W.T.F. is a screamer pipe
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17-03-2005, 06:58 PM
#12
https://passionford.com/forum/viewtopic.php?t=98368
It basically works as a exhaust gas release pipe for turbos that run an external wastegate. With a standard T3 for example it has an internal wastegate so the screamer isn't needed. When u go up in turbo sizes to something like a GT35 this kind of turbo works with an external wastegate. The turbo its-self will look bigger and meaner than a smaller t3/t34 version but it wouldn't have an actuator attached to the side of it. (this there is no wastegate inside for it to hook onto!)
Turbos like the one i mention (GT35) have to have a different exhaust manifold made which a external wastegate will fit on to.......the external wastegate will control the boost when driving along as it would do on a standard smaller internally wastegated turbo. The way a screamer pipe works in that the external wastegate will have a pipe venting exhasut gases out of it...this is usally plumbed back into the exhaust further down the exhaust elbow..But in some cases's the pipe is made longer and gets vented to atmosphere under the car and not joined back up to the exhaust. This is whats called a 'Screamer pipe'. You won't see many people have them as they can pump out around 120db when there on full chat and the usual noise limit for a trackday in this country is 95/100 db!
Hope you understand!
It basically works as a exhaust gas release pipe for turbos that run an external wastegate. With a standard T3 for example it has an internal wastegate so the screamer isn't needed. When u go up in turbo sizes to something like a GT35 this kind of turbo works with an external wastegate. The turbo its-self will look bigger and meaner than a smaller t3/t34 version but it wouldn't have an actuator attached to the side of it. (this there is no wastegate inside for it to hook onto!)
Turbos like the one i mention (GT35) have to have a different exhaust manifold made which a external wastegate will fit on to.......the external wastegate will control the boost when driving along as it would do on a standard smaller internally wastegated turbo. The way a screamer pipe works in that the external wastegate will have a pipe venting exhasut gases out of it...this is usally plumbed back into the exhaust further down the exhaust elbow..But in some cases's the pipe is made longer and gets vented to atmosphere under the car and not joined back up to the exhaust. This is whats called a 'Screamer pipe'. You won't see many people have them as they can pump out around 120db when there on full chat and the usual noise limit for a trackday in this country is 95/100 db!
Hope you understand!
17-03-2005, 08:06 PM
#15
It Wasnt Me!
yea im sure one like that has been made with a sort of butterfly on it so it can be changed from atrmosphere or venting back into the exhaust further back, sure itsmeagain posted pics of a skyline with one fitted.
17-03-2005, 08:34 PM
#18
DEYTUKURJERBS
Not quite, i posted that actuator controlled butterfly valve that went into your exhaust opening up a seperate route once on boost, making it less restrictive.
Think Rod tried one and it was shit.
If your ever doing trackdays, dont have one, simple as, just get a suitably unrestrictive but quiet exhaust made, tho thats not as simple is it seems if you got 500+bhp
Think Rod tried one and it was shit.
If your ever doing trackdays, dont have one, simple as, just get a suitably unrestrictive but quiet exhaust made, tho thats not as simple is it seems if you got 500+bhp
18-03-2005, 04:26 PM
#22
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Thanks for the info.It's the first time i've had anything to do with external gates but it is getting clearer now.120db sounds about right.
18-03-2005, 05:28 PM
#24
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Not seen it yet but just had that Screamer pipe remade and FULLY silence, now exits after 2 silences by the passenger door. Was VERY VERY loud before. The car should now be SUPER quiet...
But will be able to take of the silencers and run straight to atmo for loud days like TOTB and Nat day
Was all done today, pick it up tomorrow and wil take some piccys
But will be able to take of the silencers and run straight to atmo for loud days like TOTB and Nat day
Was all done today, pick it up tomorrow and wil take some piccys
18-03-2005, 05:31 PM
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Originally Posted by Porkie
Not seen it yet but just had that Screamer pipe remade and FULLY silence, now exits after 2 silences by the passenger door. Was VERY VERY loud before. The car should now be SUPER quiet...
But will be able to take of the silencers and run straight to atmo for loud days like TOTB and Nat day
Was all done today, pick it up tomorrow and wil take some piccys
But will be able to take of the silencers and run straight to atmo for loud days like TOTB and Nat day
Was all done today, pick it up tomorrow and wil take some piccys
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