Well, I can't help but brag that my vert finally has a TII motor in it after I've been saying I want to convert it for years. I've had the car for 8 years, but had to wait until I had the time/money to do it right. I spent the last few months scouring these forums for all the info I needed to make it go as smooth as possible, and it paid off. I didn't run into any problems adapting anything, so it went as planned. Also having owned a TII for a couple years in the middle, I was familar with the new setup.

Prepping the motor:
I started with a S4 jspec motor & transmission from GotJDM.com (they're somewhat local for me), which was a gamble, but it paid off. Compression tests showed 120/115 PSI front & rear, and it looked like the motor may have been rebuilt at some point. No excessive oil or any coolant in the motor, and the intake tract was extremely clean. Apex seals showed no damage at all.

I swapped the S4 turbo with a S5 and ported the wastegate to be roughly the same area as a 35mm single. I also machined the cover plate to allow the wategate door to open ~1/8" farther. I'm all for stable boost control, so this was a must. If it blows up, you won't be going fast at all anymore...

The Secondaries were swapped for Greddy 720s. The ASV was removed, since my NA EM harness had no plug for it. The Jspec LIM was swapped with a US-spec one so I could keep an EGR valve. I have to smog the car, so the ACV & air pump were used too. Other than that, everything was cleaned with a wire brush or sandblasted, then painted or polished up.

The Swap:
The NA motor and trans were pulled together, and I bolted the NA PS and bracket onto the turbo motor. The wiring is a little different, so keeping the NA made it plug 'n play. The turbo motor and trans were slid in together as well, and from there I spent a good 5 days reattaching everything and adapting.

Keeping the NA EM harness made the wiring incredibly easy. All I had to do was cut the knock sensor wire at the ECU, extend the TPS wiring, slot my injector plugs to use low imp injectors & wire in four 6 ohm resistors. Everything else was straightforward, but time consuming. I spent about 50 hours myself, but had help for a few hours pulling/dropping in the old and new motors.

First Startup:
I pressurized the fuel system by zip tying the AFM open, and found the pulsation damper leaking. I have a few extras, and the jspec rails have it on the seconary, so I swapped it without even taking the UIM off. Tested the new one, and it held just fine. Got everything ready, cranked it over and it instantly started to idle smoothly. No leaks, no real problems...hell yeah. Took it out for a few short, low throttle runs, then eventually let it get up to full boost (just 6psi for now). I almost forgot how different the turbo power band is from an NA. The car hasn't seen anything over 5k RPM yet, and is only running low boost, but it's an amazing step up. Best yet: no boost creep, so my porting did the job.

Next:
Short "break in" period just to be on the safe side, then I'll adjust the boost up to 10-12 psi. I've got the fuel/fuel control for it with a Rtek and injectors/pump, so it's just a matter of when I want to crank it up.

Above all, thanks to everyone who posted useful swap info on these forums. All the time spent with the search button let me pull this off easily.

 

Very nicely done.

 

Looking good.

 

looks like a factory convertible, shame the air box blocks all your paint work, but again it gives it that factory look and not a hack swap job.

 

Nice job. Sure looks clean. 720 secondaries? What are your future plans?

 

Thanks. I was going for a clean, stock-ish look. I know the stock airbox can be a little restrictive on turbo motors, but I'll need to make a nice box for a cone filter before I put one in. I've got a nice e-fan too, but I'm not sure I want one again.

This is my daily driver, so anything else I do to it will be with durability in mind. I'm looking to pick up a NGK wideband, just so I can have some peace of mind when I start running 10+ PSI. I might upgrade to a BNR hybrid stage 1-2 later on, but for now I'm loving the instant boost I'm getting on the HT-18. This is an RX7 afterall, there's always some other upgrade for another day .

 

nice, good job