Exhaust rattle Question

[Goon]

Any Question !! woohoo go me..

I can here my exhasut rattle on real low revs at the rear and i can hear it rattle or something when i move around corners slow.. I've suspect its exhaust rubbers, so does another person.. Is there a way of telling if they have gone crap? or is there a use by date or something?

Cheers

[SoulGrind]

Could be the baffle in the Muffler has gone.

[craigvk]

Do up exhaust pipe clamps tighter, get under the car and inspect the pipes. Have you got an exhaust tip? That could be rattling.

[Goon]

It's a Clamp

cheers

[craigvk]

Ahhh there you go.

I had a loose clamp on my hotdog a while back. The muffler was a bit wobbly.

[Goon]

Well i found out that the clamp that was rattleing was lose and i lost its oringal position as i took it off

i'm replacing the rubbers as the are my issue over streched!!

But where does this clamp belong?

I checked my book and they arn't much help

Is it worth it putting a cat between the extractor end that meets the pipe?

[craigvk]

If you see two pipes together (joined) without a clamp, that's probably where it would go on. Same with mufflers and pipes joining, there should be a clamp on it, or a flange.

You can buy clamps even at Super cheap auto.

You wouldn't find it in your book as exhaust systems are usually a highly modified thing when new mufflers or pipes are put in. All your book would say is where the mounting rubbers are.

[Goon]

Thanks for the info mate

Replaced all my rubbers today,and everythings great

[craigvk]

Why did you replace them all? I would have only replaced ones that needed it. Surelly most of them would have been ok?

Talking about exhausts, when you put your tube headers on, did you get a flange put on the end of the headers?

[Goon]

Nah mine fit really nice considring they came from a VK, there no air leaks, the extractor gasket is squished between the head and header..

The end of the header was mig'd to the rest of the exhaust.

no flange..

[craigvk]

Ahhh. So you didn't take my advise about putting a flange on the end. What happens when you want to take your headers off? Either cut the pipe off or drop the entire exhaust down. Not my way of doing things.

[Goon]

The middle pipes slides into the headers with a weld around it i have 3 different size pipes... i guess if i ever needed to i could just heat it up again and pull apart.

Not hard to make another seal, plus i do't see a reason why i would have to take it all off again..

There's more then one way of doing things.

[craigvk]

vkberlina (Scott) would have done a similar or better job than I have. I think he has done his exhaust in about 3 sections with flanges. It just makes dismantling the exhaust system easier. Well, it's easier with a 6 cylinder seeing you only have a single tube after the flanges unlike a V8, but it just makes it easier.

On a number of occasions I have needed to take my headers off and it would be a complete bugger if it was welded to the main 2 1/2" pipe.

I look (personally) at managing an exhaust system this way (without looking at Scott's way of doing it, I don't know for sure):

Have a flange at the end of the header.

Have another one half way between the first muffler and the header flange.

And finally have another flange half way between the first muffler and the second muffler.

That would be my ideal setup.

[synoptica]

So you've managed to prevent the noise by replacing the rubbers?

The noise you describe really sounds like the car's pinging to me... sounds like a dull pipes-banging-together noise. Especially since you say it happens at low revs and around corners - when the engine's under load.

[Goon]

Are cats bolt on ? or do they have to be mig'd on ?

[craigvk]

My front cat is mig'd and where it is on the hotdog muffler, it is held by a clamp.

[Outlaw Torn]

Please forgive the ignorant, but what is a "CAT", (besides the things u aim for on the road)

[craigvk]

Dolphin, this link will tell you all about the different exhaust types:
http://en.wikipedia.org/wiki/Catback_exhaust

It's just an exhaust arched like a cat's back.

[Goon]

Thanks mate

[Outlaw Torn]

Thanks mate

Amen to that Goon. Thanks Slim

[craigvk]

No problemo.