Hello, I just bought a motor to swap, the engine is a 1UZFE (1st gen), and I will install it in my 4Runner Limited 3.4 V6
From Copiapo, Atacama - Chile

I am creating this topic so that you can help me with opinions about this new proyect.

My 4R


My New Engine


My New Trans

If you know your way around wiring, reading wire schematics, and fluent in metal fabrication- you should be able to get it done.
If not, you may be over your head.
In for seeing cool swap progress


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@Singtoe already has a huge documented thread on this, use it to your advantage.

Good luck, some 1uz tips

-you can wire it up and by pass the trac and get it to run. Don't be afraid of that.
If your wiring skills are good, you can wire the trac motor that controls the butterfly, so that the butterfly acts as kill switch

Don't be worried about dialing in kick down cable until you have the motor running soild

If you plan to use the 1uz trans and convert to 4wd you need to change the output shaft and tail housing or buy the part from Marlin crawler which makes a pre runner adopter to use with out tearing into trans

There will be some clearance issues, body lift if you want to keep factory hood

Find yourself a set of 2uz log style exhaust manifolds. It will save you a ton of pain putting the motor in and pulling it. Might need to cut flange and clock it for clearance, you will definitely be pulling motor for this

Also there are slight difference between the sc400 and ls400 versions of the motor. Example is the oil filter mount, the sc400 is tighter to body and will provide more clearance also the sc400 air box is very close to the 4runners except the air duct opening is In front instead of off to the side and into the fender we'll like the 4runners. The air boxes use the same filter tho

Also if you have motor in transitional year late 94 early 95. Be prepared for the wiring schematic not to match factory service manuals due to obd2 transition.

Get yourself a extra mass air flow.

The harness is complete, no cuts or anything, but I need to know that transfer case is plug and play for my transmission AW 30-41LE

This week advance in the project, I completely removed the 5vz with the A340F, I will occupy the original transmission of the 1UZ (a341e) but I will install the output shaft of the original 4Runner (A340F) box, this week should have ready transmission Of the uz to present the engine and manufacture the supports to the chassis. Some photos

Looks good.

Fellow member @alanflies did the same swap in 2014:
1UZ-FE swap 99 SR5... well here goes nothin!

as did @Singtoe as mentioned.

it's a hell of a project. you would be the first one posting and doing it outside of the USA.

Sub'd. I love these swaps!

Some advances today, my transmission is ready. A341 with output shaft of A340F (Original of my ex 5VZ engine + its original transfer), arrived the new Wheels with Tires and the Transmission was installed. Here are some pictures.

Old Output Shaft



New Output shaft



Transmission A341F Installed (Aisin 30-41)




My New Wheels and Tires

Looking good!


Love these swaps!

Nice progress. Looking forward to the rest.

Ser Hello, I had not had time to make more progress, but now I show you the progress of the project, the engine is already stated by its own means. I am waiting for the new Engine and Transmission Mounts, new Denso Radiator, Adapter for the Flowmeter and Led Watches, here some photos.