Hi, I was invited here. I'm Bi-turbocharging my 3.0RB H6!

[Arith]

Welcome to the forum! As the others have mentioned, you're the first to do to the 3.0 Liberty so there are a lot of eager onlookers awaiting the final results.

[MY07GT]

Its the DOCTOR!!!

Meet you at Hooters awhile back. You told me you wanted to turbo it, didnt really think anyone would go through with it!

Sounds and looks like a monster.

Phil.

[Spec B Wgn]

welcome to the forum ..

you must have deep pockets to be putting together that package..

Hope it works well..

[Digital]

I think I may need to change my pants....

welcome to the forum ..

you must have deep pockets to be putting together that package..

Hope it works well..

well he is a doctor.....

[DJC]

Yes welcome aboard. I too was at Pulse on Monday and Paul showed me your ride. Still needed tuning in, but sounded fantastic.

[DeMobBoss]

looks pretty impressive mate...
looks like we're gonna have to put another "car specific" category in.

Ok how do we do that? Then can we transplant this post over there? I don't mind either way - I just wanted to say you're Avatar is bloody hilarious!!!

Cheers,
Osanda

[DeMobBoss]

I think I may need to change my pants....

welcome to the forum ..

you must have deep pockets to be putting together that package..

Hope it works well..

well he is a doctor.....

Well not really I'm just a Quack!!!
But, seriously lets just say I've been planning to do this for a while now so been saving up all that time. Us doctors are generally pretty underpaid ya know...

Cheers

Osanda.

[DeMobBoss]

Its the DOCTOR!!!

Meet you at Hooters awhile back. You told me you wanted to turbo it, didnt really think anyone would go through with it!

Sounds and looks like a monster.

Phil.

Yeah thats right... I remember now - I too had a feeling you didn't really take me seriously hahaha most people didn't. Paul and I have been seriously talking about it pretty much since I took the idea to him in 2007 after seeing what the Perrin boys did in the US with a single turbo. Turns out Paul had met Jeff Perrin after SEMA 2005 and had clued up on how he might embark on a similar project way back then. So, then when we met in late 2007 the 'die was set' so to speak.
I'll have to bring the Bullit along to one of the hooters meets soon as I get it back from Paul.

Seeya,
Osanda

[DeMobBoss]

OH MY GOD!!!

I am in lust...my wife is going to REALLY hate you!

Please post or link to all the gory details.

Andrew

hahaha Mate just imagine how my wife feels!!! The key I think is to get her involved too. Glad you like it just wait till you see it in the flesh...

Off the top of my head - here are some details. I will do a formal toon details post later.
Dealership STI tune including: STI decals and Badges, Hitech STI mufflers, STI springs and lowering package and ongoing suspension/handling tuning c/f Pulse.
Halltech interceptor, Intake modifications including removal of resonator boxes. Full high flow/wide gauge extractors, cats and exhaust to accomodate torbos. Add two turbos + high flow intercooler, x2 custom air boxes.,HKS boost controller for LPT, Onboard windows mini tablet pc for Halltech interceptor mode control. For stage 2: low comp pistons with coolant port sealing of engine block plus high pressure turbo boost. for stage 3: cylinder bore and stroke. All within street legal limits
Thats all I can remember at this time its pretty undetailed I know - when I get time I'll sit down and list everything in more detail.

Cheers,
Osanda

[Spec B Wgn]

osanda... can i ask why the twin turbo though..

is it just to be different ??

im curious, intrigued and jealous & cant wait for the results.

[DeMobBoss]

osanda... can i ask why the twin turbo though..

is it just to be different ??

im curious, intrigued and jealous & cant wait for the results.

Yes there is a lot of controversy about this topic mainly in line with turbo size and inertia etc etc blah blah blah.

Twins was actually Paul's brainchild so he'd have his own reasons but
I felt twin turbos were worthwhile for the following research/reasons:

Turbos respond better to pulsing exhaust flow. When many cylinders dump into a common manifold the individual exhaust pulses are smoothed out/peaks and troughs cancelled out. Whereas, When we run two turbos one for each bank of cylinders with thier own individual manifold we effectively spread the pulses further apart per turbo thus increasing the amplitude of the pulses. Therefore, when the turbo is spooling up to speed, rather than receiving a constant push, it will get a series of vigorous shoves that help it accelerate faster thus reducing lag significantly.
....
"In V-type & flat cylinder layouts it is easy to visualise how superior exhaust flow will be into twin turbos.
"Also with exhaust flow divided, each turbo will run a touch cooler, which ultimately improves their service life."

All of the above also means better smoother power curves, means more everyday usable power bands that induce whiplash with just a twiddle of your toes.

Hope that answers your question,
Osanda.

[Spec B Wgn]

osanda... can i ask why the twin turbo though..

is it just to be different ??

im curious, intrigued and jealous & cant wait for the results.

Yes there is a lot of controversy about this topic mainly in line with turbo size and inertia etc etc blah blah blah.

Twins was actually Paul's brainchild so he'd have his own reasons but
I felt twin turbos were worthwhile for the following research/reasons:

Turbos respond better to pulsing exhaust flow. When many cylinders dump into a common manifold the individual exhaust pulses are smoothed out/peaks and troughs cancelled out. Whereas, When we run two turbos one for each bank of cylinders with thier own individual manifold we effectively spread the pulses further apart per turbo thus increasing the amplitude of the pulses. Therefore, when the turbo is spooling up to speed, rather than receiving a constant push, it will get a series of vigorous shoves that help it accelerate faster thus reducing lag significantly.
....
"In V-type & flat cylinder layouts it is easy to visualise how superior exhaust flow will be into twin turbos.
"Also with exhaust flow divided, each turbo will run a touch cooler, which ultimately improves their service life."

All of the above also means better smoother power curves, means more everyday usable power bands that induce whiplash with just a twiddle of your toes.

Hope that answers your question,
Osanda.

great stuff.. now are they going to be sequential or like the B4 with one starting off then the other kicking in later..

just re read your post... one for each bank so sequential...

[smythie]

the B4 was sequential (turbos operating in sequence). Looks like you are mistaking sequential for a parallel/concurrent setup

[vaccine]

lol.. a project similiar to mine.
i am going a big single east/west over gearbox.
run will be a gt3040 on stock motor, then maybe a gt35R or gt40R.
friend just made 200@4000rpm, and 300@6000rpm.
running 13psi through a gt40R on built H6 motor in a Gen2 lib.
hes about to screw 20psi in.. thinking around the 400kw mark.

[DeMobBoss]

the B4 was sequential (turbos operating in sequence). Looks like you are mistaking sequential for a parallel/concurrent setup

Yes I believe parallel/concurrent is a more accurate description with individual exhaust flow from one bank of cylinders. I also forgot to mention the inertia component in more detail - two smaller turbos have less inertia than a single big turbo in Paul's experience, which is also a widely documented phenomenon with figures to boot; in a typical scenario the moment of inertia for a large turbo can be 2.5 times greater than for two small turbos. Also two turbos are easier to fit given the space constraints in that engine bay compared to one large turbo.

preliminary dyno testing this morning running at only half LPT boost has revealed astonishingly high flat line torque curves from very low rpms - so no lag. Final results should be mind blowing! We're still waiting for the boost controller.