Hey davefzr, and others. Today I have talked with Tim from SFR, Yes the numbers are still correct that I have posted earlier and the timing of release is still Nov. Tim said the kits will take approx. 4-5 weeks to ship. Also the Rick Shaw ECU will lag behind just afew weeks longer. The dyno info should be posted shortly, Tim said.. I can't wait to see for my own eyes.

Also i have talked to Tyler from Pettit, Still talking about the first of the year, when I asked if possible sooner he said maybe around Xmas... I really like the system too, But I don't like the fact that it runs at 6psi and when the auxliary intake ports open at 6250 rpm's the Boost drops to 4psi... And the 8psi kit it will drop to 5 psi. Tyler did say that they had to make a New intake out of aluminum for pressure and better mounting reasons. But I like that it makes power across the band, just wish it did'nt have this problem with boost at the 6250 rpm.. I will probably buy the SFR once I see the Dyno results..

Dumb question....why can't they keep boost up when the auxiliary ports open?

mazda rx-8 turbo help
 

Someone told me that you cannot put a turbo in a rx-8 because its rotary, would it have to be a different way of putting in the turbo ,will the turbo not be as effective as it would be in other sport car engines or is this person just a dumbass???.i wanna get an rx-8 because i love the look and feel of it i got from the test drive but i also need it to make cash so i need to know if there is any real set backs the rx-8 might have??(be honest)Also i was thinking of gettin a 350z but its at a steep 33k if i get the rx-8 at 25k would the 8k that i saved be able to up the rx-8 enough to woop the 350z(i'm thinking yes if used the right way ,just want fast verification).Also the veilside kit for the rx-8 looks frickon nice.

the person is a dumbass and how would you make cash with the car? your name suggests it would be in drag race style street races. if so, imho, you need to look at a different car.

Not sure if it's the right answer, but i'm thinking maybe their SC isnt sized properly for the application and it's dropping boost because the car is sucking more air than the supercharger can produce at high RPMs with the aux ports open.

Dumbass Extreme

Abel Ibarra’s run's a 1,500 hp 3-rotor RX-8 with the biggest turbo that I have ever seen :D

Hey ajax, You might be right. But I'am wondering if the way the auxilary ports kickin at this rpm, if there is'nt going to be this drop in pressure from any SC or Turbo until it can catch up.I really want to see all the Dyno graphs from Pettit and SFR to see if there is this drop or lag, kind of a miss step...

that thing could suck my head in :eek: :D

No, there will not be a pressure drop with a turbo when the aux. ports open (I'm planning on just bridging them all together anyways). An ever so slight closing of the wastegate, via the boost controller, will offset the opening of these ports. A properly sized turbo on an Rx8 should be capable of providing far more boost than most street applications will ever need. Therefore, you will have no problem keeping the pressure right where you want it. 10 psig from 2800 rpm's, all the way to redline, sounds good to me.

I don't know who told you that you can't put a turbo on a rotary engine but apparently they (and you) have been in a hole of the last 15 years. Rotary and Turbo have been synonymous since the late 80's. Rotaries have amazing exhaust gas velocities making them perfect for the application of a turbo charger. Rotaries are far less efficient than piston engines; the majority of this lost efficiency goes right out the tail pipe in the form of heat and moving gas. A turbo charger greatly increases the efficiency of the motor wile increasing power along the way. My highly modified single turbo third gen runs 11's and still gets better gas mileage than a stock Rx8. Go put that in your ass and smoke it.

As for "wooping" a fairlady, how old are you? Are you even old enough to drive? I guess the answer to you question is no, you would not be able to "woop" a 350z. It sounds to me like you would need a step by step to change your oil, modifying and maintaining a FI Rx8 might be beyond the scope of your mechanical ability ;) , and in stock form, an RX8 is no match for 350 at a stop light.

Yikes...

This wasnt the kind of update I was looking for from them.... :eek:

RX8-Turbo system - $6250
Ball-bearing turbo option - $600
304SS Cat deletion pipe - $399
TSI engine management option - $1349

So now it's 9000 w/o install.
Sad.

Well you dont have to spend the extra 1000 for the ballbearing and the cat..

For the turbo illiterate(me), could someone explain the effect of the ball bearing option? I know I've read about ball-bearing turbos before, but never really knew exactly what that meant. Thanks.

Ball bearing turbos spin easier. It reduces spool up time (turbo lag). This lets you build boost faster. The faster you build boost, the faster you accelerate. It also helps keep the turbo spooled between shifts.

Since a centrifugal supercharger is pretty much a belt driven turbo, is it possible to have a ball bearing centrifugal supercharger? or am I misunderstanding the setups here?

I think you are a little confused. I'm sure they have ball bearings in them but their speed is firectly proportionate to the engine speed. A turbo's speed isn't. It is spun from air. The easier you can make it spin, the more leverage the air has on it. A smoother turning supercharger would translate into less power loss through the belt system but it wouldn't affect lag. You'd still build boost at the same rate.

Yea, I'm not exactly an informed person when it comes to FI. Thanks for the info rotarygod.

Yeah, the notion that this kit is going to be $8K before install is rough. I was hoping maybe an introductory price of $5200 for the turbo, $600 for the ball bearing turbo upgrade, and $1200 for the Ric Shaw ECU upgrade. That is still $7K but way better than the $8K or $9K we are looking at right now. I might have to wait for the Greddy kit, or look at a Petit Racing or Blitz SC.

I've seen you around the forum a lot, have you looked at Hymee's or Richard Paul's projects? To me those 2 look the most promising. Both superchargers, but you said you might be looking at blitz so I figured I'd throw them in there. Be patient and you will see good results, in my opinion don't be the guinea pig. Wait and see what other people say about each system, then make your decision. The SSR or SFR or whatever it actually is might be worth the 8k, who knows?

Aoshi,

I would definitely like to check out Hymee's unit, as well as the Axial Flow unit. In regards to SFR's unit, it really looks nice, but at some point no matter how good the kit is, they become financially unfeasible to me. $8K-$9K is just too much, even if it gives me 120 whp. I was really looking for a $5K kit, or maybe a bit more if it can get me more than 50 whp, but once you get to $8K+ it just prices me out of the market. Everybody has different levels that they are willing to go to get hp, mine is about $7K. I'll check out Richard Paul's unit. Thanks.

I'll second that one. I agree, you pay to play, but if the system costs that much without the engine computer than I think they have priced themselves out of the market. I have no doubt that it is an expensive kit to produce but simple economics are not on their side. I think a package price of anything above 6k would slide them so far up the demand curve that they would be nearing the y-axis (not a good thing). That pricing is too bad, I really like the construction. It will undoubtedly be well beyond the equilibrium price once other suppliers get on the market with their kits though; Trust knows Americans aren't willing to shell over that kind of dough.

Economies of scale suck when you’re the little guy.

Man that is one great looking kit. I can't wait till someone here gets their hands on one. I really wish they would let one of us test it at a discount. I can always dream can't I.:) Oh well looking forward to seeing how it turns out.

-Boxcar

And I as well, looking forward to solid and respectable FI kits to empty savings for...lol,please don't tell the wife

Maybe all this hard work on the 8's turbo bankrupt them :) jk....

Their site is down... Anyone have any updates on this? Maybe they are updating their site to post all of the information we could possibly want about their turbo kit for the 8...

Sure :)

dave...wishful thinking!! Ohh I hope you are right!!

Davefzr, I checked also and SFR site is down, I hope this means that they are updating their site for the RX-8 Turbo...This is about the time Tim has told me it would be out. I would like to follow-up with a phone call to see if this is true but I won't be home till tomorrow, Does anyone have their Phone number so I can call Today..

Still down.. I wonder whats up...

Davefzr, I don't know. I can't find their number.. Please anyone with Tim's number from SFR let me know so I can call to find out....

I think this is them... Found them on Yahoo Yellow Pages...

Speed Force Racing
(619) 328-4012 10149 Prospect Ave
Santee, CA Map 13.1

Flash, Update, just got off the phone with Tim from SFR...
1. Their system crashed should be up and running by tomorrow.
2. The Turbo system will be posted on the web by beginning of next week, with dyno and video of the RX-8... sounds good.
3. System is ready to buy right now, with about a four week wait, numbers still the same as I posted earlier- 300hp. at wheels & 250 lbs. torque at wheels.
4. Be careful about lite weight flywheels can produce a slight turbo lag compared to the heavier flywheel, I will probably buy the mazdaspeed flywheel like cortc, it has the right weight in the right places.
5. I believe they will work with you on pricing, depending on what you buy. Tim's seems like a straight forward guy. I believe I'am sold on this one, just waiting for the Dyno's and I'am BUYING

Thankx for the update.

well 2 days later and website still down!

No.. it's up... just not in a state that should be presented to the public.. haha

http://www.speedforceracing.com

can't wait to see it!

Bump

9000 wow thats just to much!!! i was looking to spend around 5000 complete without installation.

Dang man this kit looks and sounds very promising. I was almost sold on trying out one of the blitz supercharger kits that I was going to ship in from england, but now I'm kinda wanting to see what happens with this kit. The description for this kit says that it makes 275whp @5psi. " The RX-8 Turbo Kit is projected to produce an estimated 275WHP @ 5 PSI!" Some of the other kits were running safe at 8 psi I thought. I wonder what kind of gains we could see at 8 psi from this kit?

Jamie

Same here spyder, looking forward to hard numbers from kit....I love dynos and external wastegates.... : )

Well.. they have a site now just no content.. :) They are making progress... I feel a dyno coming soon.

Bump...

All of the info on this upcoming turbo system will be able to be found first hand in our new vendor section

https://www.rx8club.com/showthread.php?t=45834

Very cool... welcome aboard formally, SSR! :D

Thank you Omicron