Guys, I heard from a Rotary speacialty shop in Florida, that works with the famous FISHMAN, that not only will the MazdaSpeed Turbo RX-8 be released in about 6 months, but that with our stock rotors we could only build safely six pounds of boost. And that we would have to switch out for high pressure rotors that can stand 15 pounds of boost.

 

oh yeah, this is a real long thread to read all of it, so could some please tell me what companys already sell SC kits we know will work with the 8?

 

I was wondering when the new RX8 Turbo kit will be available and how much it may run price wise. Year(s) or sooner.

Thanks,
William Hall





Thanks for your interest in GReddy Products
Trust does offer a turbo kit for the Japanese spec model, but currently we do not have an application that will work with the USA spec RX8. We are still unsure if we will make one available for the USA spec car yet, but we are working on it now.
Please check back with our website www.greddy.com for updates or contact an
authorized GReddy Dealer
--
GReddy Performance Products, Inc.
9 Vanderbilt
Irvine, CA 92618
www.greddy.com


PLEASE GOD NOOOOOOOOOOO! TURBO NO GO TURBO NO GOOOOOOOOOOO

 

OK, anyone else thinking light boost (6 psi) roots style (electric clutch - load sensing) supercharged 3-rotor Renesis?

This car is far more a GT than a hypersportscar, so turboing it seems out of character, no? Think Ferrari 550 more than 3rd gen RX-7.

 

I spoke with a rep from Pettit Racing and they told me the bad news about thier project car. Apparently the car with running supercharger was sent out to a test facility and was being tested by Road & Track or Motortrend (can't remember which one) about a week and a half ago. Whom ever was driving the car (not Pettit staff) was preping for a 1/4 mile run and when the tree lit up he droped the clutch at 5000 rpm and destroyed the tranny, well 1st and 2nd gear anyway, and they had to stop the whole testing deal. Pettit will be gettin the car back and replacing the transmission or at least gears and will return for the testing to continue. It doesn't appear to have been a failure due to the supercharger but rather my money is on the mental giant of a driver for the company doing the review. Yes, the SC does produce more low end tourque and that could have had a little to do with the failure of the tranny though it doesn't take a rocket scientist to figure out that 5 grand drops aren't what the car is made for. Either way to dispell rumor, Pettit is still planning to move forward with the SC kit and should have the first prototypes available with in a few weeks, or so they say. The numbers they were getting were 220 h/p at the wheels and about 180-190 in tq though not sure what part of the RMP range those numbers peak at. Kudos to Pettit for not letting a set back like a cooked tranny become a reason to scrap the whole project.

 

Sorry to be negative here...

To drop a clutch at 5,000rpm is not unusual. If the gearbox failed in that scenario, then the gearboxes simply aren't strong enough to handle more power. Which is a pity, the FD RX-7 gearbox is very strong in that case - they can cope with a lot more abuse than that.

Please keep us informed of their findings, hopefully it doesn't mean that if you want to put more power through it you have to change the gearbox also - will end up being a VERY expensive power upgrade.

 

Thanks for the update and clarification Vivid..........

 

In regard to the Pettit car, the idiot was from Motortrend and the car is back together again. I drove the car while under development and it should be great. Since I drove it they added larger injectors and finished the fuel maping. My order is already placed and hope to have it installed and on the track at Morosso by September 4th NASA event.

 

So how do we go about ordering this kit? And where can we go to get more information on this? Maybe a link or something like a phone number?

 

[QUOTE=rx-8club.co.uk]... If the gearbox failed in that scenario, then the gearboxes simply aren't strong enough to handle more power... QUOTE] So, is this because the RX-8 gearbox is the same as in the Miata? Any hopes for a beefier 6 speed? What alternative trannys are available? At what cost and degree of mods?

 

Punisher:

I don't think they are selling the units yet, but you may want to get on a list if they have one. Talk to Tyler. Tel number is 561-844-2258. It may be answered as Excellent Performance. This is one of Pettit's companies.

 

Thanks for the info...........

 

Tranny was completely stock. The guys at Motortrend blow their tranny with (I think) a 5000+ clutch dump. New tranny was installed and they did all of their testing. I would contact Tyler at Pettit to find out about the results and what their plans are.

 

I'm sorry, but I have to agree with another person up the thread a bit...if the SC kit is only putting out sub-200 ft/lbs of torgque (its a nice improvement but by no means a torque monster) and a 5K launch cooked it...that's just not good. Hell, I see people giving advice that you have to drop above 4K to get any kind of good launch. Now, that's with the stock motor, so you may not have to do that with the SC, I don't know...but I'm surprised that the tranny is that close to the edge, frankly. I wonder if it could have been subject to some heavy use prior to that?

jds

 

Am I the only one who finds these numbers a little disappointing?

Shouldn't they be getting well over 220 hp to the rear wheels with a SC?

 

what kind of dyno? what did they baseline it at? the increase is more important than the final number.

 

I agree.

And to be honest, I had a brain fart when I posted the above comments. I was thinking 10% loss of hp through the drivetrain, instead of 20%.

Therefore, the dyno could be showing an approximate increase of 30 hp or more at the rear wheels.

As you said, we need to know what the baseline was.

 

This tops the BS content of any marketing write up I've read in the past 3 months.

 

RX8-TX, they are working with SSR to get this kit out but it hasn't been finalized yet. They are still working out some bugs last I heard.

 

I knew about the cooperation between SSR and them. What I was refering to is the amount of BS they spoutted on the kit's description on their website. Not SSR, but whoever is in charge of marketing and web content at SpeedForceRacing.

Just to hit a few examples: did they manage to remove the fuel cutoff when hitting 9,800 rpms? I understand that marketing will always be marketing. I work for an industry that has the lowest ethical standards of all; however, taking things in context...we are talking about an engine upgrade. Something that is so delicate as a TC Kit should be marketed with exact specifications and realistic specs.

And of course...the "Anemic Renesis motor" comment is...well, still hurting (although it holds truth.)

Again, I am by no means questioning the product quality; nor the time, money and effort put into R&D. I am criticizing the integrity of whoever did that write up.

 

I see! I'm waiting till the kit is finalized and tested before I put down my money. When I see numbers and a little time go by without a blow-up I'll be in line though. The write up is a little weak, my wife has her degree in marketing, and probably needs to be cleaned up a lot before the kits are produced in bulk.

 

At the end of the SSR video demonstrating the turbo, I saw smoke coming from the turbo. Should I be alarmed?

 

The guy posting under SSR-Engineering said it was cable loom that got in contact with something under the hood and got burnt.