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-   -   Flames on FC (https://www.rx7club.com/new-member-rx-7-technical-256/flames-fc-797732/)

nickk47 11-01-08 11:07 PM

Flames on FC
 
Is it possible to flame on a naturally aspirated model of an FC?
I know that if you gut the cat, it will flame but can you flame with a downpipe, high flow cat and very high flowing catback system? ( like Apexi N1 or Apexi GT)

rx7fitz 11-02-08 12:46 AM

the guy i bought my shell from shot small flames out his and it was stock minus a few mods such as intake air filter etc.

Icemark 11-02-08 12:48 AM

tough to flame with a cat.. by design they are supposed to stop that.

sinned2545 11-02-08 01:32 AM

My boy shot flames the other night in his N/A FC....
Im not sure the exact set up...

But u can PM him to ask....

his name is
helghast7

nickk47 11-02-08 01:10 AM

Hmm, I see. I guess I'll have to gut it out after emission test.

Renton 11-02-08 01:49 AM

What if you disable the air pump? Better chance?

I have highflow cats and a Racing Beat catback. I get alot of pops but never any flames, i don't think...

jimieatgirl 11-02-08 02:07 AM

I get an afterburn and I have an cat at the y pipe, rather its gutted or know I do not know. I have an N/A

nickk47 11-02-08 01:01 PM

well you must have it gutted out cuz I searched and theres no way you can get a nice flame going with any kind of cat in there.

Anyways, is flaming bad for your car? I mean, if the car was sitting still and you flame it, then the bumper might get some burn marks won't it? What about when driving it? Is this bad for ur engine in any way?

nickk47 11-02-08 01:43 PM

I see.
I have another question although its not related to this.
In the FC, does it have an AST? If not, would getting an aftermarket AST be possible and would it give me any advantages?

spacemanmort 11-02-08 07:42 PM


Originally Posted by nickk47 (Post 8688096)
I see.
I have another question although its not related to this.
In the FC, does it have an AST? If not, would getting an aftermarket AST be possible and would it give me any advantages?

no, yes, no
my understanding is the ast is on the fd to act as an air trap for bubbles in the coolant. in the fc the neck that the upper rad hose attaches to acts as an air trap, why thy did not leave that on the fd makes no sense to me. but there is a lot of stuff on the fd that is not as good as the fc.

helghast7 11-05-08 06:32 PM

first off, let me say that if you disable the air pump with a cat that needs the air... you will do nothing more then clog your cat and kill it...and then there will be no point but to gut it or replace it.....

as for gutting the cat, been there done that, gutting it does nothing for flames, ater its gutted it simply acts as a large area that the exhaust can reignite itself....for those of you who dont quite understand let me give an example....

when i gutted my cat when i would rev up sometimes i would hear a loud bang or pop, coming from underneath the car(where the backfire would occure)

because of this the cat acts more like a resonator then anything else

flames are caused by the simple fact that our engines are probably the dirtiest engines ever designed....they simply cant burn all the fuels so sometimes from the pressures in the exhaust it will burn after combustion

the reason its so hard to produce an afterburn on a stock n/a fc other then the cat's is for the simple fact that....ready for this?

Mazda designed the headers to burn the exhaust again right there....so the majority of the possible afterburn is done right in the headers.....so if you were to change them...the likey hood of afterburn is greatly increased....

so for example as sinned said my car has a full RB true dual exhaust system, so if i rev high enough i can pop flames....however, because i constanty monitor how my car is tuned throught the sensors so that im not running overly rich(im poor and cheap, waisting gas is not an option) because of this my flames are pretty small, and it doesnt happen to often

if you really want to spit...i suggest changing the headers, getting either a straight pipe, a highflow cat, or a resonator, and tune the tps so its running rich....you will definely spit

Rotary** 11-07-08 05:33 AM

My friend has headers,no cats and straight pipe. He spits flames all day

GIXX 11-07-08 02:48 PM

or if you really want to, you can run a fuel line and injector with a spark plug to near the end of the exhaust and wire it to work off of a switch in the cockpit. i knew a guy who did that and spit several feet of flames. His was a kit that he got off the internet, but i don't know where

helghast7 11-07-08 05:23 PM

NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

NO NO NO NO NO!!!!!!!!!! that is nothing but pure RICE!!!!!!!!!!!!!!!!! if you do that you will be ridiculed and laughed at by all people alike...well except honda owners.....

besides that there is no point because, if you listened to what i/other people say you would no that rotary engines spit naturally...

no need for the fuel in the exhaust or the sparkplug in the exhaust bull shit that honda people do

nickk47 11-07-08 05:25 PM

Why would I purposely buy a kit when I can spit flame by changing the header...

GIXX 11-09-08 10:15 AM

I'm not saying you should and i would probably ridicule you if you did, I was just saying it is out there. I wouldn't do it either.

One thing, I don't think you can call it rice, because domestic hot rod guys have been doing it for billions of years. and yes i know that some of them do it the natural way, but there are those who do what i described above, or something similar...............just thoucht of something, what would you call the domestic equivalent of a ricer anyway? like a cheeseburgerer or something?

gripin it 11-09-08 05:56 PM

My fd is a straight high flow exhaust not a cat back but when i redline i have some flames[i have only hit my redline twice]

414 RX7 RIDER 11-10-08 11:18 AM

Spit Flames
 
If You Want Your 7 To Spit Flames Youll Need 3 Things Header, To Straight Pipe, To Muffler. All Your Favorite Rapper Needs Is A Bag Of Dro And A Mic

rnz520 11-11-08 01:08 AM

Yea dont do it, you get weird looks by people that think your car is about to blow up, not to mention that just means you are running rich, put that fuel to better use and make more power

jimieatgirl 11-11-08 11:15 AM

I have not seen "Flames"


I have a stock 91 n/a stock header, Cat at the Y,

I do hear a "POP" when I shift at 6,500 and up.
and I hear a little POOF, when i'm over 3000 and I let off the gas and cost, then hit the gas thats where I hear the POOF..

Like I said, no clue if the cat is gutted, is this the norm for 7's

still a new to 7's

prowindow1 11-11-08 07:18 PM


Originally Posted by Renton (Post 8687444)
What if you disable the air pump? Better chance?

I have highflow cats and a Racing Beat catback. I get alot of pops but never any flames, i don't think...

you gt flames too

Rotarded-at-last 11-11-08 08:00 PM

I love rotarys,People dont ride ur ass when u shoot flames at em!!


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