Screamer Pipe

[gorgath]

Ok, What is the benefit of having it? Can it be done to our VR4? Pros and Cons? legalities (I presume it is illegal)?

 

[leebutts]

Isn't it a wastegate that vents excess boost to atmosphere instead of into the dump pipe?

If that's the case then you'd need custom dump pipes or external wastegates.

No idea what the benefit is other than improving flow of gases out of the turbo?

 

[jungle]

They are also illegal in every state in Aust.

Depending on your system it can help produce more power than an otherwise internally gated system like ours. However, its also very very loud and will involve a lot of work on our cars to produce.
I ran one on my nissan for 5+ years but then that car doesn't see a lot of road time
Its a $10 000 fine here in QLD as it doesn't go through the cat and you'll alo get pinged for noise.

Goodluck!

 

[Guest]

wtf? where did my post go...

i said all this.

 

[ygoslo]

Screamer pipe on stock VR4 turbos would be, um, annoying... Seeing as these cars are on boost as soon as you turn the key (only a slight exaggeration) there would be a lot of screaming going on!

 

[pu-11-me]

Screamer pipe on stock VR4 turbos would be, um, annoying... Seeing as these cars are on boost as soon as you turn the key (only a slight exaggeration) there would be a lot of screaming going on!

Couldn't agree more..... Its OK for single turbos where you only hear if you give it to it at higher RPM, but our cars i think it would just piss me off haha

I have been in a GTR skyline with stock turbos and screamers and it was just annoying Car was nice though

 

[frozen]

id love to hear twin screamers.. or does it sound the same as single

 

[Guest]

Isn't it a wastegate that vents excess boost to atmosphere instead of into the dump pipe?

If that's the case then you'd need custom dump pipes or external wastegates.

No idea what the benefit is other than improving flow of gases out of the turbo?

That's right. The exhaust from the turbine goes into your normal exhaust system, the exhaust from the wastegate goes to atmosphere.

Because our turbos have an internal wastegate it would be fairly expensive to get a *true* screamer pipe - you'd always have exhaust going to atmosphere even at idle.

This means something along the lines of welding the internal wastegate shut and fitting external wastegates, then fitting the scream pipe to the external wastegate. Disconnecting the pipe going from the intake tract to the wastegate *will* keep the wastegate closed (I'm sure), but welding it shut makes sure it doesn't open.

If you ask me, a proper exhaust system is a much better investment. Throaty but not loud when idling and driving, but when you put your foot down it breathes and makes a real noise. Just my 2 cents

 

[pu-11-me]

id love to hear twin screamers.. or does it sound the same as single

Its loud....

 

[Guest]

you would gain nothing from all the time and effort spent into putting twin external gates on the TD03's..

get some decent split dumps made up, front pipes, high flow cat, and a 3" cat back, and you will have all the exhaust flow you need, without being illegal or having it scream at you at low revs.

 

[jungle]

That's right. The exhaust from the turbine goes into your normal exhaust system, the exhaust from the wastegate goes to atmosphere.

Because our turbos have an internal wastegate it would be fairly expensive to get a *true* screamer pipe - you'd always have exhaust going to atmosphere even at idle.

This means something along the lines of welding the internal wastegate shut and fitting external wastegates, then fitting the scream pipe to the external wastegate. Disconnecting the pipe going from the intake tract to the wastegate *will* keep the wastegate closed (I'm sure), but welding it shut makes sure it doesn't open.

If you ask me, a proper exhaust system is a much better investment. Throaty but not loud when idling and driving, but when you put your foot down it breathes and makes a real noise. Just my 2 cents

Dude, thats so wrong i'm not going to comment

Yes i will, nope, not even close.

Lets start again, all a "screamer pipe" is instead of the wastegate exhaust joining the turbine exhaust in 1 pipe, the wastegate exhaust is vented to atmosphere via a different pipe. That's it, its that simple. It only makes "noise" when the wastegate is controlling boost.

I not sure what you're on about regarding welding wastegate shut and extra noise at idle, but i wouldn't mind some

 

[Guest]

Dude, thats so wrong i'm not going to comment

Yes i will, nope, not even close.

Lets start again, all a "screamer pipe" is instead of the wastegate exhaust joining the turbine exhaust in 1 pipe, the wastegate exhaust is vented to atmosphere via a different pipe. That's it, its that simple. It only makes "noise" when the wastegate is controlling boost.

I not sure what you're on about regarding welding wastegate shut and extra noise at idle, but i wouldn't mind some

?? That's what I said - screamer pipe vents to atmosphere directly from the wastegate instead of joining your turbine exhaust to form 1 pipe. Maybe I just explained it wrong - what you said is exactly what I mean.

What I meant about making noise at idle is because of the shape of the turbine housing (?) where your dump pipe joins. As an example

This turbo, with an internal gate, would be easier to make a screamer pipe from because you can *split* the exhaust between those gases coming from the turbine from those gases coming from the wastegate (screamer pipe would sit behind the wastegate on the left and vent to atmo, pipe sitting behind turbine on the right goes into normal exhaust).

This turbo, also internally gated, is hard to make a screamer pipe because to get a nice firm fit against the back of the wastegate would be near impossible. This means exhaust gases coming from the turbine will *leak* to atmo via your screamer pipe. I haven't seen anyone who's bothered to try fitting a screamer pipe to a turbine housing(?) like this.

And the bit about welding is that if you have this type of wastegate and want to fit an external gate you'd have to stop the internal gate from opening. One way to do this is to simply weld it shut and let the external gate to it's job. Problem is that you can't undo it.

No one here has ever welded the wastegate shut on an ET or Charade Turbo and watched the boost guage go nuts - and subsequently listen to it choke then BOOM? Meh, must be me

Sorry for the confusion

 

[ygoslo]

There's a video on youtube of a 6a12tt with screamers. Can't be bothered trying to find it though.

 

[Guest]

Sorry for flooding, found pictures! Both are custom pipes to make create a screamer pipe. Pipe 1 shows the screamer on the left, normal exhaust on the right (would match the first picture in my last post). You can see the "divider" I was talking about on the second image - doesn't look like it would have nice seal to me, hence a little extra noise at idle.

I am bad with words, so I'll let the pictures do the talking haha. Sorry for the confusion again.

 

[Tom]

Screamer pipes.. I considered this for a while.. but after numerous people telling me i would get over the noise, get done for it, or just in general get sick of it..

Meek said they dont do it, MRT said that they could but dont recommend it, etc etc..

I dont know what my mate in the Evo6MR or R32GTR have, but their spool is freakin loud and just screams.. But they both dont have screamer pipes.. So there are other options.. Theyre probably external wastegates or something..

 

[ygoslo]

Screamer pipes won't give you a big spool noise. That'll more likely be alloy intake and intercooler pipes and a pod.

 

[gorgath]

Reason I asked this because when I was heading for lunch and about to cross the street, I hear this roaring sound (more like jet engine sound) far away coming down at Sussex St going towards Chinatown and this pure black evo8 emerged to my eyesite ripping it up along Sussex St.

When he stop at the traffic light where I am to cross, I stopby and asked the guy what he have and he said screamer pipe. My curiosity got me interested hence asking a question.

 

[bradc]

Someone in NZ mounted two wastegates off the stock exhaust manifolds and had screamer pipes, it sounded insane, but it is a hell of a lot of work for no performance gain.

 

[Tom]

Screamer pipes won't give you a big spool noise. That'll more likely be alloy intake and intercooler pipes and a pod.

Yeah, nah what I meant was just the full loud noise that their car makes..

Whether it is loud spool or screamer pipe.. just meant loud noises lol


i think mostly screamer pipes are for the wank factor , just because they sound cool as haha and have no positive effect on gains or whatever

 

[Guest]

The only gain I can think of is that boost is less likely to spike, because the wastegate has absolutely no restriction in its operation. Never had one, can't verify that.