whatsisname

Ha-ha. Hey it worked for Lamborghini when the Volkswagen Audi Group bought them out and improved Lambo quality control out of sight - from speedo needles falling off press demo cars through to Audi levels of reliability (slightly questionable atm). If the lag is horrendous, like 5500+ I'll be disappointed. Having said that, call me crazy but I actually liked the power delivery of my old set-up. The current combo just wants to turn tyres, even at 2500-3000.

Perhaps it's a combination of issues. Much like the problems Evo and some Subaru owners experienced with their FP turbos. The issues seemed isolated to specific engines.

At the end of the day if I can squeeze over 500+kW (ideally 530ish) out of a GTX3584RS using the 1.01 housing or a 1.06 machined to suit (can be done - confirmed) it will be a worthwhile increase on my current set-up that has already hit the wall. Only one way to find out using my specific combo'. The other option is to use the big 1.21 housing... but I want to see some results first before considering that path. A few 3.0L build projects running the turbo in question coming online in the new year.

Interesting side note; PT and Turbonetics have just joined forces.

Yeah I've looked at the PT stuff but reliability and significant additional oil filtration requirements don't excite me all that much.

Tried to find out the result of JMS VLT but no joy... yet.

Crazy boost levels and EGTs will do that lol

Yeah fair call.

I wonder what peak power gain I would see switching from the current FP T3 0.85 to a Garrett 1.06 463.7kW @ 25psi was all we could get using the 0.85 Saw another RB30ET make 450kW through a 2sp glide running a GTX3582 GEN I - roughly 480-490kW through a 5sp on the BW dyno

So fair to say add about 40-50kW at the wheels to a 5sp manual dyno result?

So if the T3 housing is the limiting factor, how have people managed to run over 170mph trap speeds and the horsepower required to do so using a T3 housing?

Powerglide auto? Assuming that was on E85 at 36psi.

Three more XR6T with GTW3884R results: 427kW 21-22psi on 98 423kW on 19psi also running pump 98 490kW on 24psi Unknown fuel - possibly 98. Found a 512kW on 20psi running E85 but not sure if it's a GTW3884 result or not

1.06 vs 1.01 isn't A/R for A/R [emoji6]

The improvement in maximum efficiency to 78% (vs 70% )has to factor into the result somewhere.

Comparing exhaust flow between the GT35 and RS turbines at the same housing size there is a difference in flow. Okay it's not huge, about 1.5-2lbs/min at the important PR range of 3.0-3.5 where most RB motors will operate. Of course anyone willing to sacrifice even more response can use the 1.21 housing where the increase in flow over the GT35 is closer to 4-5lbs/min. If I can get around up around 530-560kW at the wheels and peak boost by 4000-4500RPM or thereabouts I'll be more than happy with the decision. Found a dyno result for a GTW3884 on a BA XR6T. No other details other than just over 500kW @ 25psi.

Not interested in the GTX3582R GEN II, given the turbine is the same as what I've already got. How much power does the GTW3884 produce with the 67mm-84mm comp wheel?

Hopefully we won't have to wait long to see what they are actually capable of. Someone's got to give it a go and see what they are capable of in the real world. My FP GT3586R ran out of puff at 464kW @ 25psi. We tried a larger dump and made almost no difference (1.7kW peak - although decent area under the curve improvement) and was about to trial a 1.06 housing to see if the trade off in response would be worth the supposed small top end gain. Then the 84RS arrived. Additional head porting, slightly longer duration and higher lift cams and a switch to the HTZ comp wheel would no doubt help the GT3586R. But for the cost of all that I'm most of the way to getting a GTX3584RS.

We deliberately went low with all estimations. But fair call regarding the dynamic between turbine and compressor. The assumption is the RS wheel and SS housing is capable of moving the compressor to the predicted point on the map. Time will tell. Honeywell and Garrett are going to look awfully stupid their new RS turbine wheel is a huge flop given the fanfare about 2 years of aerospace engineering development.

Thanks, Lith [emoji106]? A mate and I were just running the numbers through the calculator and it seems a GTX3584RS will support roughly 950HP on a RB30DET (3000cc) at a PR of 2.7, provided it can spin to just shy of 10,000RPM. Will probably sneak 1000HP on E85, Q16 etc. He is a bit of a guru when it comes to plotting comp map response and horsepower calculations. I'm fairly confident I'll get 860+HP out of mine at 30ish psi. I'll post up the map plot once it's finished. Should achieve full boost by 4000-4500RPM. Of course it's all theoretical at this stage. Hoping to know real world numbers late Jan.

Not yet. I'm hoping to have mine up and running in Jan. I'm sure they'll be a few results out by then.

Let me know if you find out what they got out of it.

The GTX3584RS will support roughly 850-880HP on a 3.0L (maximum rpm of ~7500-8000) at a PR of about 3.1-3.3 No chance of getting 1000HP out of it, not unless it can be done at a PR of 2.75 and even then it seems unlikely considering the choke line doesn't go beyond the 90lbs/min mark anyway - maybe using E85 or race fuel blends. That said, no one thought the older Garrett stuff was capable of supporting the power level they are nowadays running on E85. I am interested in seeing what the new RS turbine wheel is capable of in term of response and top end power. So much so I'm using my 33 and RB30DET to find out [emoji6]

RS3 sedan arrives in 2017

Audi RS3 Sedan 0-100km/h in 4.1sec Add a APR tune and you've got a very quick car.