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Old 04-19-2012, 08:46 PM   #1
Scooby Guru
Member#: 36080
Join Date: Apr 2003
Chapter/Region: South East
Location: Raleigh, NC
2005 Volvo V70R

Default Turbo selection advice for built motor (Block: EJ22t / Heads: EJ207 STi Ver.7)

Those of you that are "turbo savvy", offer your opinions. But please provide references when possible. I try to take "facts" on forums with a grain of salt unless they have references to back up certian claims, etc.

Anyway, I am currently having an engine built for my STi by TurboTime in Cary, NC...

The engine will be as follows:
- EJ22t block
* Manley H-beam rods
* Manley pistons (9.8 static C/R)
* Cosworth high volume oil pump
* Moroso Aluminum Oil Pan

- EJ207 heads - (Stock 06 STi intake manifold & fuel rails)
* Crower Stg. 2 cams
* Manley Beehive Springs & Ti retainers

Planning on a nice smooth power delivery all the way to redline (not looking for a big "hit" of torque but rather very linear "ever increasing" powerband). Probably will never see more than 400whp (realistically probably closer to about 380whp). Looking to have atleast a few maps tuned into the ECU. One "mild boost" street map for 93. A more agressive map on 93. And a track map tuned for either a 50/50 mix of 93 and E85 or 100% E85 (haven't decided which way to go with this yet - still learning about the workings of E85 and possibly mixing fuel)...

The car is going to be used as a weekend play toy and HPDE track days. Ultimately I want to compete in One Lap of America with it...

Planning on staying stock location turbo, TMIC, side-feed, etc...

So the main question is, what turbo would be the best stock location turbo to meet my power delivery desires?

Turbotime has recommended I look into the GTX2867r, the GTX3071r and the GT3076r... Honestly I am learning and ultimately I will probably go with what Turbotime says. But I am wondering what the rest of the Engine Build forum here thinks and why...

Give me something to read guys I love learning!!


EDIT: Alittle something I found...

Turbo Selection Calculator

Last edited by GreenMarine; 05-16-2012 at 04:42 PM.
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