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Old 02-24-2010, 07:57 PM   #1
supraluver4life
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Default mk3 w/ 2jz?

so i was wonder just how much actually has to be done to swap a 7M-GTE for a 2JZ-GTE. what parts are needed and what kind of custom fabrication work would have to be done?

i was just thinking it would be an interesting combination :P

oh and what do you think stock internals on the 2jz are capable of?
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Old 02-25-2010, 02:44 AM   #2
DarkSupra2.5
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You should look around for 1jz/2jz forums, the swap's been done before, but I'll try to answer you for a bit.

Fabrication wise, you don't have to do anything if your supra is a 89+ model that uses the round style engine mounts. This is also assuming you'll use either the w58 trans, or the r154 trans with a 1jz bellhousing.

Parts wise, it can be a long list depending on how much you get with your engine. Assuming everything is on the engine, you'll need a new throttle cable (mine's from a corolla ), possible clutch line depending on what trans you originally had, electric fan kit(if you don't want to use the stock clutch fan), power steering lines (both return and pressure side), and a majorly overhauled wiring system for the ecu.

There are other odds and ends that i'm probably forgetting, but if you search around you'll be able to find interchangeable parts between the 1jz/2jz/7m engines as well as wiring suggestions and tips.

And from word of mouth, the 2jz stock internals can handle upwards of 700 rwhp, but don't quote me on that, as I don't work with that engine often. But there's enough documentation out there to prove it.

If you need stuff, you should try driftmotion.com .If you need swap parts for the 2jz, they'll have em, and upgrade/aftermarket stuff as well. Have fun.
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Possible 2jz lower block swap in the works if I can't rebuild the 1j. So troublesome.
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Old 02-25-2010, 10:09 PM   #3
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alright with an 87, you would have to change, motor mounts, harness, power steering lines, etc. but could you still use the stock tach or would that have to be modified. and do you have to change or mod the ac lines and can you use the 2j cpu?

ya one of my friends has a mk4 and he hasnt changed much and its pushing 500hp and like 520ft lbs of torque. but 700????? thats rediculous. whats the easiest way to see numbers like that out of a 2j?
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Massive DDP, 3'' custom catless exhaust, Tsudo muffler 4.5'' outlet, Apexi cold air intake, Act stage 3 clutch, ct26 turbo (stock)- 10psi
+300rwhp

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Old 02-25-2010, 10:48 PM   #4
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I can't tell you easiest ways to make that kind of power, as everyone has a different method to their madness.

Swap wise, for an 87, you'll need to either change the front k member to use round style mounts (89+ k member) or get swap mount brackets so the 2j can use the older mounts. I'm sure you'll either have to use a 7mgte tachometer, or get a 1j tach (higher red zone), but the 7m non turbo tach won't work. And from what I know, you'll have to take the head from the 7m ac compressor, and use it on the 2j compressor to use the stock ac lines. Computer wise I've heard of some guys using 7mgte wire harness on the jz engine, but I don't know how well that turns out. To do it properly you'll have to use the 2jz ecu, but it's a major wiring headache, plus I hear it doesn't work properly unless you have the fuel pump computer as well? Ask around, thesupraforums should have more info on the swap.
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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.
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