Stupid exhaust question and story.. pics!! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Tantwoforty · 12-01-2009, 10:12 PM

So i have a cat back...
And when i got it it sounded great.. it was loud but tolerable.. great tone.
Then this happened...

also this

Now think of the pretty purple is flaming hot red... and say to yourself how much my camera phone sucks.
After this happened and i got it all fixed and running right again, a few things have changed..
It melted my gaskets to a fine powdery crisp.. it raped my nice new cat i recently bought to pass smog.. to be more precise it deformed the screen closest to the rear of the car, and turned it sideways so its free to rattle its little heart out.

So i picked up some new gaskets.
I removed the remnants of the dislodged screen inside the cat and left the front one there since it has no problems.
Then i reinstalled the cat back.
When i started the car it was at first pretty pleased since the massive leak from the flanges was fixed and my car didn't sound like a wet paper bag anymore.
but then it settled down to idle and started rattling.. like a loose screw noise. so i checked it out and came to the conclusion that its inside the muffler. so i drove around and the sound is like 70% louder then before. and rattles!
I am assuming that a piece of the cat fell into the baffling and is stuck..

So my question is would overheating and shooting raw gas and flames out my exhaust melt the packing in the muffler and cause a large sound increase?
and would buying a new muffler of the same type and welding it on fix this.. or would not replacing the resonator mid pipe at the same make it kind of pointless...

any input is helpful, i searched and didn't find anything quite like this...

Devens240 · 12-01-2009, 10:22 PM

holy shit.

Mista Lee · 12-01-2009, 10:32 PM

holyshit

sorry i have nothing contributive to give :P

payne219 · 12-01-2009, 10:36 PM

ummmm something isnt right...

Ka? Sr?

Are you running so extremely lean that you exhaust starts to melt?? is that even possible?

Team DET · 12-01-2009, 10:41 PM

damn

lazysk8er2 · 12-01-2009, 10:46 PM

what are your mods on which motor and whats your a/f readings?

check your plugs what do they look like

Ceepo · 12-01-2009, 11:28 PM

Give us more details on the motor, if you can cut the muffler open or what is rattling remove what is rattling and weld what you cut out back on... but you are running extremely lean, i have only seen this once on a late 90's ford econoline van lol, and it was just the cat was glowing orange not the whole damn exhaust...

Tantwoforty · 12-01-2009, 11:36 PM

This was caused by a extremely leaking injector on cly1 and mixed up plus wires on 1 and 2.

Its fixed now and the car runs 100% normal.
The question was about the muffler not the motor

And its just a ka

So...
Would burning the hell out of my muffler make it louder...
And would welding a new meagan muffler of the same size and type be worth it..

i guess i could cut it open and look.. but then i wouldn't have a muffler until i replaced it

Sileighty_85 · 12-01-2009, 11:41 PM

More than likely you burned up all the steel wool in the canister and now that cylinder with the holes is rattling around or the steel wool turned in to a block of metal and yes your mufflers probably gonna be louder now

urmyhero4now · 12-02-2009, 01:05 AM

damn who cares that shit looks dope.

Tantwoforty · 12-02-2009, 01:33 AM

Quote:

Originally Posted by urmyhero4now

damn who cares that shit looks dope.

yeah it did!
when it was idling it was poping out a blue flame per combustion.. it sounded like a fucked up wrx lol

revving it shot flames at least 3 feet...

i have a vid of it ill upload lader

it looked like i had underglow :ghey:

Tearlessj · 12-02-2009, 01:38 AM

haha no way. Vids!

12-01-2009, 10:12 PM	#1
Tantwoforty Nissanaholic! Join Date: May 2009 Location: Riverside ca Age: 35 Posts: 1,890 Trader Rating: (20) Feedback Score: 20 reviews	Stupid exhaust question and story.. pics!! So i have a cat back... And when i got it it sounded great.. it was loud but tolerable.. great tone. Then this happened... also this Now think of the pretty purple is flaming hot red... and say to yourself how much my camera phone sucks. After this happened and i got it all fixed and running right again, a few things have changed.. It melted my gaskets to a fine powdery crisp.. it raped my nice new cat i recently bought to pass smog.. to be more precise it deformed the screen closest to the rear of the car, and turned it sideways so its free to rattle its little heart out. So i picked up some new gaskets. I removed the remnants of the dislodged screen inside the cat and left the front one there since it has no problems. Then i reinstalled the cat back. When i started the car it was at first pretty pleased since the massive leak from the flanges was fixed and my car didn't sound like a wet paper bag anymore. but then it settled down to idle and started rattling.. like a loose screw noise. so i checked it out and came to the conclusion that its inside the muffler. so i drove around and the sound is like 70% louder then before. and rattles! I am assuming that a piece of the cat fell into the baffling and is stuck.. So my question is would overheating and shooting raw gas and flames out my exhaust melt the packing in the muffler and cause a large sound increase? and would buying a new muffler of the same type and welding it on fix this.. or would not replacing the resonator mid pipe at the same make it kind of pointless... any input is helpful, i searched and didn't find anything quite like this...

12-01-2009, 10:32 PM	#3
Mista Lee Zilvia FREAK! Join Date: May 2008 Location: Riverside, CA Age: 33 Posts: 1,003 Trader Rating: (26) Feedback Score: 26 reviews	holyshit sorry i have nothing contributive to give :P __________________

12-01-2009, 10:41 PM	#5
Team DET Zilvia Addict Join Date: May 2008 Location: San Bernardino Posts: 770 Trader Rating: (13) Feedback Score: 13 reviews	damn __________________ (OΞO/- -\OΞO)

12-01-2009, 11:28 PM	#7
Ceepo Nissanaholic! Join Date: Jan 2008 Location: Cedar City, Utah Posts: 2,007 Trader Rating: (9) Rides Gallery: Ceepo Feedback Score: 9 reviews	Give us more details on the motor, if you can cut the muffler open or what is rattling remove what is rattling and weld what you cut out back on... but you are running extremely lean, i have only seen this once on a late 90's ford econoline van lol, and it was just the cat was glowing orange not the whole damn exhaust... __________________ TW: http://zilvia.net/f/cars-sale/390459...d9s-coils.html

12-01-2009, 11:41 PM	#9
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	More than likely you burned up all the steel wool in the canister and now that cylinder with the holes is rattling around or the steel wool turned in to a block of metal and yes your mufflers probably gonna be louder now __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

12-01-2009, 10:22 PM	#2
Devens240 Zilvia Junkie Join Date: Dec 2007 Location: Washington Age: 35 Posts: 413 Trader Rating: (1) Feedback Score: 1 reviews	holy shit.

12-01-2009, 10:36 PM	#4
payne219 Zilvia Junkie Join Date: May 2008 Location: A-Pine drft Age: 36 Posts: 359 Trader Rating: (6) Feedback Score: 6 reviews	ummmm something isnt right... Ka? Sr? Are you running so extremely lean that you exhaust starts to melt?? is that even possible?

12-01-2009, 11:36 PM	#8
Tantwoforty Nissanaholic! Join Date: May 2009 Location: Riverside ca Age: 35 Posts: 1,890 Trader Rating: (20) Feedback Score: 20 reviews	This was caused by a extremely leaking injector on cly1 and mixed up plus wires on 1 and 2. Its fixed now and the car runs 100% normal. The question was about the muffler not the motor And its just a ka So... Would burning the hell out of my muffler make it louder... And would welding a new meagan muffler of the same size and type be worth it.. i guess i could cut it open and look.. but then i wouldn't have a muffler until i replaced it

12-02-2009, 01:05 AM	#10
urmyhero4now Zilvia Junkie Join Date: Mar 2006 Location: Bay Area Posts: 437 Trader Rating: (0) Feedback Score: 0 reviews	damn who cares that shit looks dope. __________________ http://sanjosecarsandcoffee.com

12-02-2009, 01:38 AM	#12
Tearlessj Nissanaholic! Join Date: Feb 2007 Location: Memphis Age: 33 Posts: 1,907 Trader Rating: (6) Feedback Score: 6 reviews	haha no way. Vids! __________________ Nagasaki Motors Friends help you move. Real friends help you move bodies.