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View Full Version : change over TJ motor awd to ralliart motor TJ



revstar20
15-02-2012, 11:17 AM
Hi guys im new so be gentle :happy: I want to put a TJ ralliart motor ( automatic ) in my TJ AWD (automatic ) i have the complete ralliart car but its a write off. The motor and running gear is fine is this possible ? if so how would i go about this ? I will use the motor, dash , exhaust , ecu ect from the ralliart. The gearbox has me worried not sure what to do.

Red Valdez
15-02-2012, 11:26 AM
FWD exhaust piping won't fit an AWD. The piping is different to cater for the AWD system. Pretty sure AWD headers are different to FWD headers too. The only part of the exhaust you might want to change over is your rear muffler, but this'll depend on the model - there's no point changing it if you have a Sports model. If it's base spec, you'll notice a difference.

Madmagna
15-02-2012, 11:27 AM
Motor is direct bolt in with exception to the sump and some bosses on the back of the motor

Best bet if you are careful you can just remove the bosses and trim the sump on the motor and will go straight in, I have done this before

ECU may be tricky as the Ralliart has TCL where as the Magna does not however no reason the Ralliart Tune could not have the fuel and ig maps bumped over

With the transmission, you need to keep the AWD auto, the FWD is totally different

revstar20
15-02-2012, 11:41 AM
Dam i should have realised that what about the exhaust manifold ?

mcs_xi
15-02-2012, 11:46 AM
The upper manifold is the same but the Y piece is different and everything back from the cat is different as it travels under the rear suspension arms as opposed to over it.

Madmagna
15-02-2012, 12:17 PM
Mike, dont you have an AWD lower pipe and are looking for a FWD pipe, this guy has a FWD pipe and will be looking for an AWD pipe.....hint hint

mcs_xi
15-02-2012, 12:22 PM
Couple of steps ahead there Mal!

Are you sure that the HM gear is the same as the ralliart gear? I believe HM supplied Mitsu OEM for the ralliart, but am not 100% on that.

Mike

Madmagna
15-02-2012, 12:24 PM
As they say in the classics, been there done that.....a few times now

It is all the same, same jigs still used to this day at HM

WytWun
15-02-2012, 07:23 PM
The map values from the Ralliart ECU can easily be copied over the map values in your TJ AWD ECU with a notebook and OpenPort cable - see sig for more info. You don't want to copy the whole ROM, as that would be the same as swapping the ECUs.

Most of the auto trans maps in the TJ AWD ECU are the same as, or very close to, the Ralliart auto ECU.

An alternative approach is to have Matt at Hitman Tuning (in Penrith) tune the car after the engine swap is complete. He has tuned several TJ AWDs, including mine. Other tuners familiar with ECUFlash can use the ECUFlash definitions to do this too.

Life
15-02-2012, 07:33 PM
If you're around Sydney area I can help you out with remapping your ECU with the Ralliart tune (no possible compatibility issues with immobilizer, no tcl issues). Not sure if anybody else in the area has an evoscan cable... TJTime sold his.

Btw Mal I believe you bought Ben's Evoscan, so if you ever need to switch off TCL the easy way, changing the value of Periphery Bit FAA 13 to 0 will turn TCL off in the ecu, you can then unplug the tcl ecu with no errors (with bit switched off and tcl plugged in tcl/tcl off lights remain illuminated and tcl is nonfunctioning). This is how it is done on my car, and z.spenders car. If you ever need to switch it back on, set FAA13 back to 1 and plug the tcl ecu back in.

Have done extensive testing and there are no negative side effects with this method of TCL off.

revstar20
25-03-2012, 01:37 PM
Sry guys i have been real busy taking appart the ralliart, thanks for all your help and replies

revstar20
25-03-2012, 01:52 PM
Ok guys i have stripped the ralliart down to its shell, I want to put the dash, seats, climate control, engine, ect in my tj awd , Ok im not sure if i should replace the whole wiring loom or will the awd wiring loom have all plugs for all the extras that the ralliart has? can i swap over the ralliart ecu to the awd i read a few comments that they are not much different or do i have to flash the awd ecu with the ralliart ? and what to do about the egr the ralliart has 2 and the awd has 1 , also sombody said the sump needs trimming can you explain this a bit more ? i cant see the difference

mcs_xi
25-03-2012, 03:09 PM
Ok, the looms will be a problem inside, as the AWD has a couple of extra sensors down near the ECU for YAW I think. You would have to be very clever about what looms you change.

I swapped a KJ AWD front engine loom, dash loom, lower, upper and instrument so the climate control would function. Also the ralliart cluster is not an AWD one so the readings would be incorrect.

The ECU would have to be flashed possibly as the transmission control would cetainly be different due to the different drivetrain.

Mike

WytWun
25-03-2012, 05:07 PM
can i swap over the ralliart ecu to the awd i read a few comments that they are not much different or do i have to flash the awd ecu with the ralliart ?
The AWD doesn't have TCL whereas the auto Ralliart does - if you just swap the Ralliart ECU in you'll have problems unless the TCL function is disabled. You would need to update the immobiliser code or disable the immobiliser anyway.

I would suggest leaving the ECU until you have everything working with the AWD ECU, and then get the engine maps transferred over. The auto trans maps in the AWD are very close to the Ralliart auto ECU maps already.

alscall
25-03-2012, 07:38 PM
Ok guys i have stripped the ralliart down to its shell, I want to put the dash, seats, climate control, engine, ect in my tj awd , Ok im not sure if i should replace the whole wiring loom or will the awd wiring loom have all plugs for all the extras that the ralliart has? can i swap over the ralliart ecu to the awd i read a few comments that they are not much different or do i have to flash the awd ecu with the ralliart ? and what to do about the egr the ralliart has 2 and the awd has 1, also sombody said the sump needs trimming can you explain this a bit more ? i cant see the difference

What extras are you looking for from the wiring? Is your TJ the base model or the sports version?

If its the exec, you could gain fog light wiring but not much else. The lower dash lights plus the ignition light are in your car already, you just need to search for the taped back bits lof loom. I don't know if the ralliart got electric seats or C pillar lights or not but if it did, then you could swap the 2 floor looms for this.

The cluster will work fine, but it's working on the fact that there's a larger fuel tank in place, so the distance till empty will be incorrect but everything else works fine. I had a KL FWD cluster in my AWD for a while with no issues.

The sump needs to be trimmed near where the transfer case will be, likewise the few bosses that will need to be ground down - as already explained above. When you've got the 2 engines side by side, you'll see the differences.

If you really want to take full advantage of the ralliart engine in your AWD, I'd recommend getting your car tuned rather than using the ECU. If you've got the complete ECU, keys, BEM, door/ boot locks & ignition barrel from the ralliart, you'd probably be able to onsell them for not much less than what the tune will cost.

Madmagna
27-03-2012, 05:32 AM
The front loom and the dash looms can be changed no issues, the ECU loom can not be changed.

The Ralliart DOES NOT have 2 EGR valves, I am not sure what part you are looking at

revstar20
01-05-2012, 09:34 AM
Hi guys thanks for all your help i could not have done it without you , The engine went in after trimming the sump and bosses as u guys explained, I swapped the complete wiring loom and the ecu :( i know i should have listened to u guys but their are 2 of us doing this and we had a difference of opinion lol . Their is a extra grey wire on the loom for fuel pump not sure what its for ? when i turn the ignition on the reds come on but the motor wont turn over this may have something to do with the immobilizer, can i use my immobilizer computer to match up with the key ?

Dave
01-05-2012, 09:56 AM
No, its all tied in together so the ECU is matched to the BEM and immob etc. You would have been better off using your old ecu and old BEM/immob and just got it tuned