Alright, so i have a 1990 GTU with a four port TII motor swapped in about 25k ago. Its up to date on all maintenance. When they swapped the motor however, they left it naturally aspirated. I was planning on swapping a stock intercooler and a SS turbo manifold. I was wondering what turbochargers will bolt up? thanks guys

 

the stock ones.

 

The one problem is that if you want a totally bolt on solution, buy the S5 turbo, manifold, port the wastegate, and it'll bolt up to the stock intercooler and so on. The RX-7's Hitachi turbo is a propreitary design, so nothing but the correct series of manifold (S5 manifold for S5 turbo) will bolt onto it.

But for any other turbo you'll have to buy (or make) your own manifold. You then can use whichever corresponding turbo to whichever flange you have.

I hope that rambling makes sense. Good luck.

Chris

 

you are asking what turbos will bolt to the stock manifold? the stock ones...

or you could start shelling out some money and go for a full t4 upgrade

 

what about if i got the Stainless steel headers?

 

^ that is probably a T4 manifold. and don't get an SS autochrome piece of ****. new stainless manifolds are usually $1000+ . you can bolt just about any T4 as long as it has the right flange. Common turbos for these cars are the T04B, T04E, T04S etc. also the GT series turbos.

 

You've got to have a lot of support mods for a T4 though, especially if you make a lot of power. I'm not talking just ecu and fuel mods either, wheels/suspension/bushings/clutch etc.

If you're in the market for a turbo system, we make several for the FC chassis; www.turblown.net

 

Judging by your post count, you should ask less questions and read more.
The information is out there.

You should also start out by telling us how much money you're going to spend?
And, how much power you're looking to make?

Telling us you want to bolt a turbo on is just to broad of a question...


-Ted

 

i didnt say anything about throwing a turbo on, im doing some homework on the subject now. Ive done plenty of reading/ researching, just because ive only been registered a short time doesnt mean anything. I was planning on making around 180-210rwhp. Not ridiculous, but a lil more go than it has now. I had a 300zx Z32 before my rx, and i know most of the GT series bolts up to those manifolds. Thanks for the info guys, any more help is appreciated

 

so you have a TII motor that was converted to NA? What parts do you have so far?

 

yeah thats basically what it is. I dont have any turbo accesories at the moment, I am just getting into the research stage because i really want boost, but i need the car to be reliable, thats why im only shooting for ~200rwhp. thanks for the help guys, and this would be the SS manifold i was talking about http://www.rx7store.net/product_p/st...-91%20rx-7.htm. So i guess any T4 based turbocharger?

 

if it isn't broken then leave it alone.

If you want boost then buy that manifold (or check out turblown) and get another turbo. Sounds like you're going to cause more problems than solutions

 

well the thing is, the turbo i want to run is the GT28, which has a T25 flange, but every manifold i find is a T4, and the smallest T4 turbo is gonna net around 300hp, which i dont want. Maybe if i just went with a set of rebuilt stock turbos?

 

a set? you only need one. Send the turbo to BNR get the stage one and call it a day.

 

haha im so used to the twin setup on the 300zx that i can only think in terms of multiple turbochargers. So just go with the stock TII setup? what kind of numbers can i expect from a modded TII system?

 

250hp?

post pics of your setup

 

You have no idea what you're talking about.
I still stand by my initial reply about reading more and asking less questions.


-Ted

 

why do you keep saying that but you give no reason as to why im apparently retarded. i have done a good bit of reading, but like i said i have 0 real world experience for turbocharged engines.

edit: ive only started one thread, so how am i asking "so many questions"?

 

I'm a bit confused...
Didn't you say this?

haha im so used to the twin setup on the 300zx that i can only think in terms of multiple turbochargers.



That's one too many.

Taking your example of a T28 off of a Z32...
Those turbos will make...what...maybe 400hp maxed out?
So one of those turbos would make like 200hp max.
...ON A PISTON MOTOR.
Since we're on an RX-7 forum, I assume we're trying to apply turbos to a rotary engine, right?
Power produces from turbos on a rotary engine is NOT the same as a piston engine.
Generally, power output drops about 20% - 25% versus a piston engine.
So, that T28 turbo producing 200hp on a piston engine now is down to 150hp on a rotary engine.
And, just to add insult to injury, the turbine A / R is too small for a 13B.
...so that T28 now maxes out around 100hp on a 13B.
Your 13B running a single T28 makes LESS power than a 13B with NO TURBO on it.

This is what I mean by CHOKING the engine.

All of this information is in here.
You just need to go look for it and read it.


-Ted

 

you misunderstood what i said, my Z32 was an N/A, but im used to reading and talking about the twin setup they have. The Z32 does not use a T28 system, rather a T3 flange. The GT20's series are Garrets smallest turbo's. That is why i wanted to use them, anything larger and i would have to have quite a few more supporting modifications.

Edit: thanks for the piston/rotary comparison, i didnt know that.

 

if you're only shooting for 180 - 200 hp at the wheels, just get a stock turbo and manifold (either series, although the manifold and wastegate design on the S5 is better), port it, get a boost controller (and do the supporting fuel & ECU mods), and call it a day

 

Hehehe, your reading/research hasn't helped you much. What makes it even funnier is that the person who is annoying you the most in this thread is actually helping you the most, and his website will be a lot more help than anything you have read so far. Read this first, then you will be able to ask better questions:
http://fc3spro.com/TECH/FM2W/power.htm

 

You can always run a T4 turbo at low boost levels to limit power. Tial wastegates have available 3ish psi springs..

 

Typical stock turbo setups can do 220-230rwhp. a really good stock turbo setup can do over 250rwhp.

For your power goals, get a rebuilt turbo. Hell, just get a used one in decent shape off the forums. You'll probably want to upgrade before you ever wear the thing out.

A solid Turbo II will do mid 13's on stock turbo.

 

boosted rotary =