P-trim is noted below as 2.54/2.92

The F1 is : 2.69/3.11

Both the turbines use a 10 blade design and have a slight pitch increase of about 5%. Also the blades are a thicker design for higher heat dissipation, but also for higher PR's associated with Rotary's,2JZ's and such. The comp wheels are now 354 grade and are HIP'd which is a much better casting process then being used by others.

 

Ok
Thank you very much. The wheel is closer to a GT-Q wheel then.


From left to right. P, Q, GTQ.


This pic is a little misleading. From the pic it seems the inducer and exducer are the same size. The last time I saw that design it was from Innovative.

 

I think that wheel is for a driver's side mounted turbo on a twin turbo application or a Ford 7.3l diesel.

 

Don't know if this has been brought up, but the anti-surge housing will LOOSE up to 30rwhp. Just food for thought.

 

thats what i heard from some supra guys. i wonder if there is a way to delete the anti surge???

 

Hokay, i tried to confirm turbodriven's specs but the sales manager says that they haven't released that info yet. "soon"

about the lost 30rwhp is that peak hp, or is that middle of the island?

 

It's also supposed to hurt response a bit, which is why I opted against it on my 500R.

 

If going by what only a couple of supra racers found or experienced vs the rest of the world that still run it then it's also safe to say that the design that Turbonetics and Garrett/HKS with the TO4Z have adopted should help a lot with the flow reversal problem that a regular anti-surge housing seem to exibit. The only way to find out is to actually test the theory. I can also claim that a lot of other people have discoverd the opposite to what was claim by the supra people most of which are real hardcore, dedicated racers that do a lot of R&D and don't have time to post on any forums but their results speak for themselves. But then again some people based their knowledge and claims on what they read on forums and not on what they have actually done or experienced hence the term bench racers, mechanics etc.

 

I got the specs because I work at Forced Inductions and we have several hundred different turbos on the shelf, so I can be dangerous with a set of calipers....lol . If you need more info, give me a shout or shoot me a PM, we flow test all the units and have comparison flow #'s againist other manufacture turbos, but we don't post the info publicly.

 

Depends on the application and Pressure ratio the turbo is running at. Some applications you may loose 10-20hp, and some you lose none. But what you do gain is driveability since by blocking some of the re-flow slots you can get surge. The re-flow is their to just broaden the map...it doesn't add any power capability to the wheel. Its mainly for diesel apps under heavy towing.

 

so do you like the turbo potential?

compared to a gt42r?

 

if there is an advantage to all of turbonetics craziness with these turbos i'll be willing to drop the $$$ when i go single. I just want to know if a GT-K franken-turbo will match or better a gt35r w/ a ~.81 a/r.

I want 350rwhp in street trim and i want ~400hp in track trim. I want a nice curve with a long level peak. I want minimal lag and I don't want any boost drop off in the higher rev ranges.

 

They are great turbos and packaging is MUCH easier then the GT42R. As for power, the GT42 still has the edge due to the larger more efficient turbine wheel. But as long as you don't have an exhaust backpressure issue they should be VERY close.


I will PM you the turbine flow eff % info, that will let you decide.

 

The GTK will do all what you just posted, no questions about that. As for the pricing, well it all depends on what you want to spend.

 

my biggest decision factors were fitment and warranty.

garretts are bigger and warranty sucks

 

Ahh, tnetics warranty is VERY nice indeed. Can't knock that one bit....

 

Yeh.
Put a rotary in 5th gear with a big compressor wheel like a 76mm and part throttle it at very low rpms and see what happens when it starts to make boost.
Some applications drive the turbo straight into surge.

 

Yes our supra customers and lots of our diesel customers that want them blocked off suffer from this.

 

The Q-trim has been replaced by the S-trim wheel. The F1 turbine wheel is the same for the gtks as the T-series. Specs are almost identical to the Q-trim, but its the taller tip height and design that is different. I already tuned a 408 T76 with the F1 S-trim wheel 1.30 on-center housing and it made good power ( 589 @ 10psi ) but still there were backpressure issues above 5500rpm as it really needed a T6 80+mm on it. Well just have to see how it does as I hope it adresses the backpressure issues that are really the only downside to the Turbonetics turbos.

The GTKs are non-configurable at the moment. The GTK-1000s are set up as .96 tangetial, non-divided, 4-inch vbands, dry cartridges. They will sell you a 1.32 or whatever turbine housing and weld in a 4-inch v-band separately though and you would have to just get it jet-coated if you wanted.


Here are the specs:

GTK-1000 T76 Q-trim ( no longer )

Compressor:
Inducer: 2.940 3.020
Exducer: 4.030 4.030


Turbine:
Inducer: 3.110 3.111
Exducer: 2.690 2.693

 

Picts


http://webpages.charter.net/94rx7/gtk/

 

Turbine exducer is supposed to be 2.693 not 2.690.

Here is a compressor map....

 

That have always been the problem with their turbos. They don't have enough turbine wheel to match any of their big compressors.
I was hoping to see this new line with something better on the turbine section especially since they siad it was a 'S-trim' for the turbine wheel.

 

i blew my engine and they warrantied my 62-1 and i had it back in a week no questions asked i said i might have put a foreign object through it they told me to send it in and even if i didn't they would test and rebuild it but they ended up giving me a totally new turbo not even a reman

 

Ya they always do that and that is why every RX-7 owner should use Turbonetics turbos. Who cares if you are down 20-30 hp to a Garrett of the same size when you can have a no questions asked warranty unlike Garrett. Throw an apex seal through it and trash the turbine wheel...no problem new turbo and usually less than 2 weeks. I bought a T76 for a customer one time and they sent the wrong trim wheel so instead of waiting to send it back and rebuild the turbo they had one built for me that day....made it a ball-bearing unit for free and overnighted it for free. Its amazing how flexible and great to work with they are.

 

I called Steve over at Turbonetics to find out about any franken-turbo gt-ks (to get better a/rs) but apparently you can't mix and match them yet. He did say that they were planning that for the future though.