1jz gte engine swap advice.

[thomo8568]

Hi

I've got the chance to get a full soarer at a good price. So I've been thinking of doing an engine swap. Has anyone got any advice on doing this? Or got any links to a good how too?

The basic swap over of the engine shouldn't be to bad, from what I can see. But can't find a good write up on the wiring.

I'm also unsure Which gear box to use? Both cars are auto. Just unsure if one is better than the other, or which would work out to be the essayist.

 

Thanks for any help given.

Ian

[Andy-No-Knee]

As you are getting the whole car just move the entire engine loom over and the ecu. As far as I know the Supra box can hold more power but what are your plans? If you are just going down the stock or BPU route then the Soarer box will be fine will a oil cooler. If you want single and mega power than the Soarer can do it but will need a bit of work. The Supra one will manage it. BUT the Soarer ecu will not work the Supra box and vica versa.

[thomo8568]

As you are getting the whole car just move the entire engine loom over and the ecu. As far as I know the Supra box can hold more power but what are your plans? If you are just going down the stock or BPU route then the Soarer box will be fine will a oil cooler. If you want single and mega power than the Soarer can do it but will need a bit of work. The Supra one will manage it. BUT the Soarer ecu will not work the Supra box and vica versa.

 

Just planning on stock power, with maybe BPU in future. But no plans for anything more than that.

Is there much wiring inside to get all ancillaries working? Ie speedo, rev counter, temp gauge.

[Andy-No-Knee]

No idea, I did it the other way, a 2JZ lump into a Soarer. I changed the sensors on the lump to 1JZ ones and just plugged it in.

[garethr]

The awkward part will be wiring the Soarer ECU to work with the Supra loom, and possibly the prop shaft. A few people have done the conversion, so neither wiring nor prop shaft should be much of a problem.

 

Assuming you're swapping the 1JZ into an N/A, either 'box would probably be OK for strength, although I suppose the Soarer 'box might be stronger (not sure if anyone knows for sure). If you want to use a Supra TT box (which is definitely stronger) you'll have to make a hybrid using the Soarer (or NA) valve body.

[Guest Roger NE]

I've recently fitted a 2JZ-GE into my Mk3 Supra . . . and found there were NO complete write-ups that gave all the info I needed, both mechanically and more especially, the wiring !

 

So I spent MONTHS sussing it all out myself before going ahead. Regarding the wiring, you really have to go through the circuit diagrams of BOTH cars, and make up your own wiring schedule, of what needs to attach to what.

 

I don't know the Soarer, but I would imagine that it uses the techniques used by the Mk3 Supra (rather than the Mk4), which also had the 1JZ-GTE fitted in later JDM Cars . . .

 

So that includes using a simple relay & resistor control system for the Fuel Pump, rather than the more sophisticated PWM electronic ECU control system used in the Mk4.

 

Again, I don't know if it's the same in the Soarer, but the Mk3 uses a SEPARATE ECU for controlling the Auto Transmission, so I can't see how you could use the Mk4 Autobox (although that would be preferable, and would bolt straight on I believe)

 

Another issue could be the Speedo Drive from the Autobox, as the Mk3 uses a mechanical cable, not electronic . . . plus the ABS has ONE sensor for the rear wheels, from the gearbox output shaft - again I would imagine that's the same on the Soarer.

 

Also, as the turbo engine uses Coilpacks, you would have to modify your Rev Counter to be the right impedance (ie change resistors inside)

 

SOME 1JZ-GTEs also uses a horrendous hydraulic fan system . . . but I believe you can just fit a 2JZ Water Pump and use the normal belt-driven viscous fan.

 

As I say, I don't know the Soarer, but these are certainly issues you need to find out about ! Hope that helps a bit.

Edited April 27, 2014 by Roger NE (see edit history)

[mclarenross]

Hi mate.

I've done this with my mkiv supra, the easy bit is the swapping over of the engine and auto gearbox, I would recommend sticking with te 1jz box, unless you going to go for big power, I'm running single turbo and I'm just going to stick a big gearbox cooler on it which should be good for 450hp, check out soarer world if you have any questions, also good thing being a soarer if you blow the box, you can pick up a spare for around £70 so nothing much to worry about. The only difficult part is the wiring, there are a few decent guides do here, specifically from Konrad on here, I used the guides http://wilbo666.pbworks.com/w/page/47216384/1JZ-GTE%20JZZ30%20Soarer

and the one for the 2jzge to wire up and bits I was confused with ...

Your best off getting all the soldering wires lined up before you start I.e the orange 2jz plug pin 15 to the 1jz white plug pin 13 etc etc. for everything and then double check that each wire connects to the other wiring loom. It is a bit of work, but if I can do it then anyone can.

The speedo issue Roger mentioned above is a small issue, but only requires two wires soldered together behind the speedo (10 min job) let me know when you get to this point and I'll send you a photo.

Thats really then only issue everything else works fine from the mkiv supra.

Good luck if you go down this route, get in touch if you have any issues and I'll help where I can.

[Swampy442]

SOME 1JZ-GTEs also uses a horrendous hydraulic fan system . . . but I believe you can just fit a 2JZ Water Pump and use the normal belt-driven viscous fan.

 

The Chasers use the excellent and rather clever hydraulic fan, a Soarer 1J has the same water pump/viscous fan as the 2J

[thomo8568]

Thanks for all the help everyone. Been to look at the car today,and everything looks good. So I just need to get it transported back home and I can start on the conversion.

 

Hi mate.

I've done this with my mkiv supra, the easy bit is the swapping over of the engine and auto gearbox, I would recommend sticking with te 1jz box, unless you going to go for big power, I'm running single turbo and I'm just going to stick a big gearbox cooler on it which should be good for 450hp, check out soarer world if you have any questions, also good thing being a soarer if you blow the box, you can pick up a spare for around £70 so nothing much to worry about. The only difficult part is the wiring, there are a few decent guides do here, specifically from Konrad on here, I used the guides http://wilbo666.pbworks.com/w/page/47216384/1JZ-GTE%20JZZ30%20Soarer

and the one for the 2jzge to wire up and bits I was confused with ...

Your best off getting all the soldering wires lined up before you start I.e the orange 2jz plug pin 15 to the 1jz white plug pin 13 etc etc. for everything and then double check that each wire connects to the other wiring loom. It is a bit of work, but if I can do it then anyone can.

The speedo issue Roger mentioned above is a small issue, but only requires two wires soldered together behind the speedo (10 min job) let me know when you get to this point and I'll send you a photo.

Thats really then only issue everything else works fine from the mkiv supra.

Good luck if you go down this route, get in touch if you have any issues and I'll help where I can.

 

How much of a difference did the conversion make to your insurance? I'm waiting to hear back about mine.

[mclarenross]

Thanks for all the help everyone. Been to look at the car today,and everything looks good. So I just need to get it transported back home and I can start on the conversion.

 

 

 

How much of a difference did the conversion make to your insurance? I'm waiting to hear back about mine.

 

its hard to say, it all depends on your NCB, age and where you live, alarm etc. ,plus I only insure mine for 1000 miles.