Ken'sGS300

iTrader: (3)

Hopefully within the next year, I will be ordering an Aristo front clip. Since I have no intention of turning this car into a manual shifted car, I will have to live with the automatic. Fine, no argument there. I wouldn't put one in anyway, not in a 2 ton 4 door "luxury - sport" car. But I would still like to get a feeling of some control over what gear I am in and when. Hence, the story the follows:

Browsing through the 2nd gen Performance forum, I saw some posts that while different, gave me an idea. E-shift on a 1st gen GS300. Please follow along with my ideas and correct or shoot them down if I am wrong.

A 2nd gen GS400 steering wheel (98-00) with airbag will fit onto a 1st gen GS300 steering column. This wheel has E-shift.

Import 93-97 Aristo front clip, driveshaft, rear diff., ECU, wiring harness, etc.

Import the tranny from a JZS161 that came out of an E-shifted car. From what I have been reading, the trannies themselves (1st & 2nd gen) are identical, just different TC's and bell housings.

With the correct bell housing, bolt up tranny to 2JZ-GTE engine.

I know that there are some electronics involved in here somewhere, anyone have any insight as to that? I have a feeling that VVT-i is going to make this impossible, since the ECU controls the tranny. A first gen ECU doesn't have VVT-i or E-shift, and while a 2nd gen ECU does, my car won't have VVT-i.


-Ken

Kaiser

iTrader: (1)

1st gen = 4speed and 2nd gen = 5 speed. If you attempt this you lose the plug and play ability with our chassis.

There are transmission control boxes out there that I 'believe' could do what you are asking. I just haven't researched it enough. The Aristo has a decent shift schedule as is with the right sized turbo(s). I'd try it as is and worry about shift schedules after it runs and you de bug it. If something is wrong with it when you start it you will have to wonder if it was something you did.

Kaiser

iTrader: (1)

http://www.powertraincontrolsolution...content-4.html

Here you go. I'd be concerned about it not retarding spark between shifts and grenading the trans.

Ken'sGS300

iTrader: (3)

Being that it is "fully programmable" shouldn't it be able to handle that? Or am I missing something?

Kaiser

iTrader: (1)

I said concerned, not convinced. It will take some work on your part to figure that out. Just wanted to point you in the right direction.

Ken'sGS300

iTrader: (3)

Got it, thanks !! ( and I was not being sarcastic, sorry if it came off that way)

Kaiser

iTrader: (1)

No, no worries. IMO you should get it running first.

Ken'sGS300

iTrader: (3)

Oh, I totally agree. Get it up and running, and then start the experimentation phase, once all the bugs are worked out.

Duds

I believe this: http://www.latentsolutions.com/suprastickuv.html would work in our cars.

twojayzee

the 161 tranny if from a 2jz motor will bolt right on to any other 1j or 2j motor. Downsides to your plan. The 161 2j trans wont hold bpu power for very long.

Ken'sGS300

iTrader: (3)

OK. But what about 161's 5 forward gears vs. the 147 ECU that is only used to seeing 4? Unless I can find a 1st gen 96-97 5sp Aristo ECU (if it even exists) Will that be a problem that only a standalone ECU or the 2 piggyback options listed above can work out? Once I get the car up and running, I can start experimenting if I am not satisfied.

twojayzee

Im sure with some injenuity you could wire up the e-shift and ecu to the tranny...the thing im not sure of is how would the 4spd auto ecu work with it. Ive seen some conflicting posts about how the auto ecu retards timing for WOT shifts, so im not sure what that would do if you had a 5spd trans controller with a 4spd auto.
An easy way to bypass all this non-sense is to do a standalone or do a vvti gte swap that has the eshift and 5spd already. Again my main concern would be the longevity of a 5spd usdm na auto tranny behind a bpu gte motor