I use to love reading the 15-20 page technical articles in SCC, then it seemed to go less technical and more "tuner" and I stopped reading. I remember reading that article and then going to look for divided turbocharger only to find that the only divided turbos were "HUGE" T4 turbochargers... Fast forward to today and thinking a T4 is "HUGE" makes me smirk a little.

Toyota took advantage of the twin entry turbo back in '90 with the Toyota MR2. Unfortunately, the MR2 suffered from poor engine management once modified and a lack of good aftermarket support so the benefits of the twin inlet turbo setup on that car really weren't recognized.

 

What A/R are the SR20DET guys running with the 3067?

What turbine wheel size fits your 1.06? I know they make 3 or 4 diffrent t3 wheels. Turbonetics used stages 3,4,5. I have a TS T4 P-trim 1.00 A/R turbine housing, with a v-band sitting in my shop...you think its rare? Think I might beable to use it if I go with one of your 35Rs?

 

So where abouts should the GT3071 make full spool (23-24psi on pump) on a IX...most likely say with GSC S1 cams? That is what interested me.

 

The SR20DET guys all run the .78 A/R. In fact a Nissan Engineer at the plant in TN just bought a .78 A/R GT35R twinscroll kit for his SR20DET to test. I told him i think the .78 is too small but he is intent on proving me wrong, we'll see

The 1.06 i have is a gt30R. i have a pretty well known drifter who runs our twinscroll 30R kit on his drift car begging me for the hsg, so i might have to let it go, well see

if you have a p trim 1.00 turbine turbo that isnt rare, and it is pretty big. If you swapped a gt37R on there you would probably net some decent results, but a 1.00 is big for a p trim. remember a p trim is an 11 bladed turbine, not 10 blade like a GT.

You would be able to use a p trim with a gt35R compressor but it doesnt make any sense, i wouldnt recommend it

this is a pretty good example of what to expect



more info here:

https://www.evolutionm.net/forums/sh...&postcount=182

 

Thanks for the insight. Im interested how the 1.06 A/R will do with the 30r TS setups......its hard to make a decision on the turbo setups . The 30R TS setups look promising...but I would like to see them against the 35r T4 TS setups

 

I used to write all of those long articles but nowdays they have more restrictive page count guidelines and articles have to have a more broad appeal. Its sorta good because now we gotta write more entertaining technical articles. Jay Chen's latest stuff is pretty good. I think my stuff is probably too boring for most people.

 

I have argued with the SR guys for years about exhaust housing size. Most SR tuners love small housings and are all backpressure bound. Then you wonder why so many of those backpressure bound drift cars blow up. SR guys love the crappy 2871 with the dinky .64 housing.

I have been trying to get the drift guys into twin scrolls and bigger A/R's for awhile. I think the Enjiku guys might finaly be trying it.

Geoff, you might want to give the T350 wheels a try. A 76 trim in a divided TO4 housing flows more than a P trim, has 4 points more turbine effiecency and has 40 percent less inertia.

A T350 is commonly known as the Turbonetics stage V, pre F-1.

 

wow...i love full-race...I used to have a mixed fullrace turbo setup on my EM1

 

I was going to buy AMS 37r kit in the future, but after reading this thread, my mind is changing.

I have a couple questions for you geoff.

I am currently running an AMS front mount with their licp and uicp.
If I was to keep my current front mount and get your TS 40r without the intercooler, would I be able to modify the licp to fit the turbo?

Also, what size injectors would you recommend for 40r setup?
I am planning to use stock ecu/TS 40r/stock block for the moment.
In the future, it will be standalone/TS 40r/built 2.3L with meth/alky no race gas.

That being said, I don't want to have to switch injectors once I put them in.
I guess I am looking for something stock ecu will be able to handle and still support enough flow when I use meth later on with ~30 pounds of boost.

 

Hello, Full-Race Geoff, I'm in love with your work
I gonna have 2.2 Cossie stroker with full build Cossie Head & other supporting mods on my Evo8, planning to do everyday drive, circuit races & perhaps some drag racing.
What would be the best twinscroll setup for me 3076 or F1-35R or bigger?
If I use turbo bigger than 35R do I strictly have to use custom engine management?

 

I dont have any first hand experience with any of Full Race's products, but the pictures and testimonials should be enough to show their quality.

Anyway, I can tell you Geoff is probly the nicest and most knowledgable person I've ever dealt with. I had contacted him maybe 7-8 months ago about a turbo kit. He had mentioned the twin scroll 40r then, and basically said everything that's been mentioned in this thread. He was always very quick to respond to e-mails, and very helpful. I feel bad having not gone through with the project after he was so helpful with everything. I sold the Evo, but if Full Race has any plans to start developing parts for the 335i, I wouldn't hesitate to buy anything from him.

A little off topic I know, but I wanted to share my experience with Geoff, and recommend Full Race to anyone who's considering a top notch turbo kit.

I'm glad to see Full Race get serious about the Evo market, and wish them luck with everything. Now get to work on some BMW 335i stuff!

 

You will want at least 1000cc's, 1600cc's if you want to be safe. Running even 1000cc's on the stock ECU is not recommended. You might as well just go ahead and install the standalone when you install the turbo and the injectors. What's another $1500 when you are already spending $7k? You might as well do it right.

 

For a 37R running pump + methanol, 1000cc should be plenty.

FYI

 

How about 4088 with e85?
I'm not good with calculating it out, but what I did calculate put it too close for comfort to the edge of the 1000cc... is that correct?

 

1200cc should suffice for that combination.