JFavors

Hi, I am new to the forum. I've been trying to find my answer to this question on google for the past few days with no luck; I was hoping someone has had past experience or just the knowlegde I am lacking right now. Anyway. My truck has just been diagnosed with having a blown head gasket and was told that it's going to cost around $1600 dollars to fix. When I told a buddy of mine about this he mentioned something about buying a jdm engine and just swapping it with the old American one. Before I purchased the engine I wanted to know if you would have to buy something special to fit it or anything else that I should look at before doing so.. I drive a 1997 2WD Toyota 4runner with a 3.4L V6. Thankyou so much and sorry if this post has been somewhere else on the forum I just couldn't find it.

yotaman85

are you not capable of doing the work yourself? that would save you the most money and there is a billion how too and wald through threads on this site.. i have used JDM motors for civics with good resaults but thats it so i have no idea if they are a viable swap for your app.. good luck whatever you try to do!

JFavors

I just had back surgery and don't have the tools I was also hoping to just buy the JDM with the lower miles for a longer life. I am just not sure if the connectors would be different or anything like that.

Walts Mully

im currently looking at doing the same thing except i have a 3.0L petrol and i wanna get more power and my engine is ruined because i drove thru a SWAMP so im thinking 3.4L upgrade but then i sore this post and now im thinking supra motor upgrade like 7M,1JZ or 2JZ or even a 4.0, 4.3L or 4.7L 8 cyclinder. heaps of engines around especially on ebay but i wanna know whats gonna slap into my car without changing the whole thing and costing a arm and leg... i have about 6 grand to play with... and i wanna get my car on the road

motocrossaddict223

If you want to get a lower mileage one then i'd say go for it, it will tell you on the site, if not you can ask them, they have done the swap before.
Walts, there are a ton of threads on here on what engine swap is pretty much drop in for the 3.0, which is the 3.4. That being said, if you're driving through swamps try looking into a snorkel too

Greg_Canada

You will likely have to swap the oil pan and pickup, wiring harness, etc.
The sensors should be the same, but the harness wiring / ecu will be different, you will want to re-use your existing harness on the new engine. Should be a simple plug and play otherwise. The JDM engine might have EGR... you can block that off if yours doesn't.

Walts Mully

ok cheers guys, so where can i get all this stuff from that i need for my car, ENGINE, ECU harness and pan pickup etc... ? and how much would i be looking at. ohhh and a SNORKLE hehe

vital22re

iTrader: (2)

with "JDM" engines, you are just using the Long block. So just the heads with block. You reuse your intake manifold, exhaust, and all of your sensors/injectors/ harness/ ECU.

motocrossaddict223

Ohh see i didnt know that, the JDM motor i helped my buddy put in (300zx TT) came complete with harness and everything. We only had to change two sensors over from the jap motor to american versions.

vital22re

iTrader: (2)

Its easier to reseal everything while you're at it. Valve covers etc. One the 3.4 the exhaust manifolds are slightly different and the harness vary year to year. Sometimes you get a motor that has been sitting for a while so the injectors are stuck shut. Not a bad idea to send out your injectors to get professionally cleaned. Injectors are a different style from 98 on. California spec vehicles are different on thier own with sensors and wiring. So It can all vary.

KZN185W

iTrader: (1)

Are you planning to replace the USDM 5VZ-FE engine with a JDM 5VZ-FE engine? or is it from the USDM 5VZ-FE to the JDM 1KZ-TE/1KD-FTV TDI engines?

One of the differences will be the harness because the the JDM ECU is located on the left side so the JDM harness may be a bit shorter. Also, the wiring attached to the engine bay fusebox will be shorter because in the JDM unit, the fusebox is located on the right side.
Also, as previously posted, there are differences in the ECU/wiring from year to year.
You might like to refer to www.toyodiy.com for the part numbers.
It would also be better if you get the engine that comes with a tranny to make the replacemen simplier. But before installaing, replace the tranny shifter with the LHD version.

Now if you're plan is to go the TDI route, there is a sop in Texas, that will supply the engine and do the installation. I forgot the name of the shop but it's in this forum. Just search using 1KZ-TE engine swap.

Greg_Canada

Ok OK, he just wants a JDM 5vz-fe.

Use YOUR CURRENT harness and ECM, YOUR CURRENT oil pan and pickup and YOU SHOULD BE FINE. Keep all your sensors just in case the JDM ones don't work properly.