EFINI_RX-7_RZ

So I was originally planing to get a 60-1, GT35R or AF61R turbo targeting for about 400rwhp, but now I'm thinking that I don't want a turbo with THAT fast a response, and my mods will be able to support up to 500rwhp anyways, so why not just get a larger turbo to suit, one that will have a smoother, more linear response? So now I'm considering a 63 trim Garrett T04R with a P trim wheel and 1.00 A/R hotside or any other turbo that can fit these new targets. Mind you, I still want the fastest response turbo that can deliver this kind of power, short of a GT40R which is just too expensive. Any suggestions? Anyone who had tried cars with GT35R-like turbos and GT40R-like turbos who can attest on how these two different power levels feel like response-wise?

sleeperfc

get a masterpower t70. $550.

make 500 on a ported motor at 22psi.

there are threads about it. A few threads actually. Im running a t70 with a 1.0 a/r hot side.

signofinfinity

...me too, am going for this turbo with a 66.5mm inducer, and same a/rs...

after doing all my maths, and decided what i really wanted... i think the TO4R is the best median way. also, replacement parts are easily accessable and not toooooo expensive like the gt series. just my opinion and what i am gonna do...

EFINI_RX-7_RZ

Good suggestion, keep'em coming! . And you say it is boosting fully at 3.5k, is that at 22psi, too? Do you happen to know this turbo's compressor and turbine sizes? Coz I can't seem to find them anywhere around. I guess it flows the 70 lbs/min needed to make the 500rwhp, and it will be more than probable that it actually has a copy of a Garrett compressor wheel. Have you driven a 7 equipped with a smaller turbo, of the GT35R kind, so you can tell how they compare?

EFINI_RX-7_RZ

Specs-wise, I like the Turbonetics 62-1 compressor wheel better, what with its smaller exducer, which should promote quick spool-up, attached to a big shaft P trim turbine using a 1.00 A/R tang divided cover, but they REALLY overcharge for their turbos, and I can't find the Garrett equal to this turbo. Affordable is the way to go!

crazyrx7

I would rather run lower boost and achieve 400rwhp vs running higher boost to achieve the same power. There is a lot more to do once you run higher than 17psi on the stock map sensor. You will need a 3 bar sensor along with a new tune on your power fc.

R.K.

EFINI_RX-7_RZ

???

Sorry, didn't mean to be rude, but I will of course have the proper mods to sustain this power level. I'm planning to use a PFC plus an AVC-R boost controller, as this already comes with the MAP sensor used on the boost control accessory kit for the PFC. The AVC-R will let me control boost better than with just the PFC alone.

RacerXtreme7

iTrader: (2)

What you described is a GARRETT turbo, Turbonetics would be considered as the GARRETT equal. Turbonetics uses GARRETT parts and clones GARRETT parts for re-sale as Turbonetics. Turbontics does however have a few propietary wheel designs and their own ball bearing CHRA (not full ball bearing, but half. The thrust/front sleeve bearings are ball, not the rear which is still a sleeve) and logo'ed comp and turbine covers.

CHEAPTURBOS.COM is a GARRETT retailer and have good prices, but any GARRETT retailer should be able to get all the parts needed to assemble any turbo you can dream up provided the parts exist.

EFINI_RX-7_RZ

That's the problem, I can't find a compressor wheel part number on the Garrett High Performance catalog that fits the specs of the Turbonetics 62-1, that's why I can't find a way for my Garrett distribuitor to sell or build me one.

crazyrx7

Thats alright. All i'm saying is that I would rather have a bigger turbo and run lower boost than having a smaller turbo and boost the **** out of it to get the power you want.

R.K.

sleeperfc

thread titled: "master power t70". BDC started it.

https://www.rx7club.com/showthread.p...ter+power+t-70

has all the specs and junk. Its a 69.11mm inducer, and the turbine is a standard t4 p-trim.

-------

Thread titled: "my 481rwhp dyno".
https://www.rx7club.com/showthread.p...ter+power+t-70
This guy is makin some power with it.

-------

Thread titled "My build update..." <--- my thread.
https://www.rx7club.com/showthread.p...ter+power+t-70



thats plenty of info for now.

RacerXtreme7

iTrader: (2)

hmmm maybe the 62-1 is one of those Turbonetics exclusive wheels. I'd swear I've sold a couple before. I'll try and dig up a part number if it is available through Garrett.


~Mike...........

EFINI_RX-7_RZ

Jeez, that's a mighty large compressor wheel! You sure it reaches 22psi at 3,500 rpms? And it starts boositing at 2,000? That's a wheel that should flow at least 85 lbs/min, it's like 1 stage and a half above what I'm looking for! There should be enough compressor wheel there for like 650rwhp in there, although the hot side will be chocking at 500.

BNA_ELLIS

On my previous fd I had 424rwhp on a dyno dynamics dyno. @1.1.bar boost
Ported motor, full boost at 3,500 with a t04r .84 a/r cutback that was with afr at 10.6:1

EFINI_RX-7_RZ

Thanks, that will be very helpful. 62-1 compressor wheel specs are:

Inducer: 2.441"

Exducer: 3.000"

A part number for a complete turbo with a P trim wheel and 1.00 A/R hotside will yield an off the shelf turbo that will be cheaper than a custom made unit .

black beauty

im buying this to run on my half bridgeport

http://store.yahoo.com/cheapturbo/garrettt4to4r.html

with the Q trim

Heisenberg

iTrader: (3)

I have been planning on getting a master power turbo myself. I think the T70 is a little to big for what i am running as well so i was planning on getting the T61. I have not been able to find it for $550 like sleeperfc has talked about bu i have found it for $575 and you have to change out the hot side cover because it only comes in a t3 footprint.

Here are the wheel specs for the T70 and T61 to see the difference.

T70:
Compressor
Exducer = 2.72 / Major = 3.85
Turbine
Exducer = 2.54 / Major = 2.89

T61:
Compressor
Exducer = 2.40 / Major = 3.58
Turbine
Exducer = 2.54 / Major = 2.89

EFINI_RX-7_RZ

The jump from T61 to T70 is pretty steep. That T61 should flow like a 60-1, GT35R or AF61R. Does Master Power offer a turbo that fits in between these two?

Heisenberg

iTrader: (3)

As far as i know they dont make one that is between the T61 and T70. The t61 should flow more than the 60-1, but as far as the other two im really not that sure.

The wheel ratio on the T70 is "1.33" which I heard is really high as far as boost responce and backpressure. The T61 is decent with a "1.23". I personally would like to have a little smaller ratio to make it more streetable so somthing between really doesnt interest me. But for under $600 i think im willing to give the t61 a shot. I just wish there was sombody on here that has run this particular turbo so i can see what there results were.


I really am kinda new at turbo sizes and different turbos so please correct me on anything inncorect i have posted.

bobybeach

The mp t70 does not use 3.85"mayor like the garrett or turbonics wheel do. it uses a 3.58"mayor giving it a wheel ratio of 1.23. this would be comparible to a slightly larger trim version of the garrett t66

also there are many more compressor trims available.

mp GT37
58mm inducer, 76mm mayor

mp T-56
56mm inducer, 84mm mayor

mp T-58
58mm inducer, 84mm mayor

mp T-60
60mm inducer, 84mm mayor

mp T-61
61mm inducer, 91mm mayor

mp T-64
64mm inducer, 91mm mayor

mp T-70
69mm inducer, 91mm mayor

there are many more larger trims also in the gt45 range using 100mm wheels

also note that masterpower have there own version of the q trim which measure 67 exducer and 74 mayor, so this uses smaller mayor than turbonetics but same exducer size as turbonetics q trim.

all are available with o trim p trim or q trim turbines and t4 or t3 flanged housings ranging from .5ar-1.00ar.

Id recomend the t70 with mp q trim turbine and 1.00ar for 500hp street port applications.

EFINI_RX-7_RZ

So this T-64's compressor is basically a Garrett TA51 wheel with 2.53" inducer, 3.58" exducer and 50 trim, right? What are the housing's A/R and inlet/outlet sizes? Sounds promising, and this will be available with an anti-surge housing too, right? Price for one with a P trim, 1.00 A/R and anti-surge?

WhoDiddy6

iTrader: (9)

Turbine Housing A/R? center, divided open? wut size too?

EFINI_RX-7_RZ

On a P trim wheel, 1.00 A/R, tangential divided housing.

Bukwild

you guys need to call www.Precisionturbo.net and get the right turbo exactly the way you want with a warrantee from company that stands behind there product. A little hint ' most don't have a store on yahoo.