making a screamer pipe

[McCARTHY]

would you get away with a sreamer pipe on track?

[CraigN]

unlikely at most places, unless you drive off boost arround the sound sensors

[MikeLMR]

Indeed rally turbos also tend to use "maram" shafts much stronger to withstand the higher exhaust temps caused by running "anti lag"

so they can take a bit of compressor stall

different materials is all part of it, larger thrust bearings also play a big part (I see some turbo\'s are quoted as having 360 degree thrust bearings for example, I guess that means that they have a full 360 degree thrust bearing pad rather than a few smaller pads that won\'t take as much load.

the material you are thinking of is Mar M 247 (there are other grades) the Mar M stands for Martin Marietta Corp, who are part of Lockheed Martin

[BlitzBoy]

Rally cars have turbo\'s designed to run like that and only do a few hundred miles under boost ... as I said they will not last as long as turbo that has not been subjected to a surge everytime you shut the throttles on it under boost.

just because somthing doesn\'t break the first time it surges (or 10\'000th time) doesn\'t mean that it\'s life isn\'t being reduced.

So why dont they fit a bov which only costs a couple hundred pounds to safeguard reliabilty during the rally competition??

I ran without a BOV for 7 thousand miles no problem at all.

I havent seen any pictures or eveidence on all the forums and articles I have read showing damage due to compressor surge.

Granted it wont harm to have a BOV fitted, but I rather have the performance advantage of not having one fitted

[CraigN]

those Marm 247 shaft things are like over £1000 for just the shaft.

So if they have a turbo made out of materials youd usually see NASA using then they dont really expect it to break in one days use

[pete sparrow]

Jon
 If you need a car to look at complete with screamer,i can pop round sunday after Santa Pod??

[stylus350]

Nah.. you don\'t need a screamer pipe.. just get one of these.. http://www.vroombox.com/

"Instead of paying $500-$700 to improve the exhaust sound with an aftermarket Cat Back why not pay $159 and make your RX-8 sound like a 71’ Hemi Cuda?”

 :Hammer   :rollin

[Mr J.T]

sounds like a plan pete. gonna have a gander at your wi setup too mate.

[pete sparrow]

sounds like a plan pete. gonna have a gander at your wi setup too mate.

No worries. Your going sunday aren\'t you??

[Mr J.T]

yup yup but might be going saturday too:)

[pete sparrow]

Let us know if you do go saturday,i wont be leaving early to rush to get there.Aim to be there for 11 ish. Could drive up together.Is Dave going??

[G@NDY]

Pete you show queen :p
 wish mine was bloody fixed would have liked to have done every show this year myself. the joy of owning rotaries eh!! :bandit Its not the same turning up in the super fly pug, although it is rather super fly :wave

[Red and Single]

Let us know if you do go saturday,i wont be leaving early to rush to get there.Aim to be there for 11 ish. Could drive up together.Is Dave going??

Not sure if you mean me?
But I\'m going !! I think a mini convoy is in the offing.....should be nice and sedate just like the last one :rollin

[pete sparrow]

Pete you show queen :p
 wish mine was bloody fixed would have liked to have done every show this year myself. the joy of owning rotaries eh!! :bandit Its not the same turning up in the super fly pug, although it is rather super fly :wave

Hi Andy
 Whats wrong with your baby now? Thought you had her running sweet at RS3? Your pug is special no doubt!! :god

[pete sparrow]

Not sure if you mean me?
But I\'m going !! I think a mini convoy is in the offing.....should be nice and sedate just like the last one :rollin

Hi Dave
 Yes meant you,good idea on the mini convoy,might only be 3 cars,see if we can drum up some more interest! :yes  :Thumbs-up