Yeah, I race this thing on dirt.....

[CrankyOldMan]

Yes, technically the engine should bolt to the transmission (same bolt pattern on the C5X/C6X families) but the starter is sometimes in a different spot. There's a few under-documented 1ZZ swaps around somewhere, nothing with the level of detail that's been done on the 2ZR between ArmstrongRacing, Brushforhire, AtomicHoji, myself and a few others--apologies if I've forgotten anyone!

You actually need all of the mounts from an xD to make it work because the engine sits a little farther forward and lower than the 1NZ. I don't recall where the clearance issues are with the Yaris transmission mounts but I would assume it's the block and/or oil pan against the sub frame. There have been differing levels of success with mixing Yaris and xD mounts but not enough investigation has been done to understand why.

The wiring really is incredibly simple for the 2ZR because they use the same ECU connectors. The xD ECU plugs in to the Yaris main harness. Easy peasy, lemon squeezy. AFAIK the 1ZZs all use the older, beige, unsealed ECU connectors so even if you had the engine harness, you'd have to splice in the engine bay/dash connections. Difficult, difficult, lemon difficult. :)

The exhaust needs to be fabbed but you can use a 2ZR Corolla/Matrix/Vibe or xD header as the base and then plumb the rest yourself.

Radiator is the same but you need the xD fill neck and upper hose. Heater core hoses are probably not a concern for you.

Fuel hose from the hard line to the fuel rail should be swapped to the xD, might be able to get away with the Yaris.

I kept the Yaris axles and haven't had any issues in the last 5 years of daily driving and some AutoX/track stuff.

I think that's about it. It's been a few years since I've actively researched this stuff so it's getting a little fuzzy around the edges. I'm actively working on ArmstrongRacing's old Project 2ZR Vios track car, currently tackling the wire harnesses in an unnecessary and overly pedantic way. Basically trying to reduce the OEM harnesses to the absolute minimum necessary before embarking on a custom "club level" harness that eliminates the main body ECU/junction/fuse block, key switch and all the loose connectors from the engine bay components that are no longer present.

Either way, looking forward to seeing what you come up with!

[jonny77]

Originally Posted by CrankyOldMan

Yes, technically the engine should bolt to the transmission (same bolt pattern on the C5X/C6X families) but the starter is sometimes in a different spot. There's a few under-documented 1ZZ swaps around somewhere, nothing with the level of detail that's been done on the 2ZR between ArmstrongRacing, Brushforhire, AtomicHoji, myself and a few others--apologies if I've forgotten anyone!

You actually need all of the mounts from an xD to make it work because the engine sits a little farther forward and lower than the 1NZ. I don't recall where the clearance issues are with the Yaris transmission mounts but I would assume it's the block and/or oil pan against the sub frame. There have been differing levels of success with mixing Yaris and xD mounts but not enough investigation has been done to understand why.

The wiring really is incredibly simple for the 2ZR because they use the same ECU connectors. The xD ECU plugs in to the Yaris main harness. Easy peasy, lemon squeezy. AFAIK the 1ZZs all use the older, beige, unsealed ECU connectors so even if you had the engine harness, you'd have to splice in the engine bay/dash connections. Difficult, difficult, lemon difficult. :)

The exhaust needs to be fabbed but you can use a 2ZR Corolla/Matrix/Vibe or xD header as the base and then plumb the rest yourself.

Radiator is the same but you need the xD fill neck and upper hose. Heater core hoses are probably not a concern for you.

Fuel hose from the hard line to the fuel rail should be swapped to the xD, might be able to get away with the Yaris.

I kept the Yaris axles and haven't had any issues in the last 5 years of daily driving and some AutoX/track stuff.

I think that's about it. It's been a few years since I've actively researched this stuff so it's getting a little fuzzy around the edges. I'm actively working on ArmstrongRacing's old Project 2ZR Vios track car, currently tackling the wire harnesses in an unnecessary and overly pedantic way. Basically trying to reduce the OEM harnesses to the absolute minimum necessary before embarking on a custom "club level" harness that eliminates the main body ECU/junction/fuse block, key switch and all the loose connectors from the engine bay components that are no longer present.

Either way, looking forward to seeing what you come up with!

Wow, thanks for the treasure chest of information! I can't believe you wouldn't think I run the heater, lol, I left it hooked up in case I needed extra cooling because that radiator is a joke. What I really should've done is left the AC lines on it since the compressor is still on the motor. I could have fed a duct to my helmet to keep from fogging my glasses waiting in the staging area....