Precision Billet Turbos

[jet_r31]

lol, im keen to try a 6766, but even with the modern tech, i have a funny feeling it wont outperform/or be as good as my old gt4294 setup

have to wait for this 6870 maybe. Pity Pt wont make custom turbos a 6775 would work well...

cheers

darren

[Lithium]

Nah, that made 637awkw.

This was a normal T51 kai.

Pretty sure my hat JUST survives lol... Very very close though lol

[SCR48]

Still awaiting the retune results on my 6466 on my 25/30 motor. Hopefully some decent numbers

[Lithium]

lol, im keen to try a 6766, but even with the modern tech, i have a funny feeling it wont outperform/or be as good as my old gt4294 setup

have to wait for this 6870 maybe. Pity Pt wont make custom turbos a 6775 would work well...

Outperform/be as good as is a relative term. The cool thing about a lot of these turbos is the size difference - I almost had to eat my hat (thanks Nytsky) its pretty cool that a 64mm/66mm turbo can make the same kind of power as a 70mm/71mm hero turbo of the previous decade... there is no that that is not giong to have a really noticeable difference in the real world. Aside from "that sound" I'd much rather have that response of the 6466 and the same power as the T51R Kai, quite keen to see results from FP's take on the 6466 which has now been released - they are clearly taking aim at the Precision unit and their turbos in that size range are often quite rowdy, if they can do something to rival the 6466 in all relevant ways then that would rule

Precision already do a PT6768, and FP do a "6868" (Super 94HTA) using an aggressive (flow versus size) turbine design so there is already something on the market for that kind of target, but yeah - I think decent built RBs probably need something with more turbine than the likes of the 6766, depending on what you are looking for.

[jet_r31]

yes it is definitly a relative term Lith. yeh the 68 turbine is a q trim wheel, looks like when they updated from the 65 to the 66, it probally made it

a little redundant though maybe?.

i was thinking in auto Rb30 terms., with the extra load a bigger turbine would keep the egt in check and make the motor a whole lot happier in the tune up ,the 6766 is no

doubt always going to choke on a Rb30 in the turbine section and not the compressor side with 93lb of flow id guess.

although some of the 2j supra results are outstanding..

Can't wait for this 6870 deal..

cheers

darren

Edited May 8, 2014 by jet_r31

[NYTSKY]

Pretty sure my hat JUST survives lol... Very very close though lol

Ill get you a pic tomorrow of a T51R KAI vs a 6466 on 2 well sorted 26s. (dyno graphs with same dyno)

Night and day.

[B-rice]

Hi Dave

A long time coming but here is the difference from the T78 and the PT6262 and it drive like a different car, clutch is easy with a bit of power down low

Brown = new tune

Blue = old tune

so it takes 23psi to make 333kws thought it would be running close to 350-360kws at that boost pressure is yours twin scroll? Dave hurry and chuck the results for the RB25 on twinscroll.

[SCR48]

Still awaiting the retune results on my 6466 on my 25/30 motor. Hopefully some decent numbers

Thought I'd update this thread to for those not following my build.

Got mine tuned Friday :My 6466 went 630hp on 29psi but was lifting the head. Ended up winding it back to 451hp on 15psi for now till we can get in there and sus out the problem. Car already had ARP studs. Dyno graphs to follow

[methz]

I thought arp studs aren't good enough for those kinda boost levels, you need the next step up in studs? cant remember the name of them. 630 is good power though

[SCR48]

Here are the Dyno sheets. Printer not working so phone pic it is

[The real NISMO1]

so it takes 23psi to make 333kws thought it would be running close to 350-360kws at that boost pressure is yours twin scroll? Dave hurry and chuck the results for the RB25 on twinscroll.

Expected 350-360 as well, said the exhaust is very restrictive , having a custom done.

It was also having a fuel problem, not sure if this made any difference??

[The real NISMO1]

They said that tuning for response you loose some top end power ??

New to this so I can only take the word of a professional tuner.

If you could have driven this car before and now you would be like me, happy

[Noy]

Pete,

I'm just finishing off a carbon fibre custom catch can setup, got mines baffles and -12AN speedflow lines to help everything breath a bit better.
Saying that it's almost finished and once all assembled will be dropped off for head removal and the last few bits going in.

I'll update this thread with results as soon as it hits the rollers.

First half of the catch can setup for those interested in pics

Cheers Noy

[Mitchee]

6466 + stroker = loves it. Ignition breaking down over 29 pounds so this was the limit. I think it will do for now.

[NIS.26L]

very nice mitch!

your making more power than my ute LOL

Edited May 19, 2014 by NIS.26L

[SimonR32]

Very nice!

[The real NISMO1]

Well had the exhaust done, did not pick up much power but it helped where I wanted it, response.

since I changed the Turbo,Cams and Exhaust the car has gone from a pig to drive to being fun, enough up top and good bottom response,street drive

Here is the latest Dyno

New Dyno 345.4 KW

Red = Boost off

Blue = Low Boost

Orange = High Boost

Old T78 = 337.9KW

[Lithium]

6466 + stroker = loves it. Ignition breaking down over 29 pounds so this was the limit. I think it will do for now.

Wow, that is brutal - very nice!!

[The real NISMO1]

Pete,

I'm just finishing off a carbon fibre custom catch can setup, got mines baffles and -12AN speedflow lines to help everything breath a bit better.

Saying that it's almost finished and once all assembled will be dropped off for head removal and the last few bits going in.

I'll update this thread with results as soon as it hits the rollers.

First half of the catch can setup for those interested in pics

Cheers Noy

Hi Noy

Like to see the results when you are finished, as for me I am done with the mods, the car is driving very well for a DD and that is what I wanted . I have a 350GT Skyline (Jap Import), I put APS Twin Turbo system on it and with the extra torque it made the R34GTR seem crappy and it was a "thing" to drive BUT all good now

One thing left to do I am putting 18" Advan RS-D , machine lip/ gloss black spokes, have a look on their site and tell me what you think

Pete

[Mick_o]

Epic result Mitch must be an animal?

That on a 3.4L?

Is it in an R?