't change the fact this is infinitely more complicated than you think

Old 06-25-2020, 09:09 PM
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Wow, this thread went downhill fast.

OP: there are several members here with extensive knowledge of the Renesis trying to explain why it won't work and you seem convinced it will though you have not presented much in the form of research, data, or experience.

Guys, no thread crapping. I will leave this thread open (for now) should the OP have some progress on his build or want to ask technical questions.
That said OP, I highly suggest you take some time to truly consider and research this project as it is not as easy as you believe it to be. Much to learn you have.
Good luck, keep us posted
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Old 06-25-2020, 10:38 PM
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Originally Posted by Jedi54
Wow, this thread went downhill fast.

OP: there are several members here with extensive knowledge of the Renesis trying to explain why it won't work and you seem convinced it will though you have not presented much in the form of research, data, or experience.

Guys, no thread crapping. I will leave this thread open (for now) should the OP have some progress on his build or want to ask technical questions.
That said OP, I highly suggest you take some time to truly consider and research this project as it is not as easy as you believe it to be. Much to learn you have.
Good luck, keep us posted
This is fair. If the OP is serious about this build I would love to see updates and progress. I'm all for keeping this thread as constructive as possible even though we all know where this is going...

Last edited by CaymanRotary; 06-25-2020 at 10:41 PM.
Old 06-25-2020, 10:50 PM
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Originally Posted by TeamRX8
two peas in the newbs-who-never-progressed pod
.
And Team, you may not like me but I'm not going anywhere. Dont really care about what your opinion of me is or what I did to offend. I am no "newb" though. Have 4 of these RX8's all still running and driving. That's more than most can say.


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