Rb26 Turbo Upgrade, All Dyno Results

[Jc052685]

How you achieved 760 to 780 engine horsepower is beyond anything I've ever witnessed or believed was possible.

From memory 5's run right outta puff at about 360hp each at around 2 bar. Your running less boost and tiny injectors but are able to find 40 to 60 hp more?

I reckon theres a sneaky 70hp wet shot thrown in there just quietly.

They are rated at 360 hp at the highest rpm that Garrett tests them at. Not the max that they will physically flow.

[mr skidz]

They are rated at 360 hp at the highest rpm that Garrett tests them at. Not the max that they will physically flow.

The RPM in this case is dictated by the boost your running which is 25psi.

How else do you make a turbo spin faster you raise the boost

Edited February 18, 2016 by mr skidz

[Jc052685]

The RPM in this case is dictated by the boost your running which is 25psi.

How else do you make a turbo spin faster you raise the boost

Or raise the flow...

Boost pressure is nothing more than a measurement of restriction to flow.

[mr skidz]

Or raise the flow...

Boost pressure is nothing more than a measurement of restriction to flow.

how are you raising the flow without raising the boost these garretts are measured up to 3.1 bar absolute which is obviously 2.1 bar of boost which is 30.45 psi and are living at 165,000 rpm that's the end of the road for this turbo.

For you to make your Power claim you would need to exceed this pressure which you haven't done because they physically won't do it.

[Jc052685]

Or....... if you follow the graph to the right. More flow.

Whatever you are used to seeing people do with these motors obviously requires more pressure to overcome its flow restriction than this motor does.

[fatz]

And what makes you say that?

its well known that american hp reads high compared to aus

[Jc052685]

Well I can tell you this. My 550whp RB25 powered S14 ran a 10.9 @ 129mph. This car puts my S14 to shame.... Currently prepping it for a drag strip outing.

[mr skidz]

Or....... if you follow the graph to the right. More flow.

Whatever you are used to seeing people do with these motors obviously requires more pressure to overcome its flow restriction than this motor does.

The compressor map that I just showed you is of the turbo on a bench on its own, not on an engine.

the turbos compressor wheel doesn't get more efficient or grow in size by adding it to an amazing engine.

[fatz]

gues we shall see at the drag strip

assuming 3rd doesnt go bye bye

[PranK]

Guys please discuss elsewhere. This thread is not for banter.

[Jc052685]

The compressor map that I just showed you is of the turbo on a bench on its own, not on an engine.

the turbos compressor wheel doesn't get more efficient or grow in size by adding it to an amazing engine.

But it will physically spin faster than what they tested it to, correct?

Wonder how the Z32 guys are making well north of 500whp these days on stock turbos?

[frostyboy]

Even if the results are not accurate PranK?

[PranK]

Even if the results are not accurate PranK?

Well, thats hard and makes it difficult to keep a 'results only' thread. Maybe create a thread just for this discussion and link to it from here? Then people can keep reading if they want or skip over if they don't care?

(Thats a legitimate question - what do you think?)

[Jc052685]

Well, thats hard and makes it difficult to keep a 'results only' thread. Maybe create a thread just for this discussion and link to it from here? Then people can keep reading if they want or skip over if they don't care?

(Thats a legitimate question - what do you think?)

Good idea....

You guys trust Mainline dynos?

[Jc052685]

And here is the link


http://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/

[GTR180]

R33 GTR motor in a 180sx drift car

Built motor

Je 87mm pistons

Eagle rods

N1 oil pump with collar

6 boost manifold

Hks 50mm gate

Garrett gt3582r with a couple of chipped teeth on the rear wheel

1600cc injectors

United E85

Greddy profec B spec s boost controller

Standard head with standard cams

Makes 585hp / 437kw 25psi boost.

Edited February 18, 2016 by GTR180

[etang789]

It was done on Dynapack Dyno

468whp

414lb-ft

1.4bar boost

Engine:

- N1 Block

- HKS GT-SS

- Jun cam 272 in/ex

- Tomei Cam Gears

- Fluidampr Crank Pulley

- HKS 1.2mm metal head gasket

- Nismo fuel pump

- OEM Fuel Rail

- ASNU 750cc injectors

- OEM Fuel Pressure Regulator

- HKS intercooler pipping

- Trust intercooler

- OEM BOV

- Trust radiator

- Mine's Front Pipe Pro and Mine's Slience-VX Pro Titan III and Venom 100Cell 5" Body High Flow Catalytic Converter

- Nismo super copper mix clutch

- Haltech Platinum PRO Plug-in

Edited February 22, 2016 by etang789

[JGTC]

I know this is to log results for aftermarket turbos, but in-case anyone is interested

Car is a '02 R34 GTR M-spec, tuned by Mark at MRC in Castle Hill.

Compression was 175 +/- 2 across all 6

Mileage: 105,000kms

Final result was 267.9rwkw @ 16psi (front driveshaft removed to preserve the front diff)

Mods include;

Exhaust / Intake
- Amuse R1 Titan Extra cat-back exhaust 90mm
- Apexi Super Catalyzer Cat
- Mines Pro front pipe (2 x 70mm into 80mm)

- Tomei dump pipes
- Nismo inlet piping
- OEM Airbox with Nismo Snorkel

Ignition / Fuel
- Sard 650cc top-feed Injectors
- Splitfire coilpacks
- Wiring specialties coilpack harness
- Nismo 255L fuel pump

Engine / Turbo
- Garrett 14psi Actuators

- Stock Turbos

Next on the list is;

- Garret -9 turbos (standard turbos are on their way out)
- Nismo AFMs (standard AFMs are maxed out)
- Jun adj. cam gears (sourced 2nd hand)

- Nismo Engine & Gearbox mounts

- Koyo HH Series 48mm radiator

- Possibly Extended Sump by hi-octane - considering this one - http://www.hioctanedirect.com/index.php?main_page=product_info&cPath=67_74&products_id=1643

- Re-tune

Edited March 1, 2016 by squareznboxez

[mr_rbman]

Rebuilt forged motor

R34 GTR N1 turbos (2860-7's)

Sard 650cc injectors

Walbro 460lp/h fuel pump (12v direct feed)

Splitfire Coilpacks

Blitz SBC

Nistune ECU

Nismo AFM's

Standard airbox with K&N panel filter

Greddy adj. cam gears (2deg. advanced on inlet, 4deg. retard on exhaust)

Full custom exhaust (2.5" twin dumps with separate wastegate collector (350mm long split) into 3" collector, into 3.5" cat delete all the way to the end with x2 custom mufflers.)

Looking at the graph it looks to me like these are making full boost quite a bit later than other cars with similar setups...

I'll post this in my 'build' section so as not to comment in this section...

Edited March 8, 2016 by mr_rbman

[nakameguro]

I did a dyno run yesterday to get a base power figure before upgrading the turbos and getting a good tune.

93 BNR32

Mods:

HKS EVC

APEXi PFC

HKS Exhaust

SARD Metal Cat

R34 Turbos ceramic

Spitfire Direct Ignition System

HPI R35 AFM

TRUST/GReddy Intercooler

Tomei Type-R Poncams + Cam Gears

Nismo 555cc Injectors

Nismo Fuel Pump and FPR

ARC airbox

Nismo coppermix twin plate clutch.

Currently the car is running rich.

Dyno run boost at 1.1 bar, 238.3kw @all 4 wheels, with 351ft/lb torque.

which is calculated at 298.7kw at the crank (400hp) , and 48.6kgm

power curve wheel and crank:

Torque curve:

406ps at the crank

Edited March 20, 2016 by nakameguro