Exhaust 101 question - ZR-1 Net Registry Forums

Norsky4360 · 05-12-2008

I hadn't noticed this before the other morning. I backed "The Beast" out of the garage to let it idle/warm up a bit before changing the oil. The air temp was around 40 degrees so in the rearview mirror I could see some exhaust 'smoke' coming out of the pipes. I got out and walked around to the back of the car to look at it. I was surprised to see only two of the four openings were 'puffing'. I expected to see 'smoke' wafting from all four of the tips.

Is that correct for a bone stock exhaust system?

If so, would it be harmful to somehow open up the other two? Seems silly to have four openings and only two functional.

LGAFF · 05-12-2008

yes only two outlets work, I would buy an AM system, liven up the car alittle.
LGAFF
92 ZR1
#234

Aurora40 · 05-13-2008

Yup, that's how they are stock. And yup, it looks kinda goofy on cold days. I wouldn't open it up though, replace the muffler if you want something with both sides functional.

Norsky4360 · 05-13-2008

Thanks for the replies. Guess I'll have to live with it for awhile as there aren't any $$$ in the budget right now for replacing functioning mufflers.

Kevin · 05-13-2008

only thing you gain is resonance

93RubyZ · 05-14-2008

If that bothers you and you decide to put on an aftermarket exhaust, don't get the Corsa as they are the same way.

05-12-2008	#1
Norsky4360 Join Date: Feb 2007 Location: Colorado Posts: 115	Exhaust 101 question I hadn't noticed this before the other morning. I backed "The Beast" out of the garage to let it idle/warm up a bit before changing the oil. The air temp was around 40 degrees so in the rearview mirror I could see some exhaust 'smoke' coming out of the pipes. I got out and walked around to the back of the car to look at it. I was surprised to see only two of the four openings were 'puffing'. I expected to see 'smoke' wafting from all four of the tips. Is that correct for a bone stock exhaust system? If so, would it be harmful to somehow open up the other two? Seems silly to have four openings and only two functional. __________________ [IMG]http://www.c3vr.com/member_uploads/401_500/419/thorsten_norge.gif[/IMG] [B][I]Jim O. [COLOR=white]..............[/COLOR][IMG]http://www.c3vr.com/forum/smileys/smiley27.gif[/IMG] [IMG]http://www.c3vr.com/member_uploads/401_500/419/driving1.gif[/IMG] "[COLOR=red]The Toys[/COLOR]" [/I][/B] ...'90 ZR-1.......'70 roadster.......'78 Trans Am.... [I][B][URL="http://www.c3vr.com/member_uploads/401_500/419/TheToyII_102_852.jpg"][IMG]http://www.c3vr.com/member_uploads/401_500/419/TheToyII_104_65.jpg[/IMG][/URL] [URL="http://www.c3vr.com/member_uploads/401_500/419/TheToy.jpg"][IMG]http://www.c3vr.com/member_uploads/401_500/419/Itsa70_36a2.jpg[/IMG][/URL] [URL="http://www.c3vr.com/member_uploads/401_500/419/PICT3106a.JPG"][IMG]http://www.c3vr.com/member_uploads/401_500/419/PICT3106a_sig.JPG[/IMG][/URL] [/B][/I] (click on each to see a larger version) [I][B][COLOR=red]Save the Wave...!!! [IMG]http://www.c3vr.com/images/smilesani/wavey.gif[/IMG][/COLOR][/B][/I]

05-13-2008	#3
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,713	Re: Exhaust 101 question Yup, that's how they are stock. And yup, it looks kinda goofy on cold days. I wouldn't open it up though, replace the muffler if you want something with both sides functional. __________________ Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img]

05-13-2008	#4
Norsky4360 Join Date: Feb 2007 Location: Colorado Posts: 115	Re: Exhaust 101 question Thanks for the replies. Guess I'll have to live with it for awhile as there aren't any $$$ in the budget right now for replacing functioning mufflers. __________________ [IMG]http://www.c3vr.com/member_uploads/401_500/419/thorsten_norge.gif[/IMG] [B][I]Jim O. [COLOR=white]..............[/COLOR][IMG]http://www.c3vr.com/forum/smileys/smiley27.gif[/IMG] [IMG]http://www.c3vr.com/member_uploads/401_500/419/driving1.gif[/IMG] "[COLOR=red]The Toys[/COLOR]" [/I][/B] ...'90 ZR-1.......'70 roadster.......'78 Trans Am.... [I][B][URL="http://www.c3vr.com/member_uploads/401_500/419/TheToyII_102_852.jpg"][IMG]http://www.c3vr.com/member_uploads/401_500/419/TheToyII_104_65.jpg[/IMG][/URL] [URL="http://www.c3vr.com/member_uploads/401_500/419/TheToy.jpg"][IMG]http://www.c3vr.com/member_uploads/401_500/419/Itsa70_36a2.jpg[/IMG][/URL] [URL="http://www.c3vr.com/member_uploads/401_500/419/PICT3106a.JPG"][IMG]http://www.c3vr.com/member_uploads/401_500/419/PICT3106a_sig.JPG[/IMG][/URL] [/B][/I] (click on each to see a larger version) [I][B][COLOR=red]Save the Wave...!!! [IMG]http://www.c3vr.com/images/smilesani/wavey.gif[/IMG][/COLOR][/B][/I]

05-13-2008	#5
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: Exhaust 101 question only thing you gain is resonance __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

05-14-2008	#6
93RubyZ Join Date: May 2006 Location: Texas Posts: 307	Re: Exhaust 101 question If that bothers you and you decide to put on an aftermarket exhaust, don't get the Corsa as they are the same way.

05-12-2008	#2
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Exhaust 101 question yes only two outlets work, I would buy an AM system, liven up the car alittle. LGAFF 92 ZR1 #234