I thought a thread like this might help people decide on what route to take in turbo/turbine choice for what they want to accomplish with their car. Just copy/paste the following and fill in the blanks. Hopefully I'm not missing anything...


?rwhp @ ?psi-

Full boost @?rpm-

Turbo: compressor/turbine-

Engine-

Manifold-

Diff. Ratio-

Others affecting spool time-

HP unknown

10psi @ 3500 rpm
18psi @ 4000 rpm

Turbonetics T66 BB .70 AR

s50 8.5:1 bore 87mm

Cartech cast Manifold

Diff 3.15

Other: Tial 38mm and Blitz SBCid EBC

HP Unknown
99'M3
18psi @ 3500-3700 RPM
s52 9.5:1
GT35R
SPA (Audspeed) manifold
Tec 3R tunned, Tial 38MM wastegate, Tial 50mm BOV

The 328
5 Psi at 3500 RPM (need bigger injectors for more bost)
s50 10.25? (stock)
GT35R
SSautoChrome (XSpower) manifold (modified)
Greddy Emanage Ultimate tunned, Tial 38mm Wastegate, Tail 50mm BOV

< 3000 RPM :rofl

TRM S1
Boost starting at 2000 rpm.
5psi @ 2300 rpm
15psi (full boost) @ 2700 RPM

TRM S1
Boost starting at 2000 rpm.
5psi @ 2300 rpm
15psi (full boost) @ 2700 RPM

What kinda of Wastegate and Turbo does your setup have????

TRM S1
Boost starting at 2000 rpm.
5psi @ 2300 rpm
15psi (full boost) @ 2700 RPM

Such a sick kit Mike.

What kinda of Wastegate and Turbo does your setup have????

SPA turbo. Basically a T04E 57 trim. (exact specs in the other threads.)
.63 hot housing with a stage 3 wheel.

38mm wastegate, but using a bleed type boost controller FTL.

HP unknown

10psi @ 3800 rpm

Holset H1E large comp housing

M50 Stock 10:1 bore 84mm

SS Autochrome manifold to custom up pipe

Diff 3.23

Other: Tial 38mm

425whp/477wtq @ 13psi Mustang Dyno
Full boost @ ~2800rpm
T3/T4 GT30R .82/.60 DBB
s52
custom SS tubular manifold
10.5:1 (111 octane fuel)
3.46
Haltech e6x standalone

Once Stage IV Turbo System is done the spool will be closer to 5000rpm :rofl

425whp/477wtq @ 13psi Mustang Dyno
Full boost @ ~2800rpm
T3/T4 GT30R .82/.60 DBB
s52
custom SS tubular manifold
10.5:1
3.46

Once Stage IV Turbo System is done the spool will be closer to 5000rpm :rofl

How are you running 10.5:1 with 13psi?

How are you running 10.5:1 with 13psi?

very good tuning....

I thought he was also using 109 octane? 111? I forgot but remember that dyno being race fuel.

235whp/231wtq @ ~5.5psi

Full boost: 3250rpm on a dyno, street about 200rpms lower

Turbo: GT2871 .86 a/r

Engine: 1992 stock m50 non-vanos (FTW), stock CR, stock HG, stock everything

Manifold: T25 style TSI log manifold

Diff. Ratio: stock 3.23

Others affecting spool time: internal w/g and no boost controller

Here's my spool time as measured on ICS's dyno:

20g turbo...

holds and builds boost, much better on the road....

5psi 2000 rpm
14psi at 3500 rpm

790 hp pumpfuel / 950 racefuel

PT76GTS

S38B38 engine

How are you running 10.5:1 with 13psi?
That was with 111 octane fuel and good standalone tune with Haltech.

That was with 111 octane fuel and good standalone tune with Haltech.

haha ok good, you had me questioning myself on why im buying a thicker headgasket for 14lbs.

How are you running 10.5:1 with 13psi?
Rafa has been running 13 psi on 10.5:1 CR, stock head gasket, stock head bolts, and 93 octane pump gas.

holds and builds boost, much better on the road....

Eh, they all do that. :(

Dynos are very *not real life* like that, which is why I prefer road data.

Eh, they all do that. :(

Dynos are very *not real life* like that, which is why I prefer road data.
With a proper load bearing dyno, you can make it do the exact opposite if you wish, actually. The printout shown above is from an inertial dyno (Dynojet) that only has the mass of the drums as resistance, which (as Mike points out) is not the same load as seen on the street. In a constant speed or controlled sweep rate test on an eddy current dynamometer, you will likely see a much faster boost response with respect to time.

Additionally, the road load from wind resistance (aero drag) is what keeps the turbine speed up at high rpm more so than an inertial dyno. This is why the above graph also shows a significant drop in boost pressure at high speeds. On the road, this car likely continues with "flat" boost response or even possibly a little creep upward. A good load bearing (eddy current) dyno can also replicate this condition during testing. Hence the reason I insist upon them for proper tuning of turbo cars.

woot this is my turbo setup with a few tricks.. I hope I get spool that quick ill be sycd

SPA turbo. Basically a T04E 57 trim. (exact specs in the other threads.)
.63 hot housing with a stage 3 wheel.

38mm wastegate, but using a bleed type boost controller FTL.

I hope rukman doesn't mind, but this is the only GT35R dyno I know of, with the boost plotted.

<img src="http://mydrive.roadfly.com/blog/uploads/rukman_TTS3_20psi.jpg"/>

This is a TT Stage III kit. I would have expected the GT35R to spool much faster. This is on the ICS dyno..

Rafa has been running 13 psi on 10.5:1 CR, stock head gasket, stock head bolts, and 93 octane pump gas.



Eh, they all do that. :(

Dynos are very *not real life* like that, which is why I prefer road data.


13 psi stock motor on 93 octane = just a matter of time.:(

13 psi stock motor on 93 octane = just a matter of time.:(

would it be ok to run 13 psi with a thicker head gasket and water injection? sorry im a noob when it comes to FI , trying to learn

would it be ok to run 13 psi with a thicker head gasket and water injection? sorry im a noob when it comes to FI , trying to learn

you can run 13psi with just a thicker head gasket. Im going to run 14psi with a .140 headgasket made by vac.
www.vacmotorsports.com search for headgasket

Dakardave, what psi is that dyno at?

Dakardave, what psi is that dyno at?

Do you mean the TT Stage III dyno? The max psi was ~20psi... The max boost on that run was a little below 20psi...

-Dave

Do you mean the TT Stage III dyno? The max psi was ~20psi... The max boost on that run was a little below 20psi...

-Dave

Doesn't 500rwhp seem low for 20 psi with a GT35R?

And does anyone know which turbine A/R that kit comes with?

Doesn't 500rwhp seem low for 20 psi with a GT35R?

And does anyone know which turbine A/R that kit comes with?

seems about right to me:

~515rwhp on 19.7psi and 8.5:1 compression

Jon's monster M roadster, made 505rwhp on ~17psi and 9.1:1 compression... (OBD-II - GT35R setup)

So, it seems just about right....

-Dave

BTW, for those interested.. here's the orginal post on jon's setup..

http://forums.bimmerforums.com/forum/showthread.php?t=324067&highlight=OBDII

Everyone is just used to Card Counter's 600+rwhp with the 35r :rofl