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Old 06-24-2007, 11:35 PM   #1
OB2
Scooby Newbie
 
Member#: 51500
Join Date: Dec 2003
Vehicle:
1999 impreza rs-t
sylver

Default GT3071R vs GT3076R???

I want 400HP potential and as fast spool as possible what turbo should I use???

If you use one of those turbo can you tell me your fealing and at what RPM they spool???
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Old 06-24-2007, 11:39 PM   #2
norexyet
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Member#: 39149
Join Date: Jun 2003
Chapter/Region: Tri-State
Location: Wild Rides Race Cars
Vehicle:
11 elantra
yea i said elantra

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Was it necessary to post this in 3 forums?? The 3076r will work fine. Just look at any dyno charts from a perrin 30r kit.
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Old 06-25-2007, 02:03 AM   #3
NSFW
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Member#: 140444
Join Date: Feb 2007
Chapter/Region: NWIC
Location: Near Seattle, WA
Vehicle:
05 Stage Free LGT
ATP 3076, 6MT, AVO FMIC

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400whp or 400chp?
Pump gas? Pump + AWI? Race gas?
2.0L or 2.5L? (sorry but I'm not familiar with the 1999 Impreza)

http://www.turbobygarrett.com/turbob...30/GT3071R.htm
http://www.turbobygarrett.com/turbob..._700382_12.htm
http://www.google.com/search?q=how+t...ompressor+maps

CN: 3071 is good for 47 lb/min, 3076 for 52 lb/min, you'll have to look at the maps to know more.

10chp per lb/min is possible, but perhaps optimistic. The relationship between whp and chp is the subject of much debate, but "whp = chp * 0.8" will get you in the ballpark.

Has anyone here seen a dyno plot from a properly-functioning 3071R in a Subaru? I haven't seen any yet, but Blouch just released theirs, so more data should be available soon.
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