PinNDiv07

I have been looking around and have seen many turbo manifolds for sale. If you bought that and everything for the turbo, would there be any issues?

ColinRX7

What do you mean... Buy TII parts for your convertable? Or buy everything you need to run a turbocharger?





You can swap a TII driveline (engine, trans, driveshaft, diff, axles), harness, and ECU into your convertable and it will run just like a TII



however if you bought an aftermarket turbocharger and used the stock N/A block and intake manifolds and such, there's alot more than just bolting it up. You have to upgrade fuel injectors and get some type of fuel injection management (or at least something to step up the fuel).. Not as cut and dry as a TII driveline swap..

PinNDiv07

ok, i know of a place i could get a turbo drivetrain, and all that stuff. Would getting one of the piggy-back systems solve most of those problems, minus the jetting? I have about $2k to drop into this plan, and looking around, it seems possible...Any better ideas, im new to this

drftk1d

try to get a turbo II motor

One320B

The most common answer would be to swap in a TII powertrain, etc..there are a few people here who have done this conversion (myself included) and honestly I'm not going to tell you that it's easier. A T2 swap depends on the parts you use and whether they work. If you do a T2 swap, you usually use worn/used parts so there is no gaurantee that they work, especially things like the wiring harnesses and ECUs which are easily 10-15yrs old and have had years of heat abuse! The best way to do this swap is to get a T2 motor/tranny/driveline/axles, standalone and just roll with it. Try to avoid using stock ECUs and wiring harnesses, as they are are PIA if you get a bad one! If you decide to use a stock ECU/harness..use the same series as your car..if you have an S4 NA, use a S4 T2 ECU/Harness..this will insure that the a lot of the wiring will match up w/ your interior harness, etc. I could go on for hours on the "right" way to do a conversion; but really..just get the powertrain and go standalone, saves a ton of time and headaches.

PinNDiv07

I know what you mean. A buddy of ours has 4 RX-7s (1 turbo/2 NA) and an SCCA, that we can steal the rearend and everyting off of. So which would be better an engine transplant or just the necessary upgrades?

One320B

If you've got the parts, do the transplant... NAs have higher compression and won't take as much boost on stock internals as a t2 block...

ColinRX7

Sure they will, and they will make more power too, combined with the NA compression and extended port timing. Yes the motor takes more abuse, but it will still last a while.. But you need to tune it, the car will run a bit hotter, so you should probably upgrade your radiator.. etc.. piddly crap! Lots of people have run NA blocks with signifigant boost, the internals are fine for the most part.



But it's takes more to tune, and it's not something you want to be doing on a stock ECU.





Nothing stopping you from using a big turbo, NA block, and full EMS



But how far do you want to go... The easiest thing is to use a TII ECU and harness (OEM), and a TII longblock with OEM turbo, and swap in the driveline



After you figure everything you need to make this happen, it's going to be cheaper to do a TII driveline swap than to buy everything you need to properly run a turbocharged NA shortblock.





In the great words of Banzai, estimate your costs for your custom project, and add 50%. I know this first hand. You will spend alot of money on piddly crap that adds up. As where a TII driveline swap is pretty straightforward, and it bolts up, no real piddly crap to worry about.

One320B

I was referring to stock blocks,lol. Of course you can BUILD an NA to take the power,lol... It's just like big block 11:1 guys running 14psi and methanol ...it takes a lot more tuning..those ignition maps are crazy,lol.



I was just stating that if he is simply trying to turbo his car, just do the swap as turboing the stock NA will not be the best idea...unless he likes 6-10psi max w/out going standalone.

toplessFC3Sman

wait, so ur saying you can turbo an NA (of course with lower boost levels) and still run the stock ECU? Id think you'd need something aftermarket so u could give it more gas once the turbo spools up... plus bigger secondaries and a better fuel pump.