1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

twin turbo swap

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Old 07-11-02, 10:50 AM
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Talking twin turbo swap

i just found a guy with a 93 twin turbo engine that needs a rebuild but the turbos are good. I am thinking about putting it into my 1st gen but have a few questions first. Where can i find a computer for it and is the 12a tranny strong enough for every day driving with that engine or do i need a turbo tranny?
Old 07-11-02, 11:12 AM
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You need the turbo tranny period.

There's a reason he's throwing the turbos away - they're garbage!
Old 07-11-02, 02:18 PM
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Driven a turbo FB lately?

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Originally posted by peejay
You need the turbo tranny period.

There's a reason he's throwing the turbos away - they're garbage!
There not garbage Peejay, they are prefectly good for a door stop LOL
Old 07-11-02, 02:22 PM
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Driven a turbo FB lately?

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You will NEED A t2 tranny preferably from a series 4 (87 or 88 t2) A haltech computer can be found from Rpm centre and figure on about 3-4k extra after you buy the motor.... Remeber the twins will have to be non seq... and you wil have about 250hp
Old 07-11-02, 02:22 PM
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or some rather unique set of bookends...lol

peace
Old 07-11-02, 05:42 PM
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that's an awful lot of fabrication when much better can be done with other setups.
Old 07-11-02, 06:57 PM
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i was thinkin about just street porting one of my 12a's. But how difficult is that to do by yourself?
Old 07-11-02, 07:01 PM
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Driven a turbo FB lately?

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Originally posted by buckfutter125
i was thinkin about just street porting one of my 12a's. But how difficult is that to do by yourself?
Give it up, unless you understand everything perfectly...

I was begining to wonder on this 13b-rew deal, you have no idea what you are getting yourself into, and the path will be paved with $$$'s and a LOT of them at that!
Old 07-11-02, 07:57 PM
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i knew what i was getting into i just wanted somebody to talk me out of it because it would be tons of work and money.
Old 07-11-02, 08:49 PM
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Originally posted by buckfutter125
i knew what i was getting into i just wanted somebody to talk me out of it because it would be tons of work and money.
Ok..

Don't DO IT!, It's Tons of work and money!!


..better?
Old 12-08-02, 01:18 PM
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Re: twin turbo swap

Originally posted by buckfutter125
i just found a guy with a 93 twin turbo engine that needs a rebuild but the turbos are good. I am thinking about putting it into my 1st gen but have a few questions first. Where can i find a computer for it and is the 12a tranny strong enough for every day driving with that engine or do i need a turbo tranny?
Here's a 13BREW that is installed on an FB. The extend of the conversion is as follows:

* stock 13BREW engine and tranny
* stock 3rd gen ECU.
* Harness came from 3rd gen and was stripped of any wires/connection not needed.
* 3rd gen radiator and fans. ECU fan switch setup to run both fans.
* Custom oil cooler.
* Custom exhaust works.
* Engine mount/subframe fabrication.
* Tranny mount fabrication.
* Modified drive shalft to make it work with 3rd gen tranny and FB rearend.
* 3rd Gen gas tank.
* Misc electrical work for the car dials/gauages.

The car is quick with the twin turbo setup and sure is a sleeper.
Here's picture of the initial swap.


Last edited by rx720bt; 12-08-02 at 01:32 PM.
Old 12-10-02, 09:14 PM
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Do it so I can race you, I've only raced 1 other RX-7 in the city so far. I thought you were selling the car?
Old 12-10-02, 09:26 PM
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Hey RX720Bt, how much did you do yourself, how much was professional help, and what was the total price tag for the swap? Good lookin engine/car, and very good work
Old 12-11-02, 04:17 AM
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Whatever happened to peejay? I miss hearing his antics...lol
Old 12-11-02, 05:33 AM
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As long as you don't have traction, you don't need to upgrade your box or diff.
Old 12-11-02, 11:08 AM
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p 28- i thought the s5 tranny worked better than the s4,

something about case size and mounting points.
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