1JZ Swap MK3

[Heggy]

Hi I'm doing a IJZ swap into a '87 MK3. I just read some posts on engine mounts and now i'm a bit confused. Sorry to be a pain in the keister....

My plan is to change the subframe from the JZA70 front clip into the MK3. One engine mount was broken when I pulled the engine out of the clip. I ordered 2 new MK3 '90 GTE engine mounts. I really hope that they will fit as I'm a bit confused at the moment....

 

[slowmedown]

I believe the 89+ 7m mounts should work with the jza subframe. maybe someone can can confirm that?

 

[tlo86]

are you converting it to RHD or something?

they should work

 

[Heggy]

No the MK3 is a LHD. I read on some site that the JZA70 subframe worked. Then I read elsewhere it did not, this my confusion. If I also change the rack (I have a rebuilt one for the swap LHD) will the JZ subframe work? It ws my understanding that the rack clips should be the same.

 

[scottiedawg66]

Why not use your stock subframe? I did my swap with a clip, but i just used the stock lhd subframe, and the BIC pre 89 jz motor mounts. I think driftmotion sells jz motor mounts for both pre and post 89 cars.

The pre and post 89 lhd subframes require different motor mounts.

 

[hvyman]

Steering rack mounts are different.

Just use pre89 swap brackets and mounts.

Or get a 89+ lhd subframe.

 

[Heggy]

The reason why I would like to use the JZ subframe (and complete suspension) is that it is in very good condition and due to the lower mileage them the MK3 I could take advantage of the newer control arms, sway bars and struts (which apparently were lowered in the 90 JZ). I keep on hearin that the steering rack mounts are different (which is in contradiction to another post I read). I have never changed a steering rack myself, and I guess I can unbox the rebuilt one and see if I can spot where the differences are in comparison to the JZ clip. I bought and already have the 90 7MGTE mounts. I guess i was hoping I did not have to return them and buy the conversion mounts and the pre '89 engine mounts.

 

[Heggy]

Here's the thread from this forum saying JZ will fit on page 2 mid way http://www.supramania.com/forums/showthread.php?57411-1jz-into-an-87-supra/page2

 

[Heggy]

Just to close this, I asked Curt at Elmhurst Toyota if he could validate if the subframes are the same. And as always a quick professional response indicated that the '90 MA70 and '90 JZA70 have the same P/N front subframe 51210-14021.


Cheers!

 

[Heggy]

Boy do I feel like an idiot.... The subframes are not the same. Steering rack MOUNTS are opposite for RHD. No idea why or how the P/N can be the same from Toyota...? Guess it depends where (in the world)you are ordering from.