The Ultimate Gt3540 Powered Street Rb30?

[STATUS]

We had a pretty phenomenal RB30 in last night, the brainchild of a good customer. This is a daily driver, home build and complete credit to the guy. A quick look at the results and im sure you will be astounded at how qiuckly it makes boost and how broad the power and torque curve are... i have NEVER seen any 6 cylinder pull within a 1/3rd of the low end torque this thing does (no gas). On the road this car will fry the tyres in 3rd from 3000rpm..... with only a stab on the throttle boost is instantanious.

Any one care to guess what the secret is?

Edited May 9, 2009 by URAS

[STATUS]

oh just for interest here is an identical (minus the polariser) setup GT3540 rb30 for comparison

Reference numbers on bottom of graph are set to show difference in power and torque @ 3000rpm

Torque 268nm vs 532nm ! This torque is more than most rb25 and 26's make @ peak

Power 84rwkw vs 167nm !

Edited May 9, 2009 by URAS

[paulr33]

diff gears or VCT on 26 head

[mico]

6boost manifold ?

[STATUS]

diff gears or VCT on 26 head

diff gears, 3.08:1. No vct.

[RBLUV]

1.6 bar at 3000 omfg

[SimonR32]

proper twin scroll turbo set up

[NYTSKY]

E85?

[juggernaut1]

No semi slicks.... .....and based on your comments of instaneous boost......I'd say....twin scroll and also judging by the shape of the curve i.e. virtually no discernable difference in the curve between boost and off boost and linear power delivery over a broad rev range.

Edited May 9, 2009 by juggernaut1

[Bliksem]

quick spool valve such as http://cgi.ebay.com/ebaymotors/SP-Quick-Sp...emZ300308199659 ??

[MBS206]

Higher compression ratio...

[fatz]

small rear housing stock cams

1.6 bar for 350rwkw

thems alot of boost

[VB-]

X2 for spool valve. or possibly something like an eaton M90....?

[bigmikespec]

Modified GT3540 with Variable Vane Geometry

[3LGODZILA]

no i am not serious :laughing-smiley-014:

[Mr. Untouchable]

nozzz

nice work torretto

[PM-R33]

Let us know so we can all go do the mod

[STATUS]

X2 for spool valve. or possibly something like an eaton M90....?

haha yeah, toyota charger run by the haltech via NOS control (load rpm etc) then via a differential valve into the cooler, when the turbo boost exceeds the charger boost it is business as usual.... of course everything is also compounding so boost builds very quick. The charger drag seems to rob about 10-12rwkw from the top end. A few hours on the dyno and the boost switching/ load point is almost impossible to pick which was a big suprise for both of us.

The graph above of the the 2 rb30's is actually the same car before and after.

I have NEVER been in a car that builds boost and torque so rapidly other than BIG dollar supercharged v8's, its a real credit to luke.

Edited May 9, 2009 by URAS

[zebra]

Sounds like quite a tricky setup...and much better than trying to ram the turbos boost through the little toyota blower.

Do you have any photos of the setup?

It really does sound like a Sequential Turbo Supercharger Setup.

Have you thought about using an aircon clutch on the blower snout like the Castlemaine Rod shop setups for v6 commodores. so you're not losing power by running the blower after the turbo takes over?

[STATUS]

Have you thought about using an aircon clutch on the blower snout like the Castlemaine Rod shop setups for v6 commodores. so you're not losing power by running the blower after the turbo takes over?

it has, thats what the NOS control on the haltech is taking care of.... in 3d... not just running off a rpm or boost switch.