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What goes into turboing my rx7?

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Old May 13, 2017 | 12:20 AM
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What goes into turboing my rx7?

I have a completely stock 86 2nd gen rx7 with a 13b in it with 100psi in rotor 1 and 110psi in rotor 2. I happen to have a 7.3l banks turbo from an after market kit and 2 twin small turbos I swiped off a twin turbo v6 Mitsubishi gt300?? Along with aftermarket innercooler and gauges and everything I need to turbo it. I like how much power the stock motor has but it's not enough lol. I'm wondering what I would have to do to turbo it or if I even can? Can it take the power with stock seals? Let me know I would greatly appreciate it.

. -thanks

Last edited by Oneils garage; May 13, 2017 at 12:21 AM. Reason: Grammer error
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Old May 13, 2017 | 12:32 AM
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your stock N/A engine is roughly 150 Hp.

If you plan on Putting a Turbo platform into it,save your money and buy a Turbo Car..it's the easiest and cheapest way to go Turbo.
Now if you want to "make it a little more difficult" then pitch all that other stuff you "want to put on it" and get a TII engine.It's a better platform to work with.
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Old May 13, 2017 | 12:56 AM
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Originally Posted by misterstyx69
your stock N/A engine is roughly 150 Hp.

If you plan on Putting a Turbo platform into it,save your money and buy a Turbo Car..it's the easiest and cheapest way to go Turbo.
Now if you want to "make it a little more difficult" then pitch all that other stuff you "want to put on it" and get a TII engine.It's a better platform to work with.

​​​​​​honestly have all the parts laying around. Everything from turbo to boost controller. I'm a fabricator so its not doing it that's the problem I just dont wanna blow up my motor as soon as I do the firest start up.


Last edited by misterstyx69; Jun 27, 2017 at 12:04 AM.
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Old May 13, 2017 | 01:39 AM
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Nice pics..but before anyone starts "Gauging interest" I have to STOP it and ASK that IF anyone wants to inquire about your car then please do so BY PRIVATE MESSAGE!

The reason I say "TII Engine" is that is a bit more simple to do than Toss parts on an engine that needs MORE parts to make it run.
Sure you can grab a Turbo..but then you need a manifold,wastegate,intercooler system..exhaust.. need injectors..ECU.......Kaching!..MONEY..!
With the TII engine you can pretty well toss it in,adjust the N/A wiring and fab a pipe to the exhaust.Add the TII ECU and a couple other TII components that all fit the car and you are drivin down the road.

By the way,Your Post count allows you to Post in SEC GEN SPECIFIC..so in the future please let the NEW members use this Specific section.
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Old May 13, 2017 | 06:30 AM
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And the TII drivetrain is capable of handling the additional hp and torque...unless you can fab a transmission or LSD differential.
And this smells a bit like a FS ad to me as well.

I like how people say things like "drop in (insert engine here)"...makes it all sound so simple until it ends up a parts car.
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Old May 13, 2017 | 07:42 AM
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Everyone always wants to do this the hard way, and it usually ends up in a hodgepodge or a project car being sold in 1000 pieces.

Selling the car and starting with a TII platform, from every perspective is the most sensible. I'm sorry this isn't the answer you were looking for, but it's the answer you're going to get from anyone who's been around the block long enough to see this brought up.
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Old May 13, 2017 | 07:55 AM
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6 port engines don't handle boost well, your best bet is getting a TII engine. Every NA/turbo build Ive seen has never lived long, if you think you can do it I hope it works out for ya, but I would advise against it.
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Old Jun 11, 2017 | 02:56 AM
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I've been told that the turbo engines use different rotors and housings than the non-turbo engines. And that if one was to turbo a non-turbo engine, don't expect it to work right or last very long. good luck.
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Old Jun 11, 2017 | 08:20 AM
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If you are a fabricator, and down for a project, then you can turbocharge the NA engine. Total BS about the 6 port "not taking boost well" and "not living long".

First things first though. Find the specs for your diesel turbo and your Mitsubishi turbos. I suspect you will find the Mitsubishi turbos way too small but the diesel turbo might be suitable or could be made suitable with a turbine housing swap.
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Old Jun 11, 2017 | 10:15 AM
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Originally Posted by Oneils garage
I'm wondering what I would have to do to turbo it or if I even can? Can it take the power with stock seals? Let me know I would greatly appreciate it.
The stock seals are fine if they are in good shape. The only reason to upgrade them is for a high-rpm racing application, and this does not apply to your situation.

The main problem you have is the NA drivetrain, which is good for about 200-230hp in drag racing or road racing. Since it is actually based on torque rather than hp, the drivetrain will handle more power if you drive the car like a grandma, but then there isn't much point in producing more power if you can't use it. Anyway, if you plan on running more than 8psi boost you should really upgrade to the stronger Turbo II drivetrain (including clutch slave cylinder), and when you combine this with all the time and money spent on the turbocharger, manifold, exhaust system, larger fuel injectors, upgraded fuel pump, ECU upgrade, boost gauge, tuning, etc., then you are WAY better off just selling your car and buying a Turbo II.

Originally Posted by Aaron Cake
Total BS about the 6 port "not taking boost well" and "not living long".
This is true if the user attempts to run the engine at high boost levels, or if the fuel and timing are not set very well due to a ghetto EFI setup or bad tuning. I remember a lot of people blowing up turbocharged NA engines back in the 1980s because they did not have the advanced aftermarket fuel and ignition controls that are available today.
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Old Jun 26, 2017 | 11:28 PM
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I'll tell you right now, I got impatient because I didn't have a TII platform nearby and went in to convert an NA S5 to an S5 TII and it has been a long list of parts ever since. Even if you can fab some mounts and get an engine into an NA car, you'll need to upgrade all the other odds and ends. (And putting a 13BT into an 13B is supposed to be easier than the route you're going.) Drivetrain, wiring, sensors, manifolds, etc.
Turbos and boost controllers are the easy parts to find. I've been working with my builder for 10 months and we're finally getting around to swapping out the back end to be able to handle the power. Its exactly as Evil Aviator said, the NA drivetrain doesn't have the hardiness of the TII components.
I'm just saying, it sounds like a lot more work than it's worth. Unless you've got the time and skills, I'd say wait for the opportunity to buy and work on a TII car to avoid the hassle.
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Old Jun 27, 2017 | 12:04 AM
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I'm doing it the hard way and I often regret it. Sell the car and buy a turbo, if you really want a turbo car. The list gets really long for a turbo conversion
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Old Jun 27, 2017 | 03:45 AM
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The OP hasn't been on the forum for a month and a half. I suspect the thread was just a poorly disguised attempt at a FS ad anyway and he's probably sold the car.
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Old Jun 29, 2017 | 05:48 AM
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Originally Posted by Oneils garage
​​​​​​honestly have all the parts laying around. Everything from turbo to boost controller. I'm a fabricator so its not doing it that's the problem I just dont wanna blow up my motor as soon as I do the firest start up.

Are those turn signals in the FTP lights? You should totally put in turns on the bottom as well!!! That is kinda clean having the whole body shaved like that. Must be a pain to work on though and expensive if damaged!
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