[DarrellBuddy321]

So i am onthe verge of buying an aristo TT swap. I have a 98 na supra that has vvti. Im planning on getting a aristo engine that is not vvti. Would anyone suggest to stick to the vvti gte or get the straight gte motor. Ive search posts and there isnt much about this. If i get the non vvti gte then id have to swap gas pedal and throttle cable maybe out of a sc300. I live in CA but i figure after swapping in a gte motor it wouldnt pass smog anyways...thoughts? thanks in advance.

 

[supravan92]

wat... that sounds stupid if I understand this right.

You already have a Twin Turbo 2JZ-GTE VVTi engine, and you want to swap for pretty much exactly the same engine that's non VVTi ?


nicca you crazy.

 

[cincykid0003]

the way i read it is that he has a vvti 2jzge and wants to know if he should go vvti gte or non vvit gte

 

[Ryeno]

If you want to pass legit smog you have to swap in a USDM TT engine.

For a car with the VVT-i GE the VVT-i GTE is a better swap tho because of the massive amount of redundant parts you would have.

 

[supravan92]

I don't know I guess OP will need to clairify if he has 2JZ-GE or 2JZ-GTE already (vvti)

 

[DarrellBuddy321]

Yea I have a vvti 2jzge and planning on swapping to TT

 

[DarrellBuddy321]

The vvti motor have electronic throttle and dbw

 

[Shaky]

I have done this swap.

I went with a obd1 Aristo motor and used a U.S. tt auto tranny. Had to swap oil pans from the '98 vvti engine and drill out for oil feed.

I bought a brand new '98 tt harness and used a '95 obd1 ecu. This made the swap plug and play. I used a '95 tt rear end, driveline and axles. Used the '98 n/a fuse box, only 1 wire had to be spliced.

I'm pretty sure I could throw in a obd2 ecu from a '96-'98 and would then be able to pass smog.

I went with a single turbo during the swap. Precision 6262 billet with .58 hot side. It is perfect for auto. Made 378 rwhp at 14 psi on stock ecu and pump gas.

If you go non vvti you just need to pick up tt throttle cable, don't have to deal with gas pedal at all.

Had to do the 12v mod on fuel ecu. I used a tt fuel pump.

Only thing I haven't figured out is the cruise control. I will tackle that down the road. Will need to retro fit pre-obd2 cruise control somehow.

If I did it again I would find a vvti engine set and just get the n/a harness merged to run the turbo engine. Would probably be easier to get cruise to work but might have to go standalone, not sure on this.

If you go single this swap will be expensive, I've spent 10k easy on parts, some new some used and I did all the labor. No check engine lights and car runs great. I built it for my wife and she loves the extra 200 hp over N/A.

If you have any more questions hit me up. John

 

[Ryeno]

There is no difference swapping in a non VVT-i engine into a VVT-i vehicle versus a non VVT-i vehicle. I'm doing the opposite swapping in a VVT-i engine into a non VVT-i vehicle and the samething holds true.

 

[artbran]

There is no difference swapping in a non VVT-i engine into a VVT-i vehicle versus a non VVT-i vehicle. I'm doing the opposite swapping in a VVT-i engine into a non VVT-i vehicle and the samething holds true.

Just have to re-pin the dash connector. Thats what stopped me for a month as none of the wiring diagrams i found were in English. Then went to the UK boards and finally got what I needed

 

[Ryeno]

Just have to re-pin the dash connector. Thats what stopped me for a month as none of the wiring diagrams i found were in English. Then went to the UK boards and finally got what I needed

Ya I know but that's just basic swap stuff, like if you try swapping in an aristo engine (into a supra) you'll have to do that anyways.

 

[DarrellBuddy321]

Okay well im not too worried about the wiring or anything. My main concern was the Electronic Throttle and drive by wire any other possible thoughts others can input. Since my car was already a vvti more I wanted to see members thoughts on putting in a vvti gte or gte. The supplier im dealing with can get both and the price is the same its now a decision as to which one to get.

And im aware of most that is needed to do the swap more concered with whether to go vvti or not.

 

[Ryeno]

It's not real DBW, someone should really make a sticky on this. The regular good ol' throttle cable goes to the tb assembly at which point it gets converted to an electronic signal versus a real DBW system where there is no tb cable and the pedal gets converted to an electric signal directly.


Like I said the VVT-i engine is a better swap into a VVT-i car but you'll never be able to pass smog with it, you'll need some grade a hook-ups versus the non VVT-i engine where if it's USDM spec can poss smog as long as the technician isn't exactly keen on the visual part.

 

[DarrellBuddy321]

Can a jdm vvti engine be BAR'd with Us Spec? To pass BAR is mainly visual of emissions equipment from a 98 supra TT and the sniffer of course. Well either way i figure to grab hook up smog anyways.

Sorry for my lack of research on this question but werent there VVTi GTE's in US?

 

[Shaky]

It's not real DBW, someone should really make a sticky on this. The regular good ol' throttle cable goes to the tb assembly at which point it gets converted to an electronic signal versus a real DBW system where there is no tb cable and the pedal gets converted to an electric signal directly.


Like I said the VVT-i engine is a better swap into a VVT-i car but you'll never be able to pass smog with it, you'll need some grade a hook-ups versus the non VVT-i engine where if it's USDM spec can poss smog as long as the technician isn't exactly keen on the visual part.

Good point as JDM VVT-i or non VVT-i motors didn't have obd2 anyway, so no way to pass smog. I need to borrow a obd2 ecu and see if I can make my swap pass. I'm pretty sure it will work.

 

[Ryeno]

Nope, only the 2JZ-GE VVT-i was released in America. no 1JZs or 2JZ-GTE VVT-i.

Good point as JDM VVT-i or non VVT-i motors didn't have obd2 anyway, so no way to pass smog. I need to borrow a obd2 ecu and see if I can make my swap pass. I'm pretty sure it will work.

Nope, OBD-II TT ECU can't control VVT-i. Plus your car is CA emissions package (isn't it?) and the 98 TT is only Fed certified.


The one option is (and is300/gs300 people do) but it's a horrible option IMO is to run the TT engine off the NA ecu with a piggyback, essentially go NA-T but with a TT engine.

 

[DarrellBuddy321]

Ryeno thanks for all the info. Really appreciate it. So on a US 98 Supra TT it would be a regular 2jz-gte non vvti correct? If that's the case then id rather go for the gte with non vvti. At least then i could come closer to what the original US 98 TT would be.

 

[Ryeno]

Ryeno thanks for all the info. Really appreciate it. So on a US 98 Supra TT it would be a regular 2jz-gte non vvti correct? If that's the case then id rather go for the gte with non vvti. At least then i could come closer to what the original US 98 TT would be.

That's only because toyota was lazy and didn't bother getting the 2JZ-GTE VVT-i US tested because they knew the Supra sales weren't worth continuing in America. Same reason the 98 2JZ-GTE is only FED certified, it would pass CA testing but they didn't bother getting it approved.

In Japan the 98 would have the 2JZ-GTE VVT-i.

It doesn't really matter what you do, nothing is legal.

 

[Shaky]

Nope, only the 2JZ-GE VVT-i was released in America. no 1JZs or 2JZ-GTE VVT-i.

Nope, OBD-II TT ECU can't control VVT-i. Plus your car is CA emissions package (isn't it?) and the 98 TT is only Fed certified.


The one option is (and is300/gs300 people do) but it's a horrible option IMO is to run the TT engine off the NA ecu with a piggyback, essentially go NA-T but with a TT engine.

I'm not running a VVTi engine. Just a obd1, all they do in my area is plug into OBD2 port and if there aren't any codes you pass. Yes my '98 was a California car. What will that do to emisions. Make it harder to pass?

 

[Ryeno]

I'm not running a VVTi engine. Just a obd1, all they do in my area is plug into OBD2 port and if there aren't any codes you pass. Yes my '98 was a California car. What will that do to emisions. Make it harder to pass?

In CA they do a visual test, engine bay + cel code. If the port doesn't work it's an auto fail; You'd need to do an OBD-II ecu with an OBD-II port. They also do an actual test to measure CO, NOx, etc. If you converted to a USDM TT engine you'd pass that test. It's still be illegal tho because the law also says the engine you are swapping has to be the same model year or newer, from the same type of vehicle (car to car, truck to truck) and you can't convert a car that was originally CA spec to FED spec. All 98 TTs are FED spec because Toyota didn't bother getting them CA certified.