Renesis vs tuboed 13B
 

i was talking to a buddy of mine about rotory motors and he seriously seggest i spend the extra money and buy myself a RX-8 renesis rotary motor to swap in instead of the 13B. now i did some reserch on this and I came up with the renesis 235hp NA.... compared to the turboed 13B running 255.... after some calculation with the HKS turbo kit i happen to have i could be pushing 350hp out of the RX-8 motor... now everything looks good and i kinda like the idea but im worried i overlooked something, anyone else have ne insight that may help my descision? Yay or nay... help... lol

your buddy donmt know shit about rotaries
if you have to ask, the swap is too complicated for you

just go with a 13BT,,, 87-91 turbo engine, your pick.

To add, turboing a 10:1 compression motor doesn't make it happy either.

well as for the swap from 13B to renesis... its essentially the same motor. same engine mounts and everything. the only thing that i could find diffferent bout it is the exhaust maniford was moved from the rotor housing to some where else... and obviously ide have to change some stuff to achive lower compression, no problem... im just curious to know wether or not ne one has hurd ne problems arising with the renesis motor that i may have missed.... engine swap, easy... ill just have to fab my exhaust a lil bit, no problem... and due to a few minor ajustments by mazda it is a but more reliable and tuner friendly than the 13B.... need insight

the 13bt produced 186hp for s4 and 200hp for s5....... the 13b-rew produced the 255hp that you saw....the rew motor came out of the 3rd generation rx7..and is too much hassle to install into an fc....... your better off doing a 13bt (the turbo motor out of the fc) swap, which is relatively easy for an experienced person..... good luck w/ whatever descision you go w/

*Search* and then tell you buddy he's a dumbass.

for the money you would spend buying, installing, and turboing the renesis, you could build one hella badass 13bt or even 20b.

also, i think this has been covered in about half-a-dozen other threads, but with a post count of 4 i guess you are kinda new at this.

lke i said before, ive done lots of theory but now that i have my hands on one i feel kinda reserved to do nething to it.... not really sure how to go bout it... but i guess i should't be talking to my friends bout shit... all domestic guys and when they want power they just go bigger.... my buddy said "want more power? do wut we do, its crate time" now being an ex-domestic guy (owned a 69 dodge charger hemi 440 r/t) i entertained the thought for a bit and like i said did some research... but now that i relize imports rnt like that im kinda lost, bigger turbo? new rotor and seal? porting? where to start....

Um, no. There's NOTHING in common between the older 13B and the Renesis. EVERYTHING is different, especially the engine mounts. The older 13B for the 2nd gen mounts on the middle iron. The drivers side mount connects to the lower side of the iron, the passenger to the bottom through the oil pan. The Renesis mounts are higher on the front housing. The passenger engine mount even surrounds the exhaust manifold.

Putting the Renesis into the 2nd gen is a major fabrication undertaking. You need to fab engine mounts, transmission mounts, fab the exhaust, deal with the cooling pipes. And then it needs to be all wired up...

Whoa...You need to stop listening to this friend, and start doing some basic research.

Decide what your REALISTIC (from your other thread, it sounds like your goals are not reaslistic) goals are and then forumulate a plan. The best way to do this is to READ and LEARN the basics before you start posting.

dude, just do it. it would be something different, i would want to just see what happens

You will see a garage sale in the Parts For Sale section.

Aaron is right. Figure out what you are trying to acheive, set a budget, based on those goals, and then start cracking.

A Renesis swap is reinventing the wheel at this point. If you go this route, you are going to be in unchartered waters. Additionally, when it is all said in done, you will probably be able to acheive the same for lest cost with the tried and true method. I.E. the 13bt.

Holy shit I am dizzy from shaking my head and laughing.

1. Your friend don’t know shit about rotary’s.
2. How the hell do you plan on controlling the RENI motor????? Good luck with EFI on that one
3. It would be cheaper to put a 20b in it
4.You seem to not know how the compression work and the internal differences of the motor. RESEARCH THAT.
5. There are very few RENIs putting down over 350 and this is mainly due to the EMS controlles and factory coils being poo. Where there are many 13bT's putting down 400 500HP

I will put it out there and say if you perform this swap you will be selling everything off and taking a second mortgage out on your home.

yeah right... even though a 440 hemi doesnt exist... must be 1 of 1, 1 off special made, huh
and you swap crate motor for more power?
geez... you have a LONG way to go to learn about cars....
first off, dont pretend to be an ex-domestic guy... it is obvious that you dont know much... or any

to swap a 13b to renesis is a big mistake because the rx8 was not built for the same thing as the 7 and the renesis engine comes lower horse power stock but the good side is its easier to find parts my opinion

says the guy who is looking for a head gasket on his rx7

I personally know a guy who ran a 13.1 on his 88 T2 with stock ports, turbo (s5), and intercooler. Look on the Rx-8 forum and you will realize that getting power out of those motors costs big dollars for small gains. They simply weren't designed for forced induction.

Check out http://www.rotaryengineillustrated.com/index.php

:rofl:

that was a mistake about the head gasket

A big mistake. And until you realize WHY it does not, you should not try to give advice.

Don't do a Renesis swap, especially if you think you can just "easily" change the compression. You can't. To achieve lower compression, GOOD LUCK milling a T2 rotor to be able to work with side ports.

If you seriously think swapping an engine is uber simple, get a 20b. They will be CHEAPER then buying a Renesis, by about 5000 dollars, and have 50% more potential. It is MUCH "easier" to swap in, not hard to control with an EMS, and accepts turbo's!

But with you're current knowledge, don't swap an engine.

i didnt say it was simple

im not being rude..... but you have never owned an fc, you are only 15, and your just starting to learn about rotaries.... so read ALOT more before posting w/ tips on what someone should do.....

and it isnt easier to find parts for a renesis..the renesis is a new motor, so manufacturers are just starting to come out w/ parts for it... whereas the 13bt, 13b-rew, and 13b-re have been around for more than a decade, so there are endless parts available for them

haha they allways pick on the newbies.... yeah id try to search of serach for websites explaining things, howstuffworks.com search thres soooo much info you could never learn everything!

boy i tell you a renisis in a FC would be sick.... prolly 15 grand or more tho....

get a s5 t2 engine and a haltech, ive ridden in my buddys rx8 its quick, but still would not even compare to my car when it had the stock turbo at 8 psi. t2 engines will make plenty of power, but if u get one check the head gasket and make sure its not leaking. good luck w ur project

Yeah, I didn't check mine when I bought it, and found out later, the guy was running without a head gasket the whole time!!

(Note: Heavy sarcasm)

please for the love of god stop posting and read, as for this renasis thing go 13BT
they cost 1/5th as much and can take more power in the end. you loose the novelty but you save a ton of money.

Im getting aftermarket racing cams for mine! the shops only chargen me 600 bucks to install them too! im so lucky :allcho: