Justin87rx7

Hey Guys-


i just wanted to know why the flames shoot out of an rx7 aftermarket exhaust system, and why not out of piston powered cars?




Thanx,
Justin87rx7

kleach18

Because rx-7's are bad *** like that!!!

Its just they way they are. The unused fuel gets pushed out in the the exhaust system. And becuase rotary exhaust are so hot the light the unused fuel.

Pirsss

Are flames coming out of any aftermarket system?

marcus219

broooooommmmmm.......bap, bap, bap, bap.....BOOM! ahh.....gotta love it.

Vee

is afterburn bad for the engine??

marcus219

gonna have to say no on that one...its just excess fuel been ingnited in exhaust like said above.

Bridgeported

With a peripherial style exhaust port, the excess fuel just gets dumped out, well pushed out, into the exhaust by the apex seal. With the Renesis engine, and it's side-port exhaust ports, the unburned fuel gets carried around to be combusted again in the next cycle (that's why it's 32% more fuel efficient). So yeah, peripherial exhaust port means more fuel gets dumped in, and like was said before with a rotary engine's hot (1800 deg.) exhaust temperatures it's easy to ignite.

When porting is done, especially bridgeporting , there are times when fuel gets dumped straight into the exhaust system!

Flaming doesn't hurt the engine, but it looks awesome!

2a+RoN

yeah... gotta love it. especially seeing other peoples reactions to hit. hehe....

darkwaveboi

sometimes my engine doesnt feel good till its had a few 'burps' after warming up

silverrotor

iTrader: (1)

What Bridgeported said. Our cars run **** rich. Not by choice but design. Get a S-AFC your car will run better and you'll rid yourself of those flames. Unless you like roasting already dead roadkill.

SlayerwithaFC3S

hmm would a almost full RB exhaust sept dual apexi n1 mufflers do the flaming if so or do i gotta exhaust port it?

Wankel7

I believe if you have a cat it will arrest the flames. Any truth to that?

James

Spraintz

iTrader: (1)

i have seen a number of high-flo cats that have allowed some small flames.

Wankel7

Hum, I have a downpipe, hi flow cat, n1 duals. I need to get somebody behind me

James

dr0x

Cats will tone down the flames. Sometimes all you see is a black puff of smoke. A gutted cat or a mid pipe youll see big flames.

mrb63083

iTrader: (4)

I have a bonez dp and mp, and stock catback, and i shoot massive flames.

poor college student

i have an RB header, presilencer, hks 50mm catback, NO flames... kind of wanting some just for kicks... any tips?

Bridgeported

Do a full bridgeport, run the a/f ratio a tad rich, and run a near open exhaust (straight pipe all the way from the turbo except for a 'straight thru design' muffler at the end) and you'll be having trouble not shooting flames

FC3SPORT

Hmm... my car never shoots flames and it's got an straightpipe exhaust.... then again it's an N/A...

poor college student

how to get n/a with flames.............

boostmotorsport

Doesnt ahving a open vented BOV adsd to the flames as well? My flames are like 12" and blue in color with 3" back to HKS TItanium Hyper.

vicious525E

because rotorys god, when it get mad because a ricer, domestic etc. are trying to race a person it get pissed and blow fire that makes the ground shake, there kinda like valcano gods when they were babys.... im dumb...

GLHS

Retard your timing and you have larger and longer lasting flames.

They also look a more blue color instead of orange..

jacobcartmill

iTrader: (6)

i think i need to advance my timing. i cant even get my car through the RPM range without it popping and bucking from being so rich. how do i advance it?

dr0x

Yes. When the bov goes off it removes air that was measured by the AFM. Causing the motor to run stupid rich for a few seconds. Thats usually why the flames happen when you remove engine load after a hard run through the rpm range.