NA to TII swap?
 

Im either going to eventually rebuild my na 13b on my S5 FC or think about buying a jdm TII engine with the TII transmission to swap in. Otherwise I may go with the option of selling it as is although I want to keep it.

If I were to get a TII engine, harness, transmission, ecu, and TII cluster, what kind of things would I have to do to have the engine go in correctly? Or would it mostly be a direct bolt in kind of thing?

the S5 T2 swap is the easier of the two. the JDM engine and trans will literally drop light in. the harness that goes to the alternator will plug right in.

the JDM harness will work, although you need to repin the connector that goes to the dash, as the JDM pinout does manual and automatic, and the US has either, turbo, manual or automatic. you will also need to depin the wiper and cruise control connectors from a US harness, and put them in the JDM harness, as it doesn't have those on that harness in Japan.

OR

you can use the US harness, and you need to change the AWS and 6pi connectors for the boost solenoid and knock sensor.

you need the T2 boost sensor (N370/N374)

the EUC plugs right in, the US cluster uses the JDM speed limiter for a mileage switch, so you need to pull that pin, we've posted this before.

and that is pretty much it.

Just buy a running tii.

Thanks for the information.

I dont want my FC just sitting in the garage so I possibly will swap the engine or get a rebuild at some point.

Well it looks like RX-7s have doubled or tripled in price otherwise I would just buy a good TII. I remember seeing a lot around the $3.5k range only a few years ago.

there was one that went locally for like $1000 a couple of years ago, and today there is one for sale for $12k. obviously different cars, the expensive one is a 48k mile white S5 T2, and the cheap one is a 91 Brave Blue T2 that was badly painted red.