Precision Billet Turbos

[black bnr32]

T04Z territory makes sense, but this graph still shows 30psi by about 4700rpm. So boost threshold is about the same as your 35r. But yeah, transient response similar to a T04Z makes sense.

[Lithium]

We'll, forgive me for being a sceptic, but I need to see a timeslip or data log to believe. This thing still makes 200 ftlbs more than I thought possible and spools earlier than a 35r. Crazy!

Did you see the boost level it is running? Most RB26s aren't running nearly that, and it is twin scroll which is capable of boosting torque "per psi" versus a single entry... all works well towards making a lot of torque.

In terms of spool, to be honest it did surprise me too - but it is definitely worse than GT3582Rs, particularly than twin scroll ones (keeping it apples vs apples).

More things to consider - if we were to give all these turbos names to match Precision's ones (using wheel sizes) it may put into perspective how big a PT6466 is (or isn't) considering what it can make:

GT3582R - GT6162R

GTX3582R - GT6362R

PT6466 - PT6466

T04Z - GT6765

The 66CEA turbine has by reputation less lag and more flow than the old 65mm T-series Garrett design as well, and the compressor is a light billet wheel - so really for the size they should spool at least as well as a cast wheel equivalent... ignoring aerodynamics

Fitting somewhere between a GT3582R and a T04Z really shouldn't be too surprising, which is why it's magic that it's a 600kw @ wheels capable turbo

Also worth noting that the 6466 a few pages back looks similar on Chequered Tuning's dyno:

Be interesting to overlay that and the new Hypergear "ultimate" 500kw turbo

[mattie4270]

Got my 64/66,cant wait!

[SiR_RB]

Let me know your results Mattie once it's done

Will be a very strong combo

[mattie4270]

Yes it will,chasing 600

[Lithium]

hp / kw?

[SCR48]

I'd say hp...

[ido09s]

Unigroup just tuned a 25/30 with a 6466 and it made 480rwkw at 27psi

Yes it will,chasing 600

[Lithium]

Guessing that could be Scr 48

[Frosty]

Unigroup just tuned a 25/30 with a 6466 and it made 480rwkw at 27psi

pfft put 35psi

[Frosty]

scott!! read above comment and DOOOO ITTT!!

[donut_kng]

That was my car.

Couldn't go past 27 due to needing to up the breathers on the rocker covers and mainly from frying tyres on the dyno

[Lithium]

Nice work! That is an awesome power delivery, and more in it is always a bonus :-D

SCR48 is in Perth, silly me. Be interesting to compare the results, what are the odds two 2530/6466 setups would be tuned on the same day?

[Frosty]

That was my car.

Couldn't go past 27 due to needing to up the breathers on the rocker covers and mainly from frying tyres on the dyno

ImageUploadedBySAU Community1380774170.916023.jpg

nice result man. what rpm was it letting loose on the dyno? given that likey abit more than what thats reading

pretty linear from the 4700rpm mark! almost flat lines

Edited October 3, 2013 by Frosty

[Frosty]

Nice work! That is an awesome power delivery, and more in it is always a bonus :-D

SCR48 is in Perth, silly me. Be interesting to compare the results, what are the odds two 2530/6466 setups would be tuned on the same day?

nah he is QLD hick like the rest of them

[SCR48]

QLD through and through boys. Some good results there. You guys will know my figures as soon as I do

[SCR48]

I'll be happy with similar figures to donut

[Frosty]

QLD through and through boys. Some good results there. You guys will know my figures as soon as I do

dont bother unless u get a billionty WKW!

keen to see the results. get a video of power run

[donut_kng]

My main thing was that i wanted it be strictly streetable and wasnt fussed about the dyno figure - not that its too bad at all! Therefore I went for a 6466 with .84 twin scroll - I was concerned this would be too big as I was thinking to go for a 6266 originally - although very happy with this setup which is super responsive compared to most cars I have been in, not to mention torquey-as down low due to the RB30.

It has been running for some time on 13psi run in tune which it did 308rwkw on pump 98 - then 20psi on e85 which it did 365rwkw for about 2 weeks.

Even on 20 psi the car is a wild drive on the streets - stepping out in 4th gear once is hits about 4000rpm as if it was second gear (still waiting on half decent tyres to show up).

If I upgrade the catch can (which is small as I wanted it to be hidden) they could push 34psi but doubt I will ever need to, nor bother going to the troubble as this thing has been in the making for over a year now!

[SCR48]

Do you have a build thread donut?