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Turbo motor swap/ motor and tranny swap

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Old 03-08-11, 06:27 PM
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Turbo motor swap/ motor and tranny swap

I have been researching a little but cannot get the answer I'm looking for.
I have an '86 rx7 NA and I would like to go turbo. Would I be able to drop a TII motor in and then rebuild the NA tranny to handle more power or should I swap both in? Thanks
Old 03-08-11, 07:05 PM
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Umm what? Not sure what you are asking here? If you swap to a TII motor, then why would you build the N/A?

And how would you "swap both in"?
Old 03-08-11, 07:07 PM
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Most likely it'll be cheaper and easier to swap the turbo trans in, too. You'll want to consider the turbo differential, too. Search, there's a lot of info on these swaps.
Old 03-08-11, 07:08 PM
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First question: Yes
Second Question: It's up to you.
Old 03-08-11, 08:39 PM
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Just so you know, this is the list to actually do the swap

***Keep the n/a harnesses***

S4 t2 long block
tranny (i wouldnt want to use the n/a tranny)
clutch
clutch slave
starter
driveshaft or custom shaft if keeping the crappy n/a rearend
rearend
t2 hood or front mount that ****
n332 ecu
n318 boost pressure sensor
n318 AFM
turbo fuel pump
turbo throttle cable or get tricky and make the n/a cable work

Thats the gist of it. Im always forgetting somethings.
Old 03-09-11, 08:54 PM
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Thanks guys. I appreciate it , especially the parts list. It'll give me a good place to start
Old 03-09-11, 10:11 PM
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There are a number of threads in the archive. Links in the FAQ and in my sig.
Old 03-10-11, 12:52 AM
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iirc aaron found the breaking point of the NA trans, it was somewhere around 350torque? i can't find the post by aaron right now (been drinking) but i'm sure someone will correct me
Old 03-10-11, 08:12 PM
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If you plan to run the factory turbocharger then a N/A transmission of good condition will do just fine. I actually prefer to run them because of the weight difference.

Turbo II transmissions use a larger flywheel. This comes in handy because you can stick with a disk type clutch and have the holding power of a Puck type N/A clutch. This makes the clutch more forgiving for street use.

There is a difference in gearing that you may want to review as well.
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