Hello friends,
I'm here in need of everyone and anyone's help.
I was looking for a turbular turbo manifold T3 or T3/T4
for the FC3S. Does anyone here have any guidance for me
on where to go and where to look. I was planning to step up
from stock turbo to a GT3076R.

I am no stranger to the 7 have been tinkering with these things
for the pass 6 years now, but mainly FD's. Have had 2 FD's, 2 N/A
FC's, but this is my first turbo II. Built this to drift but time to step up
the turbine. Have every supporting mod under the sun, just need new
turbine.

So if you guys/gals have any info. or guidance you can
help me with, I do appreciate it.

Again, thanks in advance.

Kuaika

 

You're going to want to stay away from T3 turbines on a rotary. I've been trying to make a T4 GT3076R, but haven't had success yet.

We also make turbo manifolds...

 

What's bad about t3\t4? I thought a turbo was a turbo...and only how much psi your engine can withstand being the only variable? Or is the manifold what your against?

 

Wrong, and psi alone means little to nothing without knowing what turbo is being used.

 

A-spec Tuning makes manifolds for the FC. They are a vendor on this site.

 

T3 turbos are mainly, far too small.

 

Go with 1revvin7 manifolds FTW, simply the best!

 

What type of turbo and manifold are you running, and what constitutes it being
to small? Have you read the compressor map of the GT3076R? With the correct A/R
this thing can be unstopable.

 

You think changing the footprint of the turbo to a T4 would work well or run like poo. I know it would change the air flow Dynamics, but now the stock compressor
map is off.

What are your thoughts since you seem to be more ahead of the game then me.

 

GT3076 is TOO SMALL.
Do you really know how to read a compressor map and apply it to rotary engines?


-Ted

 

Dude, stop trying to figure out what you think will work well, and look at what everybody else is running. Look in the single turbo rx7 section, and the dyno and time slip sections for FC and FD cars. Find someone running power/time levels that you want to match, look at their mods, and follow suit closely. It's that simple. People run similar turbos on rotaries for a reason...because they are proven. Anything less than a full t4 turbo setup is not really much better than stock, really.

The t04E is a good street turbo, to4r and s variations are also popular. Then you have t78 and a few t88, gt35, 40, and a few 45, and 661, t66, t70 are all good choices.

 

Dude lets get this straight, I'm not looking for 20psi. or more and I'm not looking
to do a 160+ mph run on the highway either. Don't you think I would have followed suit if that's what I was looking for???
Dude I'm trying to DRIFT so I need a low end quick spool super responsive ball bearing turbo.

If you have anything in that department I would appreciate it, all that high speed
high boost, slow spool is what my FD is for.

Thanks

 

I was trying to change the turbine wheel also. Not going to happen after looking into shaft sizes. Compressor maps have nothing to do with the turbine. T series Garrett turbos allow you to mix and match turbines/ and compressors. '

But back on track personally I would run a BB to4E 50 trim with everything else being done correctly( ie: exhaust system, turbo manifold, aux injection, engine condition, tune etc). Response is awesome and decently high power levels are doable at elevated boost levels.

 

The problem is what school do you subscribe to?

I prefer big compressors with lower boost.
For a smaller compressor to make the same amount of power, you'd need to up the boost.
Anything T3 hot side is really too small - only the GT3540R is borderline usable.
Therefore a GT3540R with a couple steps down on the turbine A/R should be perfect for your application.
In fact, talk to hIGGI, since he's using a GT3540R with the biggest 1.06 turbine A/R, but he said it was a little too laggy for drifting.
He wanted to step down (to a 0.8x turbine A/R), and he thought it would be perfect.

Running at around 10psi, it makes power in the 3xx range, which is just about perfect for drift in an FC.


-Ted

 

BUt it's clear you dont know enough about what you are talking about to tell all of us that we are wrong.

On a rotary you do not want too small a turbine housing. You can choke the engine. This causes lots of backpressure and lots of high temps which can contribute to other issues, not the least of which is a blown engine. OF course your power potential will suffer greatly as well.

You say you dont want to run high boost pressures, yet you are picking a small turbo that would require you to do just that in order to get any power out of it. And of course the higher the boost pressures, the more heat you put into the engine.

No reason you can't go to a step larger turbo and run less boost, keep intake air temps down a bit, put less stress on the turbo, keep backpressure and EGT's down on the engine, and have an overall better setup.

Oh, I had full boost spool with my t78 FD by 3700rpm. YOu dont have to run lots of boost to get power...15psi on most of the good size singles gets you 375-425rwhp all day long in a ported rotary. I have seen the t04E make 380 @ 18-20psi on a ported FD, and it is definitely responsive enough for drift (I ran the same turbo on an FD for a while).

But hey, if you know so much about what you want to try, then why are you here asking us? Go and make it happen, and then come back and let us know how that works out for you long term. A lot of stuff that plans out well on paper doesnt work that well in real life, and a lot of stuff that doesnt look "right" on paper will be the perfect setup once you get it working. I build lots of different setups for myself and customers and get to see this in action.

Oh, and I have a brand new gt35 ball bearing with a t4 undivided .81 if you are interested.

 

Hey man, mad respect for you and your builds, I feel what your saying, and don't mean to sound like I'm talking strong or talking down to you, I mean no harm and I'm not here for all that.

I am open to hear helpful constructive critisicm, and I appreciate everyone's input
here. I was more or less asking for anyone's helpful insight keeping in mind that
this is my first TII and my first shot building one of these for drift (i.e. throttle response, quick spooling) I'm still learning here, so don't beat me up.

So, quick question does anyone here have a good turbo setup for drifting???
Or can anyone direct me in that direction???

And guys/gals I really do appreciate all your feedback.

Please keep it coming.

Thanks
K