What is all the racket?, Engine rev Options

[johnnehh]

http://www.youtube.com/watch?v=j5KZ8oV9Zos

At about 3,000 RPM, the exhaust seems like it's rattling somewhere. My friend told me that it was my radiator leak making the noise, but now I have a radiator and it's still doing the same thing.

I checked the exhaust and nothing seems wrong.

Thanks in advance :]

(this is an old video, btw)

[blu94gt]

I'm sorry, but the radiator won't make a sound like that.

From what I can gather from the video, it just sounds like one of the exhaust heat shields is rattling, or the cat has particles broken loose. I'm leaning more towards a heat shield. Check all the bolts on the manifold heat shield, and see if some of the shielding around the cats is loose.

Hope you find the problem, doesn't seem like anything major.

[cardshark525]

^x2

If you hold the RPM's steady at the point where it starts making noise does it do it too?

Was the Cat for me.

Then again it was an excuse to get a new header lol.

[johnnehh]

^x2

If you hold the RPM's steady at the point where it starts making noise does it do it too?

Was the Cat for me.

Then again it was an excuse to get a new header lol.

Yeah, it makes the noise when I leave it at 3-4k rpm.

And I just ordered a new header. Haha.

[cardshark525]

Just got the header on today... I am very pleased.

But that wasn't the problem.

I finally found that the rattling is coming from the mesh part of the down pipe, on the side where it connects to the mid pipe.

The mesh on the side away from the engine and towards the cat is completely separated from the mid pipe.

That's where my rattling is coming from...



Looks like I have an excuse to get a full exhaust now.... lol.

I won't because I can't afford it right now but its in the future.


Take a look at that. It might be the problem.

[Galcobar]

Replacing the flex pipe doesn't require a new exhaust. It requires a decent exhaust shop and about twenty minutes.

[cardshark525]

I understand what you mean however on a vehicle like ours which in my case is 15 years old and still has 99% original parts I would rather replace things with new parts than do so called "patch work".

[presure2]

our exhausts are made of 409 stainless steel, they dont require any mantinence, other than replacing the cats and or flex pipe when they fail.
chances are any exhaust you have made wouldnt last 1/2 as long as the OEM equipment.

replacing a flex pipe isnt patch work, the flex is designed to do just that, "flex" and take the load off of the piping.
over the years, the flexing causes the strands to crack and break, its part of the deal.(along with the fact that the flex section isnt stainless.

[cardshark525]

What I ended up doing is just ordering a replacement Bosal flex pipe.

I figure it would be the most viable option and it wasn't too expensive either.