hey just wondering if anyone has had this before...i installed my dc header a couple months ago and since then ive been hearing rattling noises @ 1500rpm or any low idle....it rattles at stop lights....just wondering if anyone has had this problem...its the most annoying sound ive ever heard...i know its not the heat shield cuz i dont have one....can anyone help me figure out how to fix this problem

 

try tightening the bolts they might have got loose since u probably didn't line up the header to piping correctly.

 

nope not it....BUMp

 

There is a metal bracket that the header hangs onto, did you use it?

 

nope

 

might be coming close to that front crossmember depending on what engine you have in there.

 

dont hand tighten your o2 sensor.....

i made that mistake, i THOUGHT it was tight, but rattled loose, was annoying as expletive untill i realized what it was.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by STREETWERKZ &raquo;</TD></TR><TR><TD CLASS="quote">dont hand tighten your o2 sensor.....

i made that mistake, i THOUGHT it was tight, but rattled loose, was annoying as expletive untill i realized what it was. </TD></TR></TABLE> Same thing happened to me. The o2 sensor may be the culprit...

 

can it be the donut gasket???? can dc headers be too long????

 

should the header have come with the gasket??? cuz mine didnt....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EL Vap133 &raquo;</TD></TR><TR><TD CLASS="quote">There is a metal bracket that the header hangs onto, did you use it? </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HdA1T6CzH6 &raquo;</TD></TR><TR><TD CLASS="quote">nope
</TD></TR></TABLE>

I bet that's where it's rattling at.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HdA1T6CzH6 &raquo;</TD></TR><TR><TD CLASS="quote">should the header have come with the gasket??? cuz mine didnt....</TD></TR></TABLE>

That's why you use your old one.

 

ill go check dat out tomorrow

 

can it be the heat shield on the cat??

 

could be.

but seriously.... did you use new donut gasket where the header meets the cat?
did you use a new exhaust manifold gasket at the head?

if it s a 2 piece header, did you use new donut gaskets in between the two?

is the O2 sensor tightened with a wrench? or did you screw it on by hand?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by STREETWERKZ &raquo;</TD></TR><TR><TD CLASS="quote">could be.

but seriously.... did you use new donut gasket where the header meets the cat?
did you use a new exhaust manifold gasket at the head?

if it s a 2 piece header, did you use new donut gaskets in between the two?

is the O2 sensor tightened with a wrench? or did you screw it on by hand? </TD></TR></TABLE>

 

anyone know where i can buy the donut gasket and how it looks like???

 

uhhhh, honda.

and it looks like a donut.

 

maybe your cat is shot and its rattleing all the debris in it???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nicks_jdmstyle_ef9 &raquo;</TD></TR><TR><TD CLASS="quote">maybe your cat is shot and its rattleing all the debris in it???</TD></TR></TABLE>


nope that isnt it cuz i know how that sounds like and it aint it...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EL Vap133 &raquo;</TD></TR><TR><TD CLASS="quote">There is a metal bracket that the header hangs onto, did you use it? </TD></TR></TABLE>

More than likely thats the problem. If you get a flex pipe, it might stop the rattling.