Stealth RB's

[Forced_downunder]

Anyone heard news about the new Stealth RB's?

Saw this post this morning:
http://www.n54tech.com/forums/showthread.php?t=34684

I'm waiting for a set of Pures, will be interested in what the RB's are about and estimated specs.

[dane083]

Is there a dealer for Pure Turbos in Australia?

[JD75]

Originally Posted by dane083

Is there a dealer for Pure Turbos in Australia?

Yes, that would be me.

I have three sets of Stage 2's on the way, one of which Greg is desperate to get his grubby little hands on before his next 1K runway event.

[JD75]

Originally Posted by Forced_downunder

Anyone heard news about the new Stealth RB's?

Saw this post this morning:
http://www.n54tech.com/forums/showthread.php?t=34684

I'm waiting for a set of Pures, will be interested in what the RB's are about and estimated specs.

Without having asked Rob about Stealth RB specs, I suspect they use a 19T compressor wheel courtesy of a re-sleeved comp cover inlet and a very large TD04HL exhaust turbine, up from the TD04L wheel found in standard RB's.

[flinchy]

i'm assuming they're RB's answer to VTT 2+

.. yeah looks to be exactly the same, but no option for 20t on top of 19t?

"These are Super RB "Stealths". They are called Stealths because they are Super RB's that look stock from the outside. This goes well for fitment for the RHD guys, 5 series guys, or really anyone looking for a max effort setup without changing anything around in the engine bay and retaining OEM appearance. For those looking for the large compressor housing setup, that is when the Super RB "EVO's" will come into play. Will also say that //Mposter is correct, these are TD04HL 9-Blade 19T Billet turbos- so very well matched wheel combinations yet very difficult to shoehorn into these housings."

wonder what pricing will be like... reliability too.

[dh58]

Didn't VTT speak about having bigger blades in the stock frame not being a good thing?

[JD75]

Originally Posted by flinchy

i'm assuming they're RB's answer to VTT 2+

.. yeah looks to be exactly the same, but no option for 20t on top of 19t?

"These are Super RB "Stealths". They are called Stealths because they are Super RB's that look stock from the outside. This goes well for fitment for the RHD guys, 5 series guys, or really anyone looking for a max effort setup without changing anything around in the engine bay and retaining OEM appearance. For those looking for the large compressor housing setup, that is when the Super RB "EVO's" will come into play. Will also say that //Mposter is correct, these are TD04HL 9-Blade 19T Billet turbos- so very well matched wheel combinations yet very difficult to shoehorn into these housings."

wonder what pricing will be like... reliability too.

Haha, it looks like my guess based on pics only at that stage was right on the money.

But the VTT Stage 2+ turbos do not use a TD04HL inducer diameter wheel spec, IIRC they use a Garrett 9 blade wheel profile in TD04L inducer size.

[JD75]

Originally Posted by dh58

Didn't VTT speak about having bigger blades in the stock frame not being a good thing?

They were/are of the opinion of having such a large exhaust wheel (TD04HL) in the confines of the stock exhaust housing would be of no real benefit.

The 9 blade turbines are a very good thing as they allow for increased exhaust gas flow at greater RPM's. The reduction in turbine housing back-pressure at high rpm/boost pressures equates to more power due to improved scavenging of the exhaust gases.

[froop]

Interesting...

[dh58]

Ah makes sense JD75

Either way after Advan's revelations.. I'm not sure we'll see much of these down here any more?

[JD75]

Originally Posted by dh58

Ah makes sense JD75

Either way after Advan's revelations.. I'm not sure we'll see much of these down here any more?

Hmmm, given that Rob will have a trade-in program for regular RB's allowing them to upgraded to "Stealth" spec I suspect there will be quite a few customers that will take up that offer.

For what it's worth standard wheel-set RB's have always made big power, no one can argue with that as the 3 highest rwkW N54's in Sydney all run RB turbos. It's their reliability that is in question, in particular the non-VSR balanced turbos that were more miss than hit if you know what I mean.

Being very very familiar with standard wheel-set RB's I for one would be very interested to see what kind of gains will be achieved with the Stealth's over the regular RB's.

[Forced_downunder]

Perhaps stealths are the answer we have all been searching for. Will be interesting indeed. The trade in is quite appealing for those who already have RB's.

[Kiwi Peter]

Well guys all i can say is i hope the new series don't smoke. I can't accept a 90% failure rate of his old units.
The new turbos will make power that's for sure, we just need reliability.

Remember these will cost $7000+ fitted we need assurances that the turbos will last beyond 5000km

RB turbos need an exchange program so a customer has a replacement turbo set to swap out if there is a failure. We need this otherwise we have a car off the road for weeks waiting on RB to repair the old units. Come on Rob sort out your S**T

In light of the RB history to date, RB should offer this service as part of the sale agreement (conditions would apply) i think this would help with future purchase confidence.

[T1M]

Smokey turbos with no warranty after 5000kms is a joke. Sure some don't smoke but if most do, that's a sure sign of a problematic design.

Thing is even if a warranty is offered, the old 'Customer had a boost leak and over-spun it' chestnut comes out again and again. Even it's obvious the failure was not from an overspeed event. Couple that with having to pay to ship them back to the US for warranty then often having it knocked back and it's a pretty poor option. Hopefully we should see another local option here soon.

[flinchy]

so pricing has been revealed as $3850 USD. Free inlets/install kit for a limited time.. so 5450AUD+shpping+taxes and you'll be probably bang on $7000 + install which is what $1000?.. plus the mandatory install of the inlets which isn't easy itself.

yeesh.

going to be another 6-12 months until hexon/VTT come out with their cast replacement upgrades too.. (which will apparently cost less and flow better)

[froop]

What I want to know is why, if you trade-in your old RBs for the Stealths are the oil drains not included (and cost $200) but if you purchase a new set of standard RBs or Stealths they come included?...

Also seems a little exxy for the trade-in price to be US$1799 + $200 for oil drains when the difference between a new standard and stealth set is $400. I get that that there are parts and labour costs to rebuild the old RBs into new ones so he can on-sell them, but that means he's charging US$1599 for that service. Not sure if that seems excessive.

[JD75]

Originally Posted by flinchy

so pricing has been revealed as $3850 USD. Free inlets/install kit for a limited time.. so 5450AUD+shpping+taxes and you'll be probably bang on $7000 + install which is what $1000?.. plus the mandatory install of the inlets which isn't easy itself.

yeesh.

going to be another 6-12 months until hexon/VTT come out with their cast replacement upgrades too.. (which will apparently cost less and flow better)

I have been speaking to Hexon and I do not believe they are still 6-12 months away from releasing their Stage 3 turbos.

They were not in a hurry to release their RR750's as it would have been far too big of a jump above their current RR550 N54 offering which could be considered a Stage 1.5 spec turbo, but in light of VTT's announcement they will speed things up a little.

The RR650's will be a Stage 2+ turbo which will be in the hands of a few select individuals soon, with the completely customised 750's to follow after that.

[flinchy]

Originally Posted by JD75

I have been speaking to Hexon and I do not believe they are still 6-12 months away from releasing their Stage 3 turbos.

They were not in a hurry to release their RR750's as it would have been far too big of a jump above their current RR550 N54 offering which could be considered a Stage 1.5 spec turbo, but in light of VTT's announcement they will speed things up a little.

The RR650's will be a Stage 2+ turbo which will be in the hands of a few select individuals soon, with the completely customised 750's to follow after that.

Last thing they mentioned was March is their estimated date to have everything finalized they hope. still, potentially 5 months is a reasonable wait.

And that they still don't know what they're going to call each option in the lineup (650/700/750 etc) yet

I thought (going by the only thread i can find on the topic) even the 650 is custom new manifold/turbine housing/compressor housing.

http://www.e90post.com/forums/showpo...1&postcount=66 - from the guy who appears to be the first tester for it?

[Brule]

I traded my old school rbs.
They worked fine with no smoke running 20psi with and without inlets.

I paid 999us for the upgrade. Plus 200 oil drains plus 200 for gaskets.
Had to sell 1.75 Inlets and buy 2 inc which was a 100 purchase after selling 1.75

Rear oil drain kept leaking after thee installs I put oem back on and no leaks after 800km.

They perform the same as old school rbs down low with extra but dyno pull after 5k rpm.

[martymil]

Have you got any logs and/or dyno graphs would love to see these, especially the logs ?

how many kms have you done on them, any problems ?

I'm just about to install my rb's back in.

[Brule]

800km

Got a few logs on datazap username Brule.
Spool is slower than rbs but I had a vacuum leak that was as wide and long as a 5c piece.
18psi 3600
It would have improved but I havnt logged or gone wot since fixing it.
None I can put on virtual dyno as I don't have gear logged.

Issues I have are map sensor not reading properly or leaky injector or vacuum leak still.

Intermitint throttle stumble on low loads around 1500 rpm.

Turbos are fine so far response feels the same as rbs.

I'm only on map rev 2 as I'm waiting for schwaben tool to turn up so I can check injector coding is correct.

[Brule]

You send back smoking ones and get stealths?

I would like to go over 550 hp range but I reckon its too risky maybe frying a piston or bending a rod etc.