S12OC UK Forum  
S12 World Affiliate Program
S12 United Kingdom / Club-S12 International / / S12 France / S12 Eastern Europe / S12 Sweden

Go Back   S12OC UK Forum > Main Categories > S12 Discussion
User Name
Password
FAQ Members List Calendar Today's Posts

Reply
 
Thread Tools Display Modes
  #11  
Old 08-01-2009, 17:16
CNHSS1's Avatar
CNHSS1 CNHSS1 is offline
PAID MEMBER
 
Join Date: Jan 2006
Location: shrewsbury
Posts: 606
CNHSS1 is an unknown quantity at this point
Default

silencing a seperate EG exh is perfectly possible and common on some of the 80s serious Porsche and Audi race cars. look at using 2 stroke moped/small bike silencers as they shoudlnt be restrictive. also be sensible with the outlet. point it at the tarmac below the car and a lot of the noise is 'lost' as far as db sound meters are concerned. have it sticking out the bonnet or at the kerbside will only cause the track noise nazis to get uppity lol
__________________

Racing is life. Everything else, before and after, is just waiting.
- Steve McQueen
Reply With Quote
  #12  
Old 08-01-2009, 17:21
sideways danny sideways danny is offline
Super Moderator
 
Join Date: Feb 2006
Posts: 535
sideways danny is on a distinguished road
Default

dont need to think about an external wastegate at that power IMO. FAR worse issues to think about first, like management/fueling (you'll need bigger injectors) intercooler, exhaust.

A T28 from an s14 on the standard manifold should do what you're after
Reply With Quote
  #13  
Old 08-01-2009, 17:27
CNHSS1's Avatar
CNHSS1 CNHSS1 is offline
PAID MEMBER
 
Join Date: Jan 2006
Location: shrewsbury
Posts: 606
CNHSS1 is an unknown quantity at this point
Default

yep agree with Danny, the fabrication aint worth the grief
__________________

Racing is life. Everything else, before and after, is just waiting.
- Steve McQueen
Reply With Quote
  #14  
Old 08-01-2009, 18:01
CamInHead CamInHead is offline
PAID MEMBER
 
Join Date: Nov 2007
Location: Hemel
Posts: 713
CamInHead is an unknown quantity at this point
Default

Quote:
Originally Posted by CNHSS1 View Post
Its just a seperate exh from the wastegate itself to vent the extra gasses after the preset boost level has been reached. i think the yanks came up with the screamer term as once the ext wastegate opens the screamer pipe is essentially an unsilenced exh
ebay has loads of screamer elbows which arent the real deal (no performance advantage) they can sound a bit pants and often bugger up the idle/low speed running of the car. only way is a proper ext wastgate imho if you want to improve performance and reduce spiking

to stop them being loud, you can re-join the screamer pipe back into the main exhaust. best bet is to rejoin minimum of 5ft from the turbo though or itll be a restriction (two lots of exh gasses squeezed into one pipe straight after the turbo)

does that make sense? does in my head, but let me know and i will try and explain better
no I got that
__________________
Reply With Quote
  #15  
Old 09-01-2009, 06:35
xxxadzxxx's Avatar
xxxadzxxx xxxadzxxx is offline
PAID MEMBER
 
Join Date: Dec 2008
Location: wakefield
Posts: 81
xxxadzxxx is an unknown quantity at this point
Default

fueling is sorted, 444cc injecters, 255 pump and apexi safc all here and ready to go on, so is turbo and exhaust the next thing i should be doing. or have i over looked something?
Reply With Quote
  #16  
Old 09-01-2009, 21:25
CamInHead CamInHead is offline
PAID MEMBER
 
Join Date: Nov 2007
Location: Hemel
Posts: 713
CamInHead is an unknown quantity at this point
Default

Yopu haven't mentioned intercooling (in this thread) yet ?
__________________
Reply With Quote
  #17  
Old 09-01-2009, 22:12
xxxadzxxx's Avatar
xxxadzxxx xxxadzxxx is offline
PAID MEMBER
 
Join Date: Dec 2008
Location: wakefield
Posts: 81
xxxadzxxx is an unknown quantity at this point
Default

lol, cut a large hole in the bonnet and mounted a cooler there at 45 degrees
Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 00:54.

Powered by vBulletin®
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.