Rasp at 3000RPM

Does anyone else have a rasp coming from there exhaust from 2500-3000rpm?

It's always been there on mine but since i got my new muffler, you can hear it more.

It got worse when i snapped 2 of my heat shield bolts, do you think it could be the heat shield rattling against it?

I do get a strange noise at them revs. I think it's just the 3SGE noise.

I was next to an Altezza today at the lights and he had a 3SGE beams with a fart can on the back, it had the same noise as are 3SGE's.

I'm assuming your talking about the tinny rasp?

sure do, sounds horrible. Its a nice sound once passed it though

I get the tinny noise but i'm also getting something else, it actually sounds like it's a rattle coming from the rear muffler, shall have to check it out tomorrow.

Thanks

you should check your heat shield above your muffler. the resonance might be causing it to tap against the metal

also check that your cat is ok, also check that nothing is hitting against anything.

rollaboy wrote:

you should check your heat shield above your muffler. the resonance might be causing it to tap against the metal

Just checked now. It wasn't hitting it but i removed it for a test and its better but not completely gone. I think the shield makes it echo more.

slammed_celica wrote:

also check that your cat is ok, also check that nothing is hitting against anything.

I checked this aswell, seems fine but the inside has probably had it, after all it is a 20 year old car

Thanks again guys

Like i said, every ST182 i have been in has that noise at that RPM. A well made exhaust system will sort it.

Im going for a long resonator, either a De-cat pipe or a sports cat with an Apexi N1. Possibly another resonator to silence it. Am also going to replace all gaskets, etc.

Im also going to use mild steel, stainless steel rasps like nothing else

3Spower wrote:

Like i said, every ST182 i have been in has that noise at that RPM. A well made exhaust system will sort it.

Im going for a long resonator, either a De-cat pipe or a sports cat with an Apexi N1. Possibly another resonator to silence it. Am also going to replace all gaskets, etc.

Im also going to use mild steel, stainless steel rasps like nothing else

I have been in another 182, it had the rasp but nothing compared to mine, i have a feeling the exhaust is hitting agains't the crossmember

Thanks for the replies everyone, i have found the problem(s).

1. The exhaust is hitting against the crossmember

2. Cat is on its way out and the baffles have collapsed giving it the tinny sound.

One thing i have noticed is when the car has warmed up, the tinny sound goes and leaves an ordinary rasp

Celica_XR9145 wrote:

One thing i have noticed is when the car has warmed up, the tinny sound goes and leaves an ordinary rasp

Probably due to the cat heating up and i have always noticed my exhaust sounding far better once the car has warmed up.

3Spower wrote:

Celica_XR9145 wrote:

One thing i have noticed is when the car has warmed up, the tinny sound goes and leaves an ordinary rasp

Probably due to the cat heating up and i have always noticed my exhaust sounding far better once the car has warmed up.

Yea, i will just have to put up with it for now until after christmans.

I also just removed the silencer and now sounds far better

Celica_XR9145 wrote:

3Spower wrote:

Celica_XR9145 wrote:

One thing i have noticed is when the car has warmed up, the tinny sound goes and leaves an ordinary rasp

Probably due to the cat heating up and i have always noticed my exhaust sounding far better once the car has warmed up.

Yea, i will just have to put up with it for now until after christmans.

I also just removed the silencer and now sounds far better

You'll most probably notice better fuel economy aswell as performance, have you reset your ECU?

3Spower wrote:

Celica_XR9145 wrote:

3Spower wrote:

Celica_XR9145 wrote:

One thing i have noticed is when the car has warmed up, the tinny sound goes and leaves an ordinary rasp

Probably due to the cat heating up and i have always noticed my exhaust sounding far better once the car has warmed up.

Yea, i will just have to put up with it for now until after christmans.

I also just removed the silencer and now sounds far better

You'll most probably notice better fuel economy aswell as performance, have you reset your ECU?

Sorry for the late reply, yes i have but doesn't really need it. Just needs a tune up.

Ive found 'most' of the problem, under the headers is another heat shield and the shield has rusted away from the rusty bolts so now looks like this:



(Will take a photo tomorrow)
So now flaps against the exhaust pipe so need to get it welded back together

Just get a massive metal hose clamp and wrap it round tight

3Spower wrote:

Just get a massive metal hose clamp and wrap it round tight

Yea have seen that done on a catylic converter heat shiel and worked quite well, might do that.