mullato boi driftin

hey i was just wondering if anyones put a turbo on there N/A.
i have 2 n/a engines one is on its way out right now (problems starting) but i have another n/a with aprox 75000km but i want to put a turbo on it with out swapping to a turbo 2 engine. so i know with piston engines you need a lower compression to run the turbo smoothly but what about rotarys? i can go pick up a turbo intercooler and piping and the turbo manifold off ebay for around 600-1000$ and im seriously considering it. also the engine im swapping in soon has the omp mod done...will this affect performance wise?
basiccally i need to know what i have to do to my engine in order to put a turbo kit on. please help me asap!!!!! shes my baby
(1991 gxl white)

Aaron Cake

iTrader: (1)

See the 2nd gen FAQ.

All the eBay stuff is junk.

JoseLuis

Most of the eBay stuff is junk. You'll be very lucky if it works for you.

The N/A engines are not good for turbo charging. Same as in piston engines; The high compression on the N/A engine means you'll only be able to boost a very low psi without damaging your engine.

There is a lot of discussion about this in many threads. Do your research.

misterstyx69

iTrader: (142)

from AARON himself...
http://www.aaroncake.net/rx-7/projecttina/

Aaron Cake

iTrader: (1)

Agreed. eBay turbo stuff is hit and miss. Sometimes the Chinachargers work quite well, other times they last minutes. However I like eBay for things like intercooler kits. As long as you get a good bar and plate cooler, you've saved a lot of money. And even though the piping is very low grade aluminum, it's hard to find such a cheap source of aluminum pipe bends.

Not so much.

mullato boi driftin

well yeah thats what i was intending on doing is godspeed intercooler,random turbo manifold,greddy t4 charger and get the other parts here and there untill i have everything i need but how would you lower the compreesion in a rotary?? and i know this is gunna sound really dumb but.....the engine in my car has problems starting..thinking its apex seal is done either way hard start is a sighn of low compression in rotarys if im correct so becuase i already have low compression would a turbo kit be better or worse if the wankel is already half dead..? anddoes anyone know where i could get the headlight conversion kit?(gunna go buy a compression gauge tomorow and see whats up.

MrGoodnight

iTrader: (1)

I think what would be best for you would be to get your car running good as is.
Drive your NA for a while and just read and research and read and read and read. Eventually you know exactly what you need/want to do to your car.

To lower your compression you will need to swap your rotors with turbo rotors from another 13b.

dwb87

iTrader: (22)

Why are you against swapping a TII engine in?

It seems like a TII swap would give you fewer headaches.

Aaron Cake

iTrader: (1)

Be careful with the "random turbo manifolds". Most of the eBay ones are crap. Additionally, none of them will fit the 6 port engine with the stock lower intake manifold.

"T4" is just a frame size and says nothing about the actual turbo you intend to use. There are T4 turbos that will barely make 300HP on the 13B, and there are T4 turbos that will make over 1000HP.

To lower the compression you would need to swap in rotors from an TII. Depending on the year, they are 8.5 or 9.0. See compression chart:

http://www.mazdatrix.com/faq/rotorwgt.htm

But lowering the compression would negate a lot of the benefit of turbocharging the 6 port block.

No.

But hard starting can be caused by MANY things. Injector failures are common.

I'd suggest you take a look at the FAQ and read all about TII swaps:


Can I swap a Turbo engine/Jspec engine/13BT/etc into my Non Turbo?
Yes, check these links:
https://www.rx7club.com/2nd-gen-archive-72/s4-na-turbo-swap-details-813825/
http://www.rotaryresurrection.com/ro...conversion.htm
http://www.rotaryresurrection.com/2n...o_s4_swap.html
http://www.rotaryresurrection.com/2n...o_s5_swap.html

How do I add a turbo to my NA 13B?
What Turbo kits can I add onto my non turbo RX-7?
There are no longer kits formally made at the time of this post, however there are companies from time to time that do make available non turbo to Turbo Kits. Because most of these companies stop building the kits, or go out of business in short time, it is impossible to keep active links for them.

Most people that turbo a non turbo make their own kits:
Using the stock TII turbo, exhaust manifold with spacer, NA intakes and NA ECU:
http://www.aaroncake.net/rx-7/naturbo.htm
https://www.rx7club.com/forum/showth...threadid=88540

Aaron Cake's "Project Tina":
http://www.aaroncake.net/rx-7/projecttina/

https://www.rx7club.com/forum/showth...threadid=88758
https://www.rx7club.com/forum/showth...hreadid=124232
http://users2.ev1.net/~ccoutts/turbo..._a_project.htm

Using the stock TII turbo, exhaust manifold, intakes, ECU:
http://forum.teamfc3s.org/showthread.php?t=37694

How to port match the TII lower intake to fit the 6 port block, allowing you to bolt on all stock TII turbo stuff to an NA engine:
http://www.aaroncake.net/rx-7/4PortLIMTo6Port.htm

Turbo-NA Forum:
http://www.aaroncake.net/forum/forum...urbocharged+NA

mullato boi driftin

the reason im against putting in a t2 is because i live in winnipeg manitoba canada.....i cant find one anywhere and the one guy that builds rotarys is wanting 5000 for the engine and tranny....not including the rest of the drivetrain...and quite frank i cant afford that haha im 17 and ive done complete engine teardowns and rebuilds with pistons...its the same crap...the rotary intrest me 1 being it was invented in my province and 2 being there is almost unlimited potential( which comes at the cost of engine life) but this brings me on to another question. if i street port my n/a will i get around 200hp without decreasing my engine life..?
btw your all a huge help!!!

JoseLuis

Turbo charging a N/A rotary engine is a lot more difficult and expensive and you must be extremely knowledgeable on proper tuning. If not you will just waste lots of time and money. Then again, you will learn a lot hands on. It can be done but from what I've read, it may not be worth the trouble.

JoseLuis

I had an 88' RX-7 GXL which I had street ported when I did a rebuild at about 170,000 miles. I gained some horsepower at high RPM and lost some at low RPM but I do not believe it was near 200hp and definitely not 200 rwhp. I had a Bonez intake, Racing Beat down pipe and silencer replacing my cats and dual Magnaflow exhausts. I never dyno'd my ride but if I had to take a guess it would have been around ~170 hp from the engine. Not at the wheels. Considering a stock S4 86-88 RX7 has roughly 146hp it was a noticeable improvement but not a whopping gain. It didn't matter though. That car was a blast to drive. I only ended up selling it when I bought an RX8 but ended regretting it soon after.

If money is an issue and you are mechanically sound do some research on how to do the rebuild yourself. There are quite a few videos you can buy which do a good job of explaining how to do it yourself. www.AtkinsRotary.com comes to mind and they also sell good rebuild kits at a semi-affordable price.

ricertrash402

do thay make a swap kit for an 84 rx7

Aaron Cake

iTrader: (1)

You can purchase a j-spec TII engine from many j-spec suppliers. There are probably some local guys, or you can order from someone like Japan2LA on this forum. Yeah, there would be some shipping but since it goes freight, it won't be as expensive as you think.

These are basically junkyard engines but if you purchase from a reputable supplier, you will have a working engine.

If you are only looking for 200HP, you don't even need the rest of the TII drivetrain. Swap the NA flywheel onto the engine and use the NA clutch and rest of the drivetrain. You'll need the TII AFM, pressure sensor and ECU. The NA emissions harness gets modified to use the TII ECU (one wire change). That's about it, and you now have 180HP at stock boost. 200HP is easy with a minor boost increase.

It is more work to turbocharge the NA engine because it's going to involve fabrication no matter how you go about it. You minimize the fab work by using the TII lower intake (and thus TII upper, and bolt on all factory turbo parts) but you will still need to deal with coolant and oil to the turbo. Plus there is the ECU issue regardless. The NA ECU won't reliably run the engine. It can be done, but you'll have more money into buying a piggyback fuel controller than you will to just buy the TII ECU.

As for street porting your NA, potentially that could cost as much as a TII engine swap, all told. You won't be anywhere near 200HP without a lot of other work, including a full standalone EMS and optimal tuning. You'll be in it for $1000 just for the standalone, and then tuning on top of that if you can't do the work yourself.

Honestly at 17 with limited funds, just drive the car as is and have fun. Learn about it, then in a few years when you have the experience and funds, tear into it as a project.

Guess who wrote most of the documentation of the process you have read?

A swap kit for what? You should probably post this in your own topic.

mullato boi driftin

okay thanks again. what about japanese tiger automotive...they sell t2 engines for a good price...has anyone ordered from there before and wouldnt i have to change the wiring considering its a jspec engine and my cars american?? also what your telling me is if i drop in the turbo2 i dont need to change the drivetrain? i have a stage 1 exedy clutch in there right now...?

JoseLuis

I know you wrote what is on your website Aaron. And I know it is possible. Heck, lots of things are possible if we are willing to work hard enough on them. But that's not always the best approach. I was just trying to offer my 2 cents. Not trying to ruffle your feathers. Too late for that I guess

RxManny

dont waste your money jus buy a swap for the series of your car its a lot better and cheaper!

Aaron Cake

iTrader: (1)

No feathers ruffled, I'm just being a smartass...