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

 

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"?

 

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.

 

First question: Yes
Second Question: It's up to you.

 

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.

 

Thanks guys. I appreciate it , especially the parts list. It'll give me a good place to start

 

There are a number of threads in the archive. Links in the FAQ and in my sig.

 

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

 

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.