good

me and my dealer are looking to go slowly buying and doing single turbo 13b, my idea is to rebuild the engine, if leave is not standard, or do street port, apart from that, I'm on the turbo decision and other we want to reach 360-400whp, my dealer says that gtx3076r gtx3071r or we could easily reach even something else.
I ask you if you believe that if, as I have searched all over the web and no one who rides a GT30 ... so I rather doubt if you ride it.
I want the car driving on streets and the turbo blows from 3-8krpm.
you think that you can get there??
what injectors are valid for this power series or would it change??
by the way, I forgot, we do the twin scroll turbo assembly with two external watesgates.

I hope you give me advice.

a greeting and thanks
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buenas

yo y mi distribuidor estamos mirando para ir comprando poco a poco y hacer el 13b single turbo, mi idea es hacer rebuild motor, no se si dejarlo de serie, o hacer street port, aparte de eso, estoy en decision con el turbo y demas, queremos llegar a 360-400whp, mi distribuidor dice que con gtx3071r o gtx3076r podriamos llegar sin problemas incluso a algo mas.
Yo os pregunto si creeis que si, puesto he buscado por toda la web y no hay nadie que monte un gt30... por lo que dudo bastante de si montarlo.
quiero que el coche sea conducible por calle y que el turbo sople desde 3-8krpm.
creeis que es posible llegar a ello¿?
lo inyectores de serie valen para esa potencia o habria que cambiarlos¿?
por cierto, se me olvidaba, queremos hacer el montaje del turbo twin scroll, con dos watesgates externas.

espero me deis consejo.

un saludo y gracias

 

#1 GT3076R is a crap turbo.

#2 GTX3076R is a really ******* crap turbo.

#3 Using anything but the 1.06 makes a **** turbo worse.

#4 GT3071R and GTX3071R should be OK turbos assuming you use the 1.06 A/R housing. You will need a LOT of waste gate even for the GT3071R with the 1.06. Literally half the engines exhaust will be going out the waste gate at high revs. Like that the car will be obscenely loud with an open waste gate.

You can probably do 360rwhp at typical mid boost levels with a really well flowing exhaust, and have 10.99ET power potential.

Noone uses this size and instead using a s5 rx-7 turbo with a V-trim or H-trim compressor wheel instead of the factory one. You can use either a machined out HT18S-2S compressor cover (s4 or s5) or use a 0.6A/R T04 cover.

I have some good experience with turbos around this size on my street port 12A, and I have a friend who uses a very similar thing on a stock port S5 13BT. We both love the rapid response, wide power band. We have both come to the conclusion it will be very expensive to put more power than that to the road.

Personally I would probably go for a 0.84 ball bearing t04s

 

Jeff Kiesel won this year's SCCA National AutoX championship running a GTX3076 on an FD motor. I would hesitate to label the turbo as crap

 

i second a t04s. very good flagship turbo for any strret car and relativley cheap

 

an FC 13b w/ 400 whp typical injector setup is 720 cc/min primary, 1600 cc/min secondary = 4640 cc/min total.

 

http://www.turblown.net/store/index.php?productID=65

https://www.rx7club.com/showthread.ph...ht=shy+500rwhp

Use stock primaries, and two of these for secondaries;

http://www.turblown.net/store/index.php?productID=63

 

How is he defeating back pressure? 4" exhaust with no 200cell catalytic and no mufflers that exits at the front guard?

These turbos will not go further than a legit 360whp, yet have the compressor to do 450rwhp. Do you understand what compressor to turbine size matching is?

 

His car makes about 380rwhp and he needs a small turbo with a small turbine housing so there is no lag. For autox you want instant spool, which his setup achieves.

Last time I talked to Kiesel at SCCA Pro solo event he was talking about how much faster the car was with less power and quicker spool.

 

If your going to Street port go with a bigger turbine.

I wouldn't recommend those turbos with a SP.

P trim with the .84 as mentioned is a quick spool.

To4s is a good turbo that can be had for cheap so if price is of concern skip the GT's and go with the oldie.

 

good

recomendais then not for what I get, would stay small??
esque I'd like to respond from the bottom and fast, I may have to take a gtx3570r no Do?

then for the primary standard injectors and a 1680cc in the side rail for about 400whp

I have a head check a mess, because my dealer tells me that you can reach gtx3076r 400whp, and if you do the calculation, the power that the turbo would give 2.6 of an engine piston and divide in 15% think it was I was more than 400hp outcome.

maximum pressure to be advisable to use 95 octane gasoline, with gtx3076r and gtx3570r?

greetings and thank you very much
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buenas

entonces no lo recomendais para lo que quiero conseguir, se quedaria pequeño¿?
esque a mi me gustaria que respondiera desde abajo y rapido, quizas tenga que coger un gtx3570r no¿?

entonces para los inyectores los primarios de serie y unos 1680cc en el rail secundario para unos 400whp

tengo la cabeza echa un lio, porque mi distribuidor me dice que con gtx3076r se puede llegar a 400whp, y si haces el calculo, de la potencia que daria ese turbo en un motor 2.6 de pistones y lo divides en el 15% creo que era, me daba de resultado mas de 400hp.

a que presion maxima seria recomendable utilizando gasolina 95 octanos, con gtx3076r y gtx3570r?

saludos y muchas gracias

 

I understand what you're saying, but I also understand when I see empirical evidence it is worth a second look regardless of what "the internet" is saying. This is a trap I see a lot of engineers fall into when looking at process problems.

Depending on the application, this setup will work well enough for a multiple national champion with a basically unlimited budget for a rotary engine build. Go figure

 

A friend has a gt3076r. . .0.86a/r. . .thing feels awesome, very responsive and fun. . .he's very pleased with it. . .if i wanted a street car this would be the single i'd choose. . .

 

That still wouldn't alleviate all the pre-turbine backpressure . I would bet @ 300+rwhp levels exhaust back-pressure would be well over double intake pressure past 5000rpms. Probably fall on its face after 5500rpms( HUGE drop in the torque curve).

I think the problem is most guys have worn out engines, down a coil, bad plugs, boost leaks etc on their cars that why they think so many medium frame turbos are laggy.

The last car we built with a stock port engine and a 1.15 T4 TD61 made 24psi by 3400rpms..

The GT3076 variants would probably be good for a very tight autoX track, but not as much fun on the street/highway. Personally I've never cared for cars that spooled super fast then fell on their face just where the fun starts on a rotary, but to each their own. Everyone has different tastes.

 

I have a TR3076R with a .80 A/R turbine (similar compressor map to a GTX3076R) on a large street ported engine. In any case, it does lose torque on top, but is still doing about 225 ft-lbs at 9000rpm. Peak power is around 7500rpm, and I've dyno'd anywhere from 390-420whp at 17.5 psi.

The downside to these small turbos on an FD is they are not efficient at higher rpm's. On an auto-x only car (like mine) this is fine as you spend alot of time jumping up and down the rev range and the low-mid range benefits outweigh the top end losses. On a track car I think these turbos might be a disaster as you'll be running it in that low efficiency range all the time, generating a ton of heat.

In any case, some of this was discussed not that long ago when talking about Carter Thompson's FD (though his is a stock port motor)...

https://www.rx7club.com/single-turbo-rx-7s-23/autox-fd-dyno-956766/

-Andy

 

I would never use something so small on a rotary but everyone has there own opinions.

I will tell you I've made over 600 wheel hp with a GTX3076 on a 2.0l 4 cylinder engine..

 

1.0 with a gt30 sized turbine does work well on 12A's and 13B's. My 12A setup has nearly double the exhaust pressure to intake pressure at 7400rpm. A 13B would only be worse, and this is at raw flow rates like 47lb/min. Why on earth you would hang a compressor wheel designed for 65lb/min off such a flow restricting turbine wheel/housing combo is beyond me. You get response by sizing minimalist. That is how race engineers work. If you put equipment on a race car you need to use it ALL, or else you are slower.

Got a weighbridge ticket as raced and a time slip / movie pair to show me a terminal speed I very much doubt the result achieved will pass my 'credibility test'.

 

600 wheel horsepower?

is 722bhp if FR manual
is 750+bhp if awd manual

Thats off my chart but I assume the car is trapping 150+mph on a gt30 yeah right.