Question, I hear things about doing the Turbo II swap into an N/A. Seems pretty straight forward. My question is about swapping an Efini front clip onto an 87 N/A Auto. Would the conversion have the same characteristics of the normal T2 swap? I'm guessing that the Efini would be the best of the best of the 2nd Gen 7's. Does anybody know the characteristics on this. What i'd be getting is an Efini front clip. If all works out & all goes my way in the next few weeks, this WILL be done.

 

Well, from what I know of a J-Spec front clip, it's RHD vs. LHD. But, the major parts (engine, transmission, pedal assembly) should swap over to the LHD car. You'll still need a Turbo driveshaft, rear differential and half-shafts.

You could cut the US clip off and weld the entire J-Spec clip on, but that would be expensive and labor-intensive.

As for just swapping the RHD specific parts over, that may or may not work (things like the dash, steering column, steering rack). Other parts, such as the hood, fenders, nose, reinforcements, lights, will.

One last thing to look out for is that you'll be buying a J-spec engine that may or may not have good compression, or bad coolant seals. It may have low miles, but there's still the possibility that the core engine may need to be rebuilt.

Otherwise, an entire front clip should give you a wealth of good parts for most of the Turbo swap.

Good luck to you.

 

I still plan to drive it on the streets so it will still need to be LHD. Don't plan on driving on the wrong side of the car anytime soon, hell RX-7s are cop magnets already. No need pissing them off by having them go to the wrong side of the car, even though it'd be super funny .

So all that would be needed are the half shafts, driveshaft, & differential. I can work with that. As far as ECU & Wiring goes, what would be better to use as far as ECUs go?

I have a feeling that seeing as how this clip is coming from Japan, I may just have the motor rebuilt & streetported before it is put in. Hell, i'm willing to wait a little bit longer for more speed. Question, would this swap have any cons compared to the USDM Turbo II aside from the fact it is directly from Japan & a specialty shop would have to work on it? But, if im not wrong, the Efini is just about the same as the TII with the exceptiong of the 215hp the Efini puts out. Which i'm still curious as to how it does this.

 

I'm not sure in regard to those questions.

Basically, I think the J-spec and US-spec parts are the same. The differences in HP are due to emissions equipment used. That's part of why the 3rd RX7 was no longer exported to the states, Mazda couldn't get emissions to meet US requirements.

That's the only CON about using a J-spec: to meet emissions requirements in states such as CA or NY, you have to use US-spec manifolds and emissions equipment.

As far as which ECU is better, I don't think there's much of a difference between a US and J-spec ECU. You could run either.

Also, be sure to read up on Turbo II swaps, www.rotaryresurrection.com has a basic write-up with a parts list (just in case I'm missing something). There are a few others on the internet and at least one on this board. Be sure to do a search on J-Spec and Turbo II swap.

I should mention that I'm not the expert. Be sure to verify any facts independently.

 

Use a US-spec harness, the J-spec is designed to enter the car on the wrong side.

 

Thanks people, I live in Fl. so emissions aren't exactly a big thing here. I thought that I would have to use the USDM ECU. I use that swap write up as sort of a bible for my rx-7. So there really is no diff between the two, cool. Wonder how that RB complete exhaust will work out on that. MMMMMMMMMMMMMMMMMMM

Question, I've heard about a few different kind of port jobs(street, bridge, different staged ports), but recently i've been hearing about a pinnapple port. What exactly is this & how does it compare to the "normal" ports that are normally spoke of?

Would the street port be the most reliable port for a daily driver that is looking for 12-second e.t. slips(after the next auto) in the future?