Tuesday, March 23, 2010

3071r Setup for Max Response

Steve Shadows (Zilvia.net)

In regards to the original thread questions regarding the GT3071R - keep these things in mind for your setup

1. Keep the stock IM (stock im or long runners and small plenum mean more VE efficency in the low end and mid range) Larger plenums only help when they are used to accomodate a very very large compressor and a higher rev range (ie 8500 -9500 setup)
2. Use a standard T04E housing for the compressor on the GT3071R - do not use the ported housing (it's a surge protector which you do not need if you are using a properly placed bypass or blow off valve - and the T04S houinsg should not be used unless you are trying to use the turbo for drag racing - more top end squeeze on ponies but at the cost of slight delay on - onset).
3. For response - Ask for a .48 Housing use 256 Cams - Crank the boost to 20 PSI - just another idea. I have seen this work amazingly week while still seeing 380 whp on a dyno dynamics (about 440 whp on a dynojet and about 420 on a dyna pack )

So the perfect turbo for a 2.0 liter SR for drifting and output IMO is a .48 Housing - custom machined with a T04E compressor housing custome fitted on a GT3071R - using a single scroll manifold with a large single bypass valve (PWR makes a great one) right in front of your throttle body ( which should be a Q45) and running 100 octane with 20 - 22 psi all the time - with a stock Nissan Intake Manifold - a Power FC or Haltech tuned on a steady state dyno.

Expect insanely fast spool up with excellent transient response (better than a .78 ar twin scroll) and the possibiliy to reach 400 WHP @ 25 PSI

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