Viper GTSR

Is it possible !?!?

I'm new to this forum but not to performance cars in general. I want to build a reliable 450-500RWHP daily driver that can achieve its HP on PUMP GAS (93oct.) I understand there are major reliability issues with higher HP rotaries. I've owned every type of import sportscar and domestic but have always had a huge love for the rotary 93-95 FD RX7's and daydream of building a quick 450-500RWHP daily driver, using no meth inj. or gimmicks.

**In short, is this possible? What are the reliable pump gas (93oct.) limits of the 13B rotary motor? (assuming you can build a fully street ported or half-bridged motor with good seals, and all the supporting harware)

**IF it's possible, can I achieve my goal of 450RWHP-to-500RWHP on pump running a GT40R turbo kit or maybe going to a GR74 kit?


**Lastly, can anyone post what the TOP three -to- five 3rd gen 13B guys are putting to the ground on 93oct. PUMP gas? I'm talking about the highest known RWHP numbers on actual street driven cars use 93oct and are fairly reliable*

All informative feedback is highly appreciate*

charlies7

iTrader: (4)

Of course, with a aux. injection setup.

Rx7_Nut13B

iTrader: (1)

500+ on pump with out Aux Inject is very possible, there are alot of 500+ hp FDs rolling around

zinx

iTrader: (3)

I would definitely say 450 is obtainable. I don't think you can reliably get to 500 rwhp with 93. However, there are many that would disagree and say you can make it, but even if they are right i think the margin or error is too small.

Whats wrong with meth injection? It works! I made 512 rwhp with 93 and a little bit of meth injection. It adds reliability and increases the margin of error, which you are looking for.

BDC

Name one and show some proof.

B

dhahlen

iTrader: (5)

I've seen well over 500hp on pump alone, 91-93 octane without any problems for tons of miles.

I'll shed some light on this when my FD is finished and also post my pump numbers which will be 500+

Trust me - when it's all running I'll be more than happy to lay out the dyno graphs, charts, spec, etc etc.... =) should be running in march, and then broken in sometime in april when it goes for a tune.

Viper GTSR

By "aux injection" you mean meth inj or other fuel additives correct?

I want to know what the top guys are putting down on just pump (93oct.)...


Big pump power guys or anyone with real-world examples please chime in!!

Zero R

iTrader: (1)

500+hp or 500+whp is a big difference

BDC

Just show some proof already. Not to mention, it'd also be right to be forthright with what exactly is being used. I've never ever once ever heard of a straight-up combo running on 100% *only* 91-93 octane pump gas EFI system, consistently making 500rwhp at whatever boost on any variant of the 13B. There's always a catch of some sort. There's always some sort of "minour detail" that's conveniently left out that has more than a significant effect behind the reason on why it's made that kind of power. That's either the case or it's an attempt by someone doing it once, blowing the car up, and never telling anyone else that it grenaded itself.

It's very difficult to truly achieve that power and especially on a consistent, reliable basis.
It's very easy to fool people into thinking it's done when all you have to do is show a couple of pictures and toss some horsepower figures around on an Internet forum w/o any evidence.

B

rotarygod

iTrader: (1)

If you aren't using 100% 87-93 octane fuel ONLY, you can't claim a number "on pump gas". If aux injection such as water injection or alcohol injection were used, then you can claim "on pump gas with XXX". If the only thing entering the engine is 87-93 octane, then some verification needs to be shown as we've never seen it. I won't say it's impossible as something is only impossible until someone does it. What I am saying is that we'd like to see proof that this someone has actually done it as claimed. I have no doubt that this can be hit on pump gas in conjunction with water injection. While technically the gasoline would be the only fuel entering the engine, it couldn't accomplish this on it's own, hence the water injection. When someone claims "on pump gas", it is implied that this was accomplished with the properties and characteristics of only the gasoline that made it possible. That means no outside assistance in the form of anything other than air to help it along. I would accept a claim of "on pump gas" that included an air/water intercooler with an ice tank though which adds a bit of controversy back into it.

Zero R

iTrader: (1)

B you missed my point.... He said there are a lot of 500+hp FD's running around. I'm saying 500+hp is not the same as 500+whp.

Rotarygod. I can go to quite a few local stations and get E85 right from the pump now there is adding some controversy

Viper GTSR

Come on guys...PUMP GAS + 500 RWHP. Any aux inj. or other trick/band-aid changes everything*

I mean what are the current records for fairly reliable (last over 1.5yr/15,000 street miles) high HP street cars putting down on 93 oct., pump gas with NO other fuel additives on a modded 13B turbo motor

Viking War Hammer

iTrader: (8)

If we're talking E85 now, crispeed is going for 800 soon


Sean, have you had a chance to play with it yet ?

abelrx8

Hi im new to the site but not to mazdas.
to answer your questions yes it can be done with the right porting engine building proper turbo sizing and must important of all TUNING. if interested in a package email me abelrx8@sbcglobal.net

abel ibarra

Viking War Hammer

iTrader: (8)

oh **** son, abel DOES know how to use a computer !

Busted7

Wow you never know who's watching. Hi Abel! Viper im running 93 oct 480 rwhp 20 psi on 8.5 rotors no added injection best run 10.87 a/c brakes steering and cruse 2740 lbs 1878 miles on the build with no problems yet. But time will tell!

zinx

iTrader: (3)

Whoa, we are in the presence of greatness!

13B-RX3

iTrader: (2)

Damn, money must be getting tight!

Busted7

Hush you will scare him off. I would love to here from abel, ari post sometimes.

13B-RX3

iTrader: (2)

Crikey....the elusive rotary tuner.

Sorry, I'll play nice. I didn't mean to be disrespectful he just seems to have ulterior motives besides educating us .

BDC

Heh, heh, assuming it's really him. Funny he'd all the sudden chime in on a thread like this after having had all sorts of opportunity over the past 6-odd years...

BASTARD

iTrader: (4)

Viking War Hammer

iTrader: (8)

No doubt, he signed up nearly 3 years ago and finally decided to post on this thread

Busted7

The clouds spred, the sea parted, and the voice of God was heard to say? What was that Lord? Come on if Abel is in the house please introduce your self!

Viking War Hammer

iTrader: (8)

I always found it hard to understand why Abel never posted on this forum.

He could easily clear up alot of rumors and myths that are said about him in our Drag Racing Forum. https://www.rx7club.com/rotary-drag-racing-167/