amp5

not sure on these forums but I have a 1990 4runner with a 3.0 and blown heads and a great body and frame. I have a 1995 t100 with low mileage motor and a rotton frame and body seems like an easy conversion does anybody have any reccomendations.

dropzone

iTrader: (6)

yes, read all the threads you can before turning a wrench
the conversion you are thinking off has been done a ton of times.
you are in an enviable situation having the complete donor vehicle.

amp5

it seemed having both trucks would make it easier the t100 has the oil pan needed and I am hoping to take pretty much all the the wiring

SacRunner

The T100 3.4 engine will bolt into your 1990 4Runner without any changes. When people are swapping oil pans, etc., they're trying to turn their 3.4 engine into a T100 (at least on the bottom end: oil pan, oil pickup, dip stick and dip stick guide).

What transmission is in each truck (4Runner and T100)? What's your goal transmission?

One "gotcha" that's different with the T100's 3.4 is the EVAP sensors are a part of the "body" harness, rather than the 95.5/96 Tacoma/4Runner which had them included in the engine harness, so if you live in an emissions controlled area, you'll need to figure out how to add these wires.

Wiring will be the biggest pain with this swap, your two options are to do it yourself or pay to have it done. To DIY, read everything you can here (like deathcougar said) then ask specific questions as they arise.

To pay to have it done, you have 2 choices (others may exist, but they're few and far between):
http://www.toyonlyswaps.com/conversion-wiring-.html
http://www.offroadsolutions.com/prod...2r-e-vehicles/

amp5

I am not sure which trans is in either I assumed the r150. I read somewhere that's what is in them. I will have to look at evap I do not think my T100 has much in the way of emissions. It is a 95 no ac 4x4 dx model its very plain. I do know it does not run well when the 02 sensors are messed with. I live in NY and our inspection only requires that 96 and newer pass emissions and check engine codes so my 1990 will be exempt. I don't pay anyone to do anything. I have done engine swaps in older chevys and fords with success. I had both trucks lined up next to each other yesterday and looks like everything will fit well. I am concerned about the exhaust a little I already bought a new crossover for the t100 and it looks like I can cut and paste some of the parts left over to get it out the back. I am looking forward to it its been in the works for a while. I am hoping to start in about three weeks as I am still driving the T100 everyday as rotton as it is. Nice to know that there is a lot of help out there too

amp5

I have finally begun my swap. I brought both trucks in the garage yesterday and got the hoods off. I should be ripping the blown 3.0 out one night this week after work. Then just pull the 3.4 and drop it in the runner.

Smaay

I just finished my swap into my 93 4runner from a 95 T100. what I did for wiring is took both harness' and opened them both up. I depinned both IH1 and IH2 and then re-pinned them to match the 5VZ ECU and 93 4runner body. I took the EVAP wiring off the 4runner harness and added it to the 5VZ. same with the transmission and O2 sensors. It really wasnt that difficult. Then I loomed everything up the way i wanted the wiring to go.

the crossover pipe is the hardest part. If you have a 4X4 then you need to re-design the crossover to go down the drivers side like your 4runner did. if its not a 4X4 then you might be ok.

amp5

I am hoping to fabricate my own crossover from the two trucks existing pipe. I am a bit weary about the wiring I am hoping to use most of the stock wiring from the t100 not sure how it will weave into the runners existing stuff yet. I assume I can take the harness and fuse panels. I am not sure yet how that will work. should find out this weekend

amp5

I finished pulling the engine out of the T100 last night. We pulled the blown 3.0 outta the runner last week. Both motors came out complete with the harnesses. I am using the Y pipe from the T100 with a crossover from ebay and the 3.0 crossover to build a new one and cutting and splicing in the section of exhaust that includes the rear o2 sensor. Gotta get a clutch while I am in there Not sure what to get 95 t100 clutch kit I am assuming. I only noticed that the two connectors to the body harness are different this Will be a challenge looks like maybe repinning like smaay said hoping to be ready to drop the motor this weekend but its deer season here so if I am not working and its light out I am hunting.

amp5

I have been poking around does anyone ever get both complete harnesses and computers I am looking for info on just changing the two body plugs by the ecm. Thanks

Smaay

Its really not that difficult. I have both the harness drawings, send me a PM and ill email them to you. once you de-pin and open up both harness', splicing them back together isnt too hard. I used mostly the T100 harness, and added the speed sensor, reverse and 4x4 sensors. the 2 gauge plugs just re-pin to match the 4runner

amp5

so I got the crossover welded and painted last night. I have been staring at the wiring and got hung up on that. Decided I will just push through with the mechanics of it and I will get to the wiring when I get to it. New clutch and exhaust gaskets and I will be dropping the 3.4. I am not sure I saved any money or got a better product than sending my crossover to one of the shops for fabrication but I can say I did it myself. I followed the advice I read on here cutting the flanges loose right at the welds was genius It made re welding much better. I used internal sleeves to adapt the flex to the other two ends and will be putting the heat shield back on tonight when the paint is dry.

cskysurfer

Hello, I have the following vehicle: 1992 Toyota SR5, 4 Runner, 6 cylinder, 3.0 L V6 (3VZ-E) engine. Instead of putting back in the same engine who has a history of blowing head gaskets, do you know of another engine I may replace it with?

00Tyler10

You are in the thread for that very thing man. 3.4 engine.

Smaay

please tell me you are going to clean that engine up and or refresh it before you install it

amp5

I will be doing some light cleaning on the engine. I will be putting in new clutch pressure plate and throwout bearing. This is not really a build more of a repair. I bought the 4runner 2 years ago as a daily driver the head failed last fall and it has been parked. I bought the T100 about a month after the runner as a beater for $300 from the original owner it had been sitting for 4 years ( it is possibly the rustiest truck I have ever worked on). I put new leaf springs brake lines and brakes all around ended up with about $1200 in it. It has been a faithful workhorse for two years but is about broken in half now. Which brings me to the swap since I had the busted runner and a one owner 3.4 with 102,000 on it. I thought about changing the manifolds but with the rust situation I am afraid I will be drilling and tapping new exhaust studs (not something I want to do). Long story longer I am hoping to get two to three more years outta the runner after the swap as a daily driver in the winter my only other steed is a two wheel drive 1990 s10 with a 4.3 v6. These New York winters destroy vehicles fast.

amp5

So after my last post I went outside to the garage to poke at the yotas as I unwrapped the tape from my harness I found this. I guess this is not the first motor swap the runner has seen. I was suspect all along. It has 325,000 plus miles. I found a paint pen marking on the tranny saying 89 toyota I thought just the trans had been done. Not much original left on this truck I re did the inside from a wrecked 94 shortly after I got it right down to the carpet inside.

amp5

I am looking for confirmation on the clutch parts I need. I am using 95 t100 engine and flywheel mated to 1989/1990 trans in the runner. From what I can find on the forums I need clutch for 3.4 but use a 1990 3.0 throwout/release bearing? Thanks for any advice

Smaay

use the throw out bearing for the transmission you are using. if you are using the original trans from your truck, then get that TOB

amp5

So I have going hard at the wiring this weekend. I have at least 80% of the harness built. Thanks to smaay for the help and ewds. I also printed a copy of themonch's pdf of connector and wiring theory. Thanks to all the other thread owners/starters that I took notes from. I have read a lot of them saying they wish there was one universal easy way. As everyone told me it isn't there they are all different. Donors, years, prior work, any number of things. I have a 1990 runner and I am not sure if it is a crossover year or if someone repinned stuff and cut connectors when they changed the motor. I have what appears to be a hybrid 88/89 n5 body harness connector coupled with a 90-96 IH1 connector not n3 and only half of the pinouts and wire colors in the ewds and other files match what I have. I have used a combination of others wisdom and pinout sheets, combined with ewds for both models when all else failed the meter (luckily I have both trucks side by side in the garage.Got some pics of wiring and my setup. Mostly I wanted thank all those that have posted and those who took time to help a bit more, to rant in a place where i would get some understanding and fore warn others performing the swap DO YOUR HOMEWORK.