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-   -   Turbo a N/A (https://www.rx7club.com/new-member-rx-7-technical-256/turbo-n-1054356/)

ProKurt 01-02-14 08:19 PM

Turbo a N/A
 
How's it going guys? So.. I went to my mechanic, Jeff at Maztech in Tampa (in advance, he is very knowledgeable of rotary engines and is regarded as an expert in OEM rebuilds and such) and I posed a question to him which goes, "Since it is difficult to put a turbo in an N/A, can I do a TII swap?" And he told me if I wanted a turbo, to just buy a whatever year Turbo RX7. So my new question is, should I give up all hopes of putting a single turbo in my engine or should I attempt to individually put each device into my engine, with welding and whatever else I must do to my engine? I REALLY REALLY want to increase HP and torque since the car has barely any pick up, but my really wise mechanic is even waving off my suggestions.

Aaron Cake 01-05-14 10:24 AM

In most cases, it is far easier to just buy the turbo car if you want a turbo car. Swaps can be done, and are not particularly hard, but since it involves swapping nearly the entire drivetrain from a turbo car into an NA car, it basically means having a TII as a parts source. Or spending some serious time tracking down all the parts you need.

So typically, unless you are very attached to the NA car you have or have put money into it in some other area (ie. fixing up everything broken, paint, etc.) then finding a good condition TII is usually the better option.

rxmiles 01-05-14 11:16 AM

Aaron knows what he's talking about, he's added a turbo to a 13b N/A block.

It is definitely doable and very very rewarding achievement if you can successfully turbo charge a N/A block.
I had the same question, since finding a Turbo II car isn't easy. I had two N/A and a swap ready to go in.
At the end of the day I went ahead and bought a TII car in mint shape.

This has been covered relentlessly I never mean to discourage anybody in their goals, but at the end it's cheaper, easier and more reliable to just get a swap or a turbo car.

Going with a swap is no easy thing, you're looking at getting at the very least wiring, transmission, ECU (Or fuel management) then you have to address the difference in length of the drive shaft..

johnnyy07 01-25-14 12:47 AM

I'm in the process of doing mine it is very doable but I would not do a stock motor there are two ways to do it 1 you can buy a racing beatthe adapter using the stock turbo manifold and stock na intake manifold then you you have to get a phone welded on the oil pan and on the oil cooler cooler for Feed and return and such you can do it the way I'm doing it I bought turbo to intake manifold you have to port the lower intake manifold so that its 6 after that you can fit the stock turbo with no spacers then it's basic lyrics a turbo 2 but with a na block but you will need r tek 1.7 and 850 cc injectors and 550cc injectors a turbo map sensor and a turbo fuel rail and don't run more than maybe 10 lbs if you want to run more I would advise putting rotary aviation super seals on the engine and getting a program able computer then maybe 12 or 13 but the high compression does not like that much boost

Aaron Cake 01-25-14 10:49 AM


Originally Posted by johnnyy07 (Post 11666389)
I'm in the process of doing mine it is very doable but I would not do a stock motor there are two ways to do it 1 you can buy a racing beatthe adapter using the stock turbo manifold and stock na intake manifold

No, you can't. RB doesn't sell any such adapter.


then you you have to get a phone welded on the oil pan and on the oil cooler cooler for Feed and return and such you can do it the way I'm doing it I bought turbo to intake manifold you have to port the lower intake manifold so that its 6 after that you can fit the stock turbo with no spacers then it's basic lyrics a turbo 2 but with a na block but you will need r tek 1.7 and 850 cc injectors and 550cc injectors a turbo map sensor and a turbo fuel rail and don't run more than maybe 10 lbs
A phone on the oil pan?

The amount of boost which can be run will depend entirely on the turbo used, intercooling, and tune. If we are talking about the stock HT-18, then around 12 PSI is the limit on the 13B for that turbo on both the TII and NA block. Any higher and you just heat the air.

Larger more efficient turbos can run higher pressures. Or produce much more power at the same pressure.


if you want to run more I would advise putting rotary aviation super seals on the engine and getting a program able computer then maybe 12 or 13 but the high compression does not like that much boost
There are many choices for apex seal. Stock seals work fine, as do many aftermarket seals.


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