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compound boost

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  #21 (permalink)  
Old 05-14-2010 | 11:26 PM
ProjectMayhem's Avatar
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From: St. Louis, MO
Default Re: compound boost

Originally Posted by daithi2
gt42r is quite large for our setup and ball bearing. the blower will help spool the turbo but the lowest i would go is the GT32 . the gt3271 is a 51/64 .78ar. any r style garrett turbo is a ball bearing which requires oil and water, i would stick with journal bearing turbos.

it will be hard to tell what size you need to go with for least amount of lag, but i would stick with the oem pullies for stock blower boost levels and aim for 25# total boost with around 35-50 lb/min from the turbo.
You can size a turbo much larger than you normally could with an N/A 3.2. That blower makes this thing flow more like a 5.X liter V8.
 
  #22 (permalink)  
Old 05-15-2010 | 01:09 AM
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From: Atlanta, GA
Default Re: compound boost

Ive never seen a 5 liter make so little power, lol

you have to remember the enthalpy losses over 10ft of exhaust and intercooler piping.

you have to size smaller for a rear mount
 
  #23 (permalink)  
Old 05-15-2010 | 03:51 AM
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Default Re: compound boost

Here a cool article from hot rod magazine about a twin charged compound boosted GT500.
http://www.hotrod.com/techarticles/e...its/index.html

and plenty of 5.X liter N/A V8 motors have produced simliar numbers power wise to the srt6.
 
  #24 (permalink)  
Old 05-15-2010 | 04:01 AM
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Default Re: compound boost

for street driving, its way too laggy. these cars need transient response and more top end. a gt42 will turn the car into a pointless 4500-6000k dyno queen

and honestly , a 5 liter v8 throwing down that little bit of power is bad, considering we have a 7 liter small block making 600rwhp na.
 
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