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Thread: Think I went with too big of a turbo...

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Posts: 701-710 of 710
2011-10-22 17:35:07
#701
Originally Posted by ca18
maybe buy coheeds old set up.


Way ahead of you

Originally Posted by Vadim

Plan is to get Coheed's old GT3076r



Then I gotta start building the manifold. I hit a new snag with needing to backpurging. I already bought one bottle $250 later I don't want to buy another bottle just for argon. There are things like Solar Flux, but that turns into glass and can break off.
2011-10-22 18:43:01
#702
Its too bad FedEx doesn't ship on saturday
2011-10-23 02:02:33
#703
No worries, I got to really start building my manifold
2011-11-01 06:22:59
#704
HMMM is your P11 NA or turbo currently? What do you plan on doing with it?
2011-11-01 14:12:24
#705
Originally Posted by Scrildo
HMMM is your P11 NA or turbo currently? What do you plan on doing with it?


It's NA right now, it's slow, loud, rattly (SSAC DP pushing up the whole exhaust against the car body), and has an Interfooler. It's complete rice .

I received Coheed's turbo, will post up pictures tonight hopefully.

I am planning on running the log manifold with this turbo and doing a dyno test and tune. Then building a tubular manifold and doing a dyno run after.
2011-11-02 03:43:56
#706
On the stock cams I bet you will see 40-50whp gain on the tubular. But its all speculation. You guys don't seem to have the same availability to dynos as I do.
2011-11-02 04:10:35
#707
Hey coheed who built the manifold for your car?
2011-11-02 04:17:09
#708
Pasting this from my build thread, went with a little smaller turbo that is also ball bearing. Hopefully that will help with spool .

Originally Posted by Vadim
Got this turbo used from Coheed, it's in excellent condition.

GT3076r
Compressor: 57mm Inducer, 76.20mm Exducer, 56 Trim, .60 AR
Turbine: 60mm Wheel, 80 Trim, .63 AR

Compressor Map








Unfortunately the 4bolt housing is a little longer then my Precision one. This might not let me clear the AC line


I thought about using the Precision 5 bolt housing... looks like the turbine is smaller on the GT3076r, about 5mm smaller.


The GT30 turbine is longer though



GT3076r .63ar vs Precision 5431 .63 Exhaust Housing

GT3076r




Precision 5431


2011-11-02 05:22:41
#709
I can't hardly believe that the 3076r turbine is that small. Probably why the guys making really decent power are using the .82 housing for better flow.

If you change the housing, get the .82 Vband. Make fitment a breeze!
2011-11-02 13:29:59
#710
For comparison's sake:

Precision 5431 in the .63 AR housing



GT3076 in the same Precision .63 Housing
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