You are currently viewing our forum as a guest, which gives you limited access
to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join RX8Club.com today!
These topics will come sooner or later so I will be the first to post it.
This ad is not displayed to registered and logged-in members. Register your free account today and become a member on RX8Club.com!
__________________
1994 White RX7 @ 7psi
K&N drop in
Bonez DP
Greddy Power Extreme
ACT street/strip
Cusco front strut bar
Alluminum AST
HKS turbo timer, Blitz boost gauge
Little blue hoses
You don't hear the non-turbo 1st and 2nd gen guys always talking about blown motors, so why would the RX-8? It's non-turbo ... I think all the FD owners are just jealous
This kind of thread is EXACTLY why Mazda went with NA.
I'm a big NA proponent, and yeah, my car will do the 1/4 mile in about 16 seconds, but I've had it for 2+ years now and it's never given me any trouble.
Yep, I had an FD owner ask me, "So, where do you take it for service?"
I'm like, "Um, I took it to Mostly Mazda when I first got it, but that was over 2 years ago."
He couldn't believe it. Yep, TPS adjustments? Nope, never worried about it. Pinging? Nope. Overheating? Nope. Blown apex seals? Never.
If Mazda can make a NA rotary make 280 HP and do it all day long, why wouldn't they? I just hope they make a crate motor so we can throw some headers on it, lose the cats and make 300 HP all day. That'd be sweet.
While it's much easier to blow an apex on FD, pushing an NA will produce similar results.
A friend of mine use to own RF MOTORSPORTS and together we did R&D for some race teams. Most of our work centered around the hydraulics of the engine; flow rates, compression, expansion and acceleration of air, fuel and exhaust gases.
Remember, the basic philosophy of rotary's is a pump design with minimal number of moving parts. Reviewing a core, air/fuel comes in then around and out as exhaust gasses. Power is simply derived from the volume and rate of which air and fuel can travel through the engine.
The Achilles heel of a rotary is heat from centralization of the combustion chamber. This three combustion / single port exit of heat, is what destroys the engine. This is why a typical FD can be a large detriment. Compressing gasses create heated gasses and then inducing this into high heat environment produces shorten life of contact components.
Strait-line racing is also a negative because of low displacement of the rotors and horizontal compression forces of intermediate and side housings on the rotors. The same horizontal forces though, become a great advantage in non-linear racing (turns). These horizontal forces become lateral in direction and actually improve engine rotation and the rate of acceleration much higher than a piston engine.
The advantages of such a simplistic design allow for minimal porting combined with removal of exhaust restrictions will produce impressive power increases.
Sticking to just expanding on this simplistic design is what allowed us to achieve a (short lived) 517 hp 13b gasoline powered NA engine.
We may not be able to improve much on this engine.
Looking at the pictures. I see a smooth shaped tubular exhaust header already.
The cutaway shows big dual side ports for intake and exhaust.
Also, note the dual intakes with two (2) throttle bodies.
__________________
The modified 91 RX-7 turbo is gone. My next car will be an RX-8.
Heh, it makes you wonder if a transverse mounted rotary (like in most piston powered front wheel drive configurations) would actually be beneficial for drag racing. Haha those Hondas wouldn't stand a chance! :D
Originally posted by vbripple Sticking to just expanding on this simplistic design is what allowed us to achieve a (short lived) 517 hp 13b gasoline powered NA engine.
That's quite a claim ... I'd love to see some proof of this.
I'd love to see some proof of this… now there is loaded question/statement.
OK… In order to do this correctly, I would need an email address for both BOOSTD 7 and Red-Rx7 to send materials to.
This would be a fair amount of information with limited pictures, diagrams and sketches on the principals of design. I would leave it up to the admins. to propagate, in the manor the feel best fits.
The materials will be broken down in to two main sections of IN-SCOPE and OUT-OF-SCOPE. IN-SCOPE will comprise of modifications that can be applied by the weekend worrier rotorhead. OUT-OF-SCOPE will refer to engineered custom components that would be out of scope for the home mechanic. Each section will contain topics covering intake, combustion, exhaust, and ignition.
Please be patient… R&D for racing means return on investment by what can be reapplied to private sector. Some of these items are still being tested for this purpose and will not be shared. Items that are enhancements to Public Domain modifications will be shared and items not currently under patent review.
To all others… Once I have sent the information to the requested admins, please give them time formulate a manor of distribution for all.
Blew my motor!
Member 
Linear Mode
