1jz-gtte - Page 2

DarkSupra2.5 · 12-22-2009, 04:31 PM

Well 87TT, to be honest, it's a lot of work to drop in the 1jz. sure you can do it on your own with the right tools and some research, but the wiring is something you don't want to screw up, and the shop you take it to needs to have some knowledge on the 1jz, since it was only made in japan the wiring diagram isn't easy to come by, so you might be out of luck on that. As for the site, I believe both of those are actually the same site for the same company (confusing huh?) but as for finding a different site to help you out, i can't think of any off the top of my head. Try a google search really, or even ebay, i'd trust that more than tiger.

And to answer you suprakidd, it's really about what you want to do with the car. 7mge, 7mgte, 3g, 1jz, 1uz, 2jz, there are a lot of motors that can go in the MKIII that all have there merrits. 7m's are drop in engines as those are the stock engines. And the 1jz has about 3-4 plugs under the dash that need to be re-wired so the engine will run, along with another 1-2 under the hood. The others i have no clue, but you have options. Granted, you can use the 1jz head and wiring, and use a 2jz block as well, making it a 3 liter with a great flowing head, (i wanna do this eventually), but like i said, your options vary.

noobsuprakidd · 12-23-2009, 06:34 AM

thanx man. lets say for example if i wanna do the 1jz swap which plugs would i have to switch or whateva? i was looking at the 7mgte is it a drop in engine? no custom mounts? welding? cutting? etc? would i have to buy an intercooler for the turbo on the 7mgte? so for sooooo many questions.. thanx happy holidays..

DarkSupra2.5 · 12-23-2009, 04:11 PM

The 1jz has 3-4 plugs that branch off from the main harness and plug into the dashboard harness. Because it's a JDM made harness, the plugs don't match, so you have to change the JDM plugs to match the USDM dash harness. Also, the plug that goes to the fuse box under the hood needs to be changed as well. (This swap isn't that hard as long as you have everything you need. Just time consuming.)

The 7mgte is a drop in motor for the mkIII, with no changes to the wire harness or mounts, as this motor came with the car. just depending on which year your supra is, you'll have to use different mounts. Pre 89' years use an old style mount. 89+ year supra's use a newer mount because of a subframe change. And yes, you'll need a stock intercooler, (or aftermarket) if you use the 7mgte motor, turbo ya kno?

Of course, there may be other subtle things I dont' kno about the 7mgte that i don't know, as i haven't worked on that engine (I'm mainly a 1jz guy), so make sure to ask around and get a good idea of what you're doing before you start.

12-22-2009, 04:31 PM	#11
DarkSupra2.5 3" Exhaust Join Date: May 2008 Location: Sacramento Posts: 60	Well 87TT, to be honest, it's a lot of work to drop in the 1jz. sure you can do it on your own with the right tools and some research, but the wiring is something you don't want to screw up, and the shop you take it to needs to have some knowledge on the 1jz, since it was only made in japan the wiring diagram isn't easy to come by, so you might be out of luck on that. As for the site, I believe both of those are actually the same site for the same company (confusing huh?) but as for finding a different site to help you out, i can't think of any off the top of my head. Try a google search really, or even ebay, i'd trust that more than tiger. And to answer you suprakidd, it's really about what you want to do with the car. 7mge, 7mgte, 3g, 1jz, 1uz, 2jz, there are a lot of motors that can go in the MKIII that all have there merrits. 7m's are drop in engines as those are the stock engines. And the 1jz has about 3-4 plugs under the dash that need to be re-wired so the engine will run, along with another 1-2 under the hood. The others i have no clue, but you have options. Granted, you can use the 1jz head and wiring, and use a 2jz block as well, making it a 3 liter with a great flowing head, (i wanna do this eventually), but like i said, your options vary. __________________ 1jz-gte swap (Currently spun #3 rod bearings), Apexi high flow filter, Greddy thrust 3" downpipe, N1 3" catback with cat delete tube, 1 peice driveshaft, Bar and Plate intercooler, and 440 JDM 2jz injectors. Possible 2jz lower block swap in the works if I can't rebuild the 1j. So troublesome.

12-23-2009, 04:11 PM	#13
DarkSupra2.5 3" Exhaust Join Date: May 2008 Location: Sacramento Posts: 60	The 1jz has 3-4 plugs that branch off from the main harness and plug into the dashboard harness. Because it's a JDM made harness, the plugs don't match, so you have to change the JDM plugs to match the USDM dash harness. Also, the plug that goes to the fuse box under the hood needs to be changed as well. (This swap isn't that hard as long as you have everything you need. Just time consuming.) The 7mgte is a drop in motor for the mkIII, with no changes to the wire harness or mounts, as this motor came with the car. just depending on which year your supra is, you'll have to use different mounts. Pre 89' years use an old style mount. 89+ year supra's use a newer mount because of a subframe change. And yes, you'll need a stock intercooler, (or aftermarket) if you use the 7mgte motor, turbo ya kno? Of course, there may be other subtle things I dont' kno about the 7mgte that i don't know, as i haven't worked on that engine (I'm mainly a 1jz guy), so make sure to ask around and get a good idea of what you're doing before you start. __________________ 1jz-gte swap (Currently spun #3 rod bearings), Apexi high flow filter, Greddy thrust 3" downpipe, N1 3" catback with cat delete tube, 1 peice driveshaft, Bar and Plate intercooler, and 440 JDM 2jz injectors. Possible 2jz lower block swap in the works if I can't rebuild the 1j. So troublesome.

12-23-2009, 06:34 AM	#12
noobsuprakidd Stock Join Date: Dec 2009 Location: allentown,pa Posts: 4	thanx man. lets say for example if i wanna do the 1jz swap which plugs would i have to switch or whateva? i was looking at the 7mgte is it a drop in engine? no custom mounts? welding? cutting? etc? would i have to buy an intercooler for the turbo on the 7mgte? so for sooooo many questions.. thanx happy holidays..