best rear housing a/r for single turbo?

Discuss the RB20, RB25 and RB26 series engines.
drftnrps13
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Joined: Fri Sep 07, 2007 12:53 pm

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ok got an rb26 in my s14. im using this car/setup strickly for drifting. it a stock rebuilt motor just with power fc d-jetro(no mafs) and a single turbo conversion. looking for 400rwhp but want amazing response. looking to rev to 8k also. i want instant low end power but supporting power to 8k rpm. i was looking into the gt30r dual ball bearing turbo but dont know what ar i should get for the rear? .63 .70 and up from there. please helpthanks, paul


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S14-NEO
Posts: 1385
Joined: Wed Feb 16, 2005 6:38 am
Car: 1995 nissan 240sx RB25 NEO powered

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ive got .63 exaust on mine and she works jsut fine for me...boost comes in quickly...will tend to be somewhat small for big power on the top end but your mainly for drifitng so you will be fine with that.

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WhatsADSM
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Joined: Fri Jun 10, 2005 5:27 pm
Car: 1998 240sx

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Yea 400whp really isnt much at all a .63 can easily flow enough for that.

So yea a 3076r with a .63 hotside should be more than sufficient. You should be seeing full boost in the low to mid 3000s, and capable of right around 500whp if you really need it.

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BoostFab
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Car: S13cp, S13fb, S14z
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for the rb25 & 26 , i think a .68a/r on standard bearing is ideal and .95a/r on GT BB counterpart.

drftnrps13
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Joined: Fri Sep 07, 2007 12:53 pm

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ok thanks but what turbo foot print? i have a rull race manifold with a divided flange its been drilled for t4 and t3. so which one to use? t3 .63 ar or t4 .63 ar? thank u all

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BoostFab
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what ever turbo flange is on your manifold. since your case it suit both t4 and t3, i would get a t4 version

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Carl H
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Joined: Mon Aug 04, 2003 4:09 am
Car: 1995 Nissan 240SX SE RB30DET

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gt3076r with atp's divided t3 footprint exhaust housing.done.


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