Metal in exhaust? - ZR-1 Net Registry Forums

Dmod81 · 02-28-2015

I just got back from a 1 hr drive where I had the revs above 3k most of the time. When I got back, I found what looks to be metal in all 4 exhaust tips. It is not magnetic, but looks shiny from some angles. Does anyone have any idea what it could be? It does look similar to the stuff that collects on the bumper from driving, but that couldn't make it's way into the exhaust tips, could it?

LGAFF · 02-28-2015

Cats coming apart...or internal rust? could not see pic

We Gone · 02-28-2015

Wonder if you have a cat coming apart.

LGAFF · 02-28-2015

ok looks fresh, not sure

Dmod81 · 02-28-2015

Cats would make sense. They're pretty new though, fall of '12 if I recall correctly.

We Gone · 02-28-2015

You have headers and aftermarket cats? Common resonator?

Dmod81 · 02-28-2015

Headers, aftermarket cats, x-pipe, b&b mufflers and Z06 valves/tips.

We Gone · 02-28-2015

Do you happen to know if they are steel substrate or ceramic honey comb cats. You may be able to collect some of the residue and have it analyzed.

Dmod81 · 02-28-2015

You know, I really don't know which, but I want to say ceramic. Who could I send it to for analysis? I tried to collect some for a better look, but it gets covered with the exhaust residue and turns black.

We Gone · 02-28-2015

It may be more trouble but I think I would drop the exhaust and check the cats. You don't want the particles getting sucked back into the motor as you back off the throttle.

02-28-2015	#1
Dmod81 Join Date: Mar 2010 Location: Colorado Springs CO Posts: 76	Metal in exhaust? I just got back from a 1 hr drive where I had the revs above 3k most of the time. When I got back, I found what looks to be metal in all 4 exhaust tips. It is not magnetic, but looks shiny from some angles. Does anyone have any idea what it could be? It does look similar to the stuff that collects on the bumper from driving, but that couldn't make it's way into the exhaust tips, could it? Last edited by Dmod81; 02-28-2015 at 09:08 PM.

02-28-2015	#2
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: Metal in exhaust? Cats coming apart...or internal rust? could not see pic __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

02-28-2015	#3
We Gone Join Date: Apr 2004 Location: Atlanta, GA Posts: 2,170	Re: Metal in exhaust? Wonder if you have a cat coming apart. __________________ Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold

02-28-2015	#4
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: Metal in exhaust? ok looks fresh, not sure __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

02-28-2015	#5
Dmod81 Join Date: Mar 2010 Location: Colorado Springs CO Posts: 76	Re: Metal in exhaust? Cats would make sense. They're pretty new though, fall of '12 if I recall correctly.

02-28-2015	#6
We Gone Join Date: Apr 2004 Location: Atlanta, GA Posts: 2,170	Re: Metal in exhaust? You have headers and aftermarket cats? Common resonator? __________________ Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold

02-28-2015	#7
Dmod81 Join Date: Mar 2010 Location: Colorado Springs CO Posts: 76	Re: Metal in exhaust? Headers, aftermarket cats, x-pipe, b&b mufflers and Z06 valves/tips.

02-28-2015	#8
We Gone Join Date: Apr 2004 Location: Atlanta, GA Posts: 2,170	Re: Metal in exhaust? Do you happen to know if they are steel substrate or ceramic honey comb cats. You may be able to collect some of the residue and have it analyzed. __________________ Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold

02-28-2015	#9
Dmod81 Join Date: Mar 2010 Location: Colorado Springs CO Posts: 76	Re: Metal in exhaust? You know, I really don't know which, but I want to say ceramic. Who could I send it to for analysis? I tried to collect some for a better look, but it gets covered with the exhaust residue and turns black.

02-28-2015	#10
We Gone Join Date: Apr 2004 Location: Atlanta, GA Posts: 2,170	Re: Metal in exhaust? It may be more trouble but I think I would drop the exhaust and check the cats. You don't want the particles getting sucked back into the motor as you back off the throttle. __________________ Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold