Ironman404

http://www.aaroncake.net/rx-7/naturbo.htm

Aaron indicates that it would be far simpler and much cheaper to just find a JDM t2 motor to swap into an N/A FC than to turbo charge the existing N/A 13b.

"It is cheaper to buy a TII or swap the TII drivetrain. It's just that simple. Buying a complete TII as a car, or even the drivetrain to swap in is significantly cheaper than turbocharging the existing NA engine. Remember that there are no kits available, so every part must be bought individually. Odds are that you are looking at least $2000 US to do a minimal install, and significantly more than that once you start adding extras. When you see that the average price for a J-spec used TII engine is between $800 and $1000, then it begins to put things into perspective. The cheapest way is to put the J-spec engine on the NA transmission. All that is required after that are a few wiring harnesses, the TII ECU, and a few other misc. things."


The feedback I have received on this forum, however, is that It is much more complicated and costly than he suggests...

Thoughts?

insightful

anything turbo is going to be more costly than you expect. but he is still correct.

and it gets more costly the more anyone hesitates, because the turbo parts are higher in demand and the Jspecs disappearing. which also brings us to the point of whether you will even find a good working Jspec turbo engine.

misterstyx69

iTrader: (142)

Lets see how much a ECU would run ya if decided to put a Turbo on a six port N/A engine,along with all the other supporting parts.
The TII diff will hook up to the N/A engine(if you built that engine to a TII Spec) but then again you need MORE parts to get that to work..or go all the way..TII driveshaft,TII Diff..TII axles...

With the "just get a TII" thing?..way easier..less money,.pay and drive..done.

Aaron Cake

iTrader: (1)

It honestly depends on a lot of factors.

For 99% of people, it is going to be a far better road to just swap in a TII engine. They are regularly under $1000 on this forum and eBay in running condition. With the ECU and other required bits it all bolts right in even to the NA drivetrain if you want (use NA flywheel).

For those people who enjoy fabrication, the process, having a project, aren't afraid of experimentation, etc. then turbocharging the NA might be they choice they make. And if they have a lot of parts lying around, it could be inexpensive.

Ironman404

lots of good info here guys. Thank you for bearing with my ignorance lol.

So what would you estimate approximate total cost of a t2 swap to be?

insightful

you're a lot more likely to run into issues trying to turbo an n/a than by starting with a complete running turbo engine.

i don't know about turboing an n/a cheaply, i've heard that one before. just piecing together what you need costs close to that thousand mark, not including the time spent trying to put it all together.

Acesanugal

iTrader: (5)

If you can find a deal like I did, turbo swapping doesn't have to be so expensive. At stock power levels, at least in my experience, you don't necessarily need the turbo drivetrain if you aren't beating the ever living hell out of the car. I've beaten on mine pretty hard and the trans and diff are still holding together just fine. For now. That being said, my engine is also ported and running NA rotors. The wiring modifications aren't bad for the NA EM harness. These days it really comes down to the work you're willing to put in, and the deal you score.

Ironman404

how much did you pay for the t2 you swapped in?

what all is required to do the swapp like you did? I would buy a good condition t2 motor today if someone has one.

Acesanugal

iTrader: (5)

The keg, the manifolds, throttle body, pressure sensor, afm, ecu, inlet duct, intercooler, bac valve, the the turbo itself, down pipe, a bov, injectors, downpipe, and throttle cable. That's pretty much it. Most everything else can be reused from your current setup.

misterstyx69

iTrader: (142)

I am confused as you posted you also want to put a V8 into it and are asking about LS Swaps..

Ironman404

I'm undecided... weighing my options.

why do you care?

clokker

iTrader: (2)

Always a good idea.


He's vying for Canadian sainthood.

Aaron Cake

iTrader: (1)

If you check the 2nd gen FAQ at the top of this forum, TII swaps are covered in detail.

As mentioned if you aren't running much over stock power levels and aren't beating the hell out of the car, the NA drivetrain can be used. Swap the NA clutch and flywheel onto the TII engine and it will bolt directly to the NA drivetrain.

Then all you need is the engine, ECU, harness, AFM, pressure sensor, fuel pump, downpipe and a few other misc things.

You can always upgrade to the TII drivetrain later if necessary.

insightful

how about just asking this instead: what is this car going to be used for?

if its going to be yet another drift missile, just go buy one of the many already converted V8 cars.

PnoyRx7

iTrader: (3)

I have a more seriously horrible question....

Does a T2 keg mate to a A/T ?

Found a good deal on just a keg (running) but no tranny and just for temporarily I wouldn't mind driving it around the city.

I have been looking for a good tranny for awhile but everyone wants almost as much as the keg for just the tranny and not to mention the 300$ pedal set from the same guy lol (yes I know I'm cheap) and I know I picked a heavy vert with an auto tranny as my 3rd and hopefully final vert, trust me driving an auto vert is not fun when the tranny decides to kick into a different gear while cruising or when it kicks me out of D and into abyss.

Ironman404

haha no drift missile...that would be cool though.

Really just a fun weekend car. I had always admired Rx7's, made an impulse buy when I came across this one lol.

PnoyRx7

iTrader: (3)

i have always admired the rx7s timeless looks and as most here would, keep buying rx7s over and over again as i feel they are so unique in the sea of SR swapped 240s and civics or stangs.

have to love the noise of a screaming rotary


funny thing is that this is the only car line that i would buy every single generation of as they are all unique and good looking in different ways.

misterstyx69

iTrader: (142)

I don't..so Good luck.

lduley

iTrader: (1)

yes, you can use a auto trans on a turbo, your just gonna need correct series counterweight and flexplate of the ENGINE, than bolt the trans on, driveshaft is dependant on what the rear end is

Murilli

iTrader: (1)

Total cost for me was almost $2k, that was swapping in a whole T2 drivetrain, upgraded parts, and all peripherals. I took about a year to accumulate all parts, which meant waiting for better prices.

jackhild59

iTrader: (7)

I got what you need, come on over here:

https://www.rx7club.com/2nd-generati...valve-1114845/

PaladiNSX

With all due respect because I greatly respect everything you do here, it's not.

The forum post detailing all of the parts needed to swap over is excellent, as is most of the text by rotaryresurrection. But if you want pictures or diagrams (the rr site only has thumbnails) you're out of luck. and god forbid you ask someone here as they'll direct you to search the forum for 10 year old posts with dead links.

ACR_RX-7

iTrader: (1)

If you want pictures or diagrams, go to foxed.ca

All of the factory service manuals are there. There is probably not a detailed 1:1 picture/swap thread because most people who undertake the swap know how to turn a wrench, or have at least experimented in the past.

insightful

and not everyone has the same standards, turbo swaps are totally straightforward since all you need is to look at pictures of turbo engines or read the turbo FSM.

when you start getting into the turbo converted n/a engines you will run across all sorts of butchery. some ok, some not so okay.

Murilli

iTrader: (1)

It's pretty straightforward, once I had all the parts it took me probably 6 hours and 2 hours the next day to tidy things up and add fluids, etc.

The big thing for me was, finding a turbo MAF that worked, for some reason a lot of these have issues. Once you have the swapped engine in, everything else is easy, and if you're missing anything you'd know pretty quick.