Hi

I have a turbo II s5, and I was thinking put a garrett gt3582r, but I don't know what a/r chose. I want the car for street driving and street races, want small boost pressures (from 8 to 15psi max), and I want the full boost at 3500rpm but want rev at 7000/8000rpm with full boost. I hope with this setup put 350rwhp with 15psi.

Can someone help me, what a/r I should to chose? the 0.82 or 1.06?

regards

 

What manifold are you using? is it T3 or T4?

 

Why not look into a bnr turbo. Power is about right where you want it. Also street race = fail!

 

Did you just say "street races"? Grow the hell up before you kill someone.

Now assuming that was just typical tough guy talk to impress the forum people, you should avoid the .82/.84. It's just too small. It will come on like a freight train around 2500 RPM but will be out of flow by 6000. I find it to be very peaky (just dyno tuned one on Saturday). The 1.06 T3 is a great choice for that turbo

 

If you are street ported you may consider a T4 hotside. there are a gazillion choices for this turbo: http://www.atpturbo.com/Merchant2/me...egory_Code=GRT

 

Hi

I'm not crazy, and I love very much my car to destroy them. Street races or race on streets but with road close in special days, a type of track days. (in Portugal we do not have very tracks to use, we have to call police and autorities to close public roads and streets to use in special days).

I don't want a bnr, my core are broken.

I don't choose any manifold yet, can you recomend one? and prices?
With a a/r 1.06 can I have full boost (15psi) at 3500rpm? My engine have a street port.

regards

 

I wouldn't say a 0.82 A/R is too small, my T4 T04E came with a 0.84 A/R and it was perfect, had great spool, and didn't choke up top. At 350whp and 15 psi, a 0.82 wouldn't likely be too much of a restriction. Another option for great spool and for much cheaper is a T04E 57, it maxes out around 340whp, but with a good hotside can have spool almost identical to stock.

 

Cool!

 

Do you have a standalone? Or even a manifold to use with this turbo?

 

I don't chose yet a manifold. The wastegate probably a Synapse 40mm.
No standalone, I don't have anyone to tune that, I need something that can I tune alone in my garage. Probably put a Rtek 1.8 with 4 SARD 800cc and Apexi SAFC Neo.

 

A .84 T4 hotside flows more than a similar A/R T3, remember that.

http://www.a-spectuning.com/html/products/gt35r_t4.htm

a-spec makes kits for our cars. i think they are made on a per-order basis so you can email them and discuss what you want. they could make a recommendation for you. I know they do T3 1.06 kits for FD's. they also have non ball bearing kits that would be a bit cheaper i think.

But if you are only going to run an Rtek 1.8 just get a BNR turbo. I'm sure he has a core he can use and just charge you a little extra. a GT35 is not going to work with a chipped stock ECU very well... hooking the airflow meter to a 4 inch turbo inlet isn't going to work. And 4 800cc injectors isn't enough fuel. you will need 1680cc secondary injectors if you get a GT35R.

Otherwise if you want a GT35R get a standalone tow it to a tuner shop or teach yourself to tune. I taught myself how to tune Power FC using resources online, but it takes a long time. The Power FC isn't the "best" standalone by any means but it gets the job done and it has the most information available for it.

 

Yeah, I forgot that most 35R's come in T3. BNR would be a better way to go for ease of tuning on an RTek and all.

 

I know that a standalone is much better, but I don't have enought money to one. And I only want 350rwhp with in max 15psi of boost, I think that with a rtek and safc and airflow meter will work (the time for I get a standalone). I think to that de 4 800cc will work with a 45 psi of pressure (a see a dino chart from a 13bt s5 with gt35r and 4 x720 with 416rwhp)
I'm in portugal, and i can get a gt35r much cheapear that a bnr with shipping and taxes.

 

Also the turbine on a Gt35R is a lot smaller than a P trim. So even an off the shelf .82~ T4 Gt35R is smaller than your standard T4 stuff.

 

Ok, for a full rev operation and full boost from 3500rpm the best are the a/r1,06?

regards

 

BNR STAGE 4!!! how manytimes do we have to say bnr? plus, it bolts right in.

 

I know that a hybrid (BNR) is the way to go! but is very expensive with shiping to Portugal and customs taxes, I can buy in Portugal almost 2 Garrett gt35r!! My first choice was a hybrid garrett compressor H trim with stock turbine housing, but my turbine housing are completely destroyd without possibilities of reparation! and my garrett man say that is impossible with that housing!
And now I want a BB turbo with a houge evolution possiblities to be done. My choice are the gt35r, but I want first put the engine work without a standalone! Help please

regards

 

There is a big difference between a .82 T3 and a .84 T4.

It is my opinion that the .82 T3 35R is too small for a 13B. I am basing this opinion on the fact that I just tuned that exact combination last Saturday. Boost came on like a freight train at 2500 RPM and shot to 18 PSI (boost controller setting). The car made 380 RWHP but the fun was over by 6000 RPM or so. I feel the instant nature of the turbo made the powerband unpredictable and there is no reason to cork the exhaust up top. The owner of the car will be shopping for a larger housing at my recommendation later in the season.

You cannot do a full turbo upgrade without a standalone. If you do, you will most certainly blow the engine in a short time. Or you will have to tune so conservative that it's pointless.

 

Yes I know that without a standalone, I can't go beuond conservative. But The reason are that a can buy a gt35r cheaper than a BNR stage. Can you help me, conservative, if I can put the engine work with this setup? And all help needed!
In future I will go standalone (motec, haltech, PFC) don't know what the best and easier to tune (I don't have experience with that, and anyone in portugal have knowhow about wankel engine to tune one!) but know I want go with the stock ecu with rtek and SAFC, and do some miles in engine because have new rebuilt.

I have a EGT gauge, a wideband controler, and with this I want have the A/F at max 14 and EGT 800ºC max. I have all the things to monitorize the critical parameters to don't blow the new engine.
This with 4 sard 800cc, stock fuel rail modified to parallel with a FPR 1:1 to put the fuel pressure to 45psi. I have to, a supra TT fuel pump.

All the help are welcome.

regards

 

I think with the Rtek 2.1 he would have control over fuel and timing at least, which would reduce the chance of motor blowage if he doesn't max out the AFM. I would NEVER recommend an SAFC for a higher horsepower setup like that. the lack of timing control would really be dangerous.

the biggest issue is getting the airflow meter to work with a 4" turbo inlet and aftermarket manifold. I think he needs to just leave the car down and save his money up until he can do it right.

 

I'm fully aware of the differences between A/R's on T3 and T4's. I was under the assumption that he was going T4, I forgot that off-the shelf 35R's are all T3. T4 is the only way to go IMO for a rotary (unless you're doing some crazy big drag turbo in a T6)

 

I think the best way is get a standalone... What's the best? price/quality/easy tune? I have to learn tune, I don't know, but I want learn.

Another thing, a BNR4 work with the setup that i have describe? (AFM, RTEK, 4 sard 800cc, SAFC, etc)

regards