chenpin

Please vote and post something stating: reason, method and cost of your choice. (also for turbo and sc plz state type i.e. twin turbo, roots, etc)

Personally, I have no clue! :D prob keep it NA

Hercules

You forgot increasing rotor width.. that would be my choice.

chenpin

opps misunderstanding. i meant once you buy the RX-8 as it comes now and do aftermarket.

Hercules

Ah... no, I'll be leaving mine stock.

Leasing for three years, then trading in for a MPS RX-8 probably... just as long as they decide to keep it naturally aspirated instead of adding turbos/superchargers...

Throttle response on an NA car is like no turbo car, and I love that

P00Man

im prob gunna keep it NA as well.

i think that there should be one of these for what will be in the rx-7 to get that POWER to make it MEAN lol
________
EFFECTS OF NEXIUM

CraziFuzzy

Its all about the SC... pos. disp. only though... no centrifugal crap.. hehe... I just hope after buying the car, I can afford to install one... hmmm... already working on some rudimentary drawings... Might not be too complicated after all...

Sputnik

If I'm going to put some power to the car, I'd much rather go with a turbo, personally. I wouldn't be looking for mega-boost and mega-horsepower without decreasing the compression ratio (and other appropriate internal upgrades), so I'll be looking at around 10 psi at the most, and I'll go with a single medium/small sized ball-bearing turbo which should offer decent response and spool-up time.

I'd shy away from either type of SC, because the broad rpm range of the Renesis would limit their effectiveness. I would shy away from tri-rotor versions for the Renesis unless the car was a pure killer power project car, and then I would turbocharge it also.

Mind you, depending on what I had in mind for the car, I would probably be happy with the car as it is. For an around town daily driver, I'd probably keep it as is. In fact, since most exhaust and intake upgrades increase upper rpm WOT performance at the expense of lower rpm part throttle performance, I wouldn't expect that I would spend the money on doing those mods for an around the town car.

---jps

AbusiveWombat

I think the 3 rotor is the way to go from the factory but the thread said aftermarket. I love an engine that uses engineering to get horsepower and torque rather than the easy route of forced induction.

So if it's got to be aftermarket...supercharger. Personally I just want a bit more grunt down low.

lefuton

i voted turbo, nothing huge, i figure somewhere like 7-8psi or something like that at around 7k rpms would be kind =)

m477

A 3-rotor RENESIS would kick major *** - 370hp and 240tq.

The only problem would be keeping the car balanced, you'd have to move the engine even further back to accomplish this. So a 3-rotor would probably be better suited for a car like the RX-7 with its longer hood.

Also, it would have to come from the factory, since 3-rotor aftermarket conversions are insanely expensive. As for aftermarket, turbo would probably be the best route to more power...

MikeW

What about gearing?

I will replace the 225/45 18 with 225/40 18's.

That is about 5% shorter gearing.

N20SA22C

You Forgot my personal favorite and by far the most Hp/$ is N2O. I will add, header, presilincer and exh(single), dual CAI(or 2 t.b. into one), Ecu reprogram to 10-11k, The car will make 295-300 bhp and then have a 60 shot plumbed just in case a quick 350z or somethings comes along. It is also easy to de-install if there is a problem. he he. I do not want boost all the time, I also do not want my rotary ingesting hot pressurized air in San Diego all the time. You also get the fun of a N/A car the rest of the time.

Kyle Lancaster--Double Agent Salesman

amgtortoise

I had 2 x FD3S (Silver auto & Black 5 spd) before & sold them cos of complications & other factors.

I'll go for 3-Rotor all-motor. Cos it'll last longer & I would not have worried about changing my oil or dried vacum hoses. Also, an all-motor 3-rotor will be so much more rev. happy, responsive & torquey than a force fed 2-rotor in all around driving. The bigger displacement 2-rotor dream will just cause the engine to be slower reving & not having close to the attributes of the 3 rotor.

If some of you have ever driven a JC3S... you can smoke the tires by powerbraking it at 2000 rpm. That my friend sold me that a multi rotor it's the way to go. Potential of getting 1000hp in a 3 rotor it's awsome if forcefed.

A 2 rotor forcefed it's up to 400-500hp while keeping it somewhat reliable. And, gosh oil changes it's a must at all times.

Mazda it's going in the right direction, keep the rotary all motor & if the consumer turbocharge it, just void the warranty. That's how I would do it.. since the RX-7 failed big time in the U.S. since they wanted to be the 1st company with 'sequential turbo charger' in a rotary & made it easy for consumer tampering....and also, other factors like: 1994-5 japan market blow, poor training, EFI, re-calls, etc.

TreknMazda

If I believed a brand new car needed to be modified as soon as I got it, I wouldn't. Mine will stay stock because I think I'll like it just the way it is(will be):D

Speculation on getting more HP without ever driving the car seems way premature, IMHO. But hey, whatever floats your rotor

chenpin

Ahhh, you guys just reminded me about something. The Renesis in the RX concept was tuned to 280 hp. Now I assume that is the same engine we're getting so it would be possible to tune it that level right? Maybe ecu, and other changes, but it is possible right?

Any opinions on this and possible effects of such a change?

EDIT: Nevermind, I just saw the thread on this topic.. hehe...man, i am just to implusive :p

Donny Boy

Forced induction seems to boost everything, except engine life. Better go with 3 rotors or bigger rotors.

lefuton

it would seem to me if you went 3 rotors you'd need a the eshaft offset by 120 degrees instead of 180 (not that i know a whole lot about the 20b) but doesn't that also mean you can't rev as high w/ 3 rotors?

i'll probably wind up throwing a turbo in, but by no means right off the bat...i'm also not really expecting any sort of bolt on kits as the renesis does seem a bit cramped for something that easy. figure in a few years, if the engine proves reliable and after the easy mods like intake/exhaust/lower it with ground control or something like that =p

come to think of it, would probably opt to port the side housings before turbo'ing it. don't get me wrong, i like a well tuned n/a motor but a turbo totally fits my style of driving, i can deal with turbo lag putzing around town, but to get this baby to scream when i want... now that's where i have my fun =)

amgtortoise

All Mazda 3-rotors have a 120 degrees offset already since the 80's.