hey i have a 91 rx7 conv. i bought a turbo ll motor to put in it.
now what size turbo should i put on it T3 or T3/T4 hybred or T4
i dont know what will work the best i plan to put a front mount entercooler on and reprogram my ecu so please help me thank you for your time go rotory!!!

 

#1. Have a horsepower goal in mind.
#2. do not consider T3 turbos.
#3. Post the specs on your motor.
#4. Post supporting mods installed/planned.

 

the motor is stock i have not done any thing to it yet but i would like to have about 350 hp or so so please tell me what to do

 

I cant tell you what to do, I can only help.

Do you plan to remain on the stock ECU? Or do you plan to go with a standalone?

 

your gonna need a lot more than a TII motor

tranny/driveshaft/rearend, etc

 

How much money you got saved up for this?
If you're under $5,000, don't even bother...


-Ted

 

Ok, sorry for jacking this thread, but I'll like to get some inputs here and dont wanna waste space posting another similar thread.

#1. 300 to 400 whp; spool to 12psi by 3500rpm
#2. Not considering T3, no BB turbos too.
#3. S5 Tii motor street ported, 550cc primaries/1000cc sec. or 1000cc primaries/ 1630cc sec
#4. Haltech E6k, stock IC, RB turbo back exhaust, walbro 255 FP, EBC

Please comment on turbo options for me. Thanks!

 

^^^

 

60 -1 and 1600cc secondRIES
1000cc secondaries , using rx7.com calculator , wont give u much room to grow over the 300whp mark

 

i dont know if that will get u 12lbs by 3500 but in my neighbors fd it gets u from 0- to smiling in less than 5 seconds

 

Thanks for the input ENZO!

Other recommendations are welcome.

 

You can go the easy route and get a hybrid, or you can pick from one of several turbos that will get you there if you want to get off the stock manifold.

 

Interesting comment considering I have 720 primaries and 1600 secondaries and at 490 wheel HP, my IDCs were only 75%

 

just using that calc. 1000 sec. at 75 % duty if Rat says otherwise then all hear him
some people have lil experience and need online calc i just posted somwere else in here that i made My turbo selection off your experience with your ...zilla
- Jarrett

 

Will a hybrid like the BNR stage 2 or 3 give me the response I'm asking for? For the power they are claiming, the seem a little too good to be true.

 

well, thats pretty much your only option unless you want to come off the stock manifold. Is that an option for you?

 

Yes. I wasn't planning on using the stock manifold. However, if I can get what I'm seeking for in a hybrid turbo using the stock manifold and internal WG, then that'll be a great weight off the financial side.

 

Well, then if 300 is your goal and you want spool by 3500, a BNR would probably fit the bill. I was never able to get my stage 4 over 347 HP on a stock motor though..

 

what boost were you at? and what kind of fuel were you using?

 

Boost was about 19 PSI, and fuel was race gas, which is generally whats in my tank when I go above 17 PSI or so.

But my fuel is irrelevant.

Boost was too high for what I was getting. I think after some pondering and scratching our heads, we determined there just wasnt enough timing in the car. A problem that would have been rectified if my BNR had not lunched itself. An event that hastened my transition to a full single upgrade.

 

Where do you get these figures from.

If he has the motor in already. It can be done for less.

It depends on the option he takes.

 

^^ Well, everything depends on "options". If he can find cheap parts and does everything himself, then maybe yeah.

I started off giving myself a budget of $5000. As of now with all the parts I gathered (almost all used items), and some conservative projected cost on parts and labor, I'm approaching $10000!

But i guess it all depends on what you want and not getting carried away. Still, $5000 really isn't alot.

 

I'm looking for something that will spool to 70% - 75% by 3500 and peak to around 350whp. I'm not planning on going above 16psi.

How do you define a stock motor by the way? Is a street ported motor controlled by a stand alone still in the category of stock in your books?

 

No, thats not.

 

My plan is also 720 primaries/ 1600 secondaries with T-04 Hybrid. Good to know you're producing that kind of HP.....you must have painstakingly tuned it just right for spark and fuel. Great job!